Publication / Peer Review Articles

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Dynamics of the Asymmetric Geospace / 2023

Oliveira, D.M, Welling, D.T., Kim, H., Gabielse, C.E., Reistad, J.P., and Laundal, K. (2023) Editorial: Understanding the causes of asymmetries in Earth’s magnetosphere-ionosphere system, Front. Astron. Space Sci.,

Zhang, Q.-H. Zhang, K. Oksavik, T. Xu, Z.-Y. Xing, L. R. Lyons, D.-S. Han, H.-B. Zhang, Y.-Z. Ma, Z.-J. Hu, J.-J. Liu, Y. Wang, and X.-Y. Wang (2023), Do the Throat Auroras Create Polar Cap Patches?, Geophys. Res. Ltrs. 50,

X.-Y. Wang, Q.-H. Zhang, C. Wang, Y.-L. Zhang, B.-B. Tang, Z.-Y. Xing, K. Oksavik, L. R. Lyons, M. Lockwood, Q.-G. Zong, G.-J. Li, J. Liu, Y.-Z. Ma, and Y. Wang (2023), Unusual shrinkage and reshaping of Earth's magnetosphere under a strong northward interplanetary magnetic field, Nature Commun. Earth & Environ., 4, 31,

Y.-Z. Ma, Q.-H. Zhang, L. Lyons, K. Oksavik, Z.-Y. Xing, M. Hairston, B. Nanan, Z.-J. Hu, Y. Wang, and S.-H. Zhao (2023), A comparative study on the hot dense plasma and cold patch by using multi-instrument observations, J. Geophys. Res.: Space Physics, 128,

M. Lessard, A. Damsell, F. B. Sadler, K. Oksavik, and L. Clausen (2023), Interhemispheric Asymmetries of Neutral Upwelling and Ion Upflow, Front. Astron. Space Sci., 10:1151016, doi:10.3389/fspas.2023.1151016, 2023  

Hard Radiation from Thunderstorms / 2023

D. Li, A. Luque, F. J. Gordillo-Vazquez, F. J. Perez-Invernon, L. Skanning Husbjerg, T. Neubert, O. Chanrion, G. Lu, H. Zhang, J. Han, N. G. Lehtinen, N. Østgaard, V. Reglero (2023) Different types of corona discharges associated with high-altitude positive Narrow Bipolar Events nearby cloud top, J. Geophys. Res.,, Jan 2023

D. SarriaN. ØstgaardM. MarisaldiN. LehtinenA. Mezentsev (2023), Library of Simulated Gamma-Ray Glows and Application to Previous Airborne Observations, J. Geophys. Res. – Atmospheres,

A. Mezentsev, A. P. Nickolaenko, A. V.  Shvets, Yu. P. Galuk, A. Yu. Schekotov, M. Hayakawa, R. Romero, J. Izutsu, and I. G. Kudintseva (2023), Observational and Model Impact of Tonga Volcano Eruption on Schumann Resonance, J. Geophys. Res. – Atmospheres,

A. Mezentsev, R. Romero, R. De Rosa, I.G. Kudintseva (2023), Power flux in the Schumann resonance band linked to the eruption of Tonga volcano on Jan. 15, 2022, (Two point measurements of Umov-Poynting vector), A.P. Nickolaenko, A.V. Shvets, Yu.P. Galuk, A. Yu. Schekotov, M. Hayakawa, J. Atmos. Solar-Terrest. Phys.,

X. Bai, M. Fullekrug, O. Chanrion, S. Soula, A. Peverell, D. Mashao, M. Kosch, T. Neubert, N. Østgaard, V. Reglero (2013), Height Determination of a Blue Discharge Observed by ASIM/MMIA on the International Space Station, J. Geophys. Res., doi: 10.1029/2022JD037460

Particle Precipitation / 2023

Salice, J. A.Nesse, H.Babu, E. M.Smith-Johnsen, C., and Richardson, I. G. (2023), Exploring the predictability of the high-energy tail of MEE precipitation based on solar wind properties,  J. Geophys. Res.: Space Physics,

Øvretvedt, J. E., Maliniemi V. and Nesse H. (2023), Effects of Energetic Particle Precipitation on stratospheric temperature during disturbed Stratospheric Polar Vortex conditions, Accepted in J. Geophys. Res.: Atmospheres

Nowada, M., Miyashita, Y., Partamies, N., Degeling, A. W., and Shi, Q.-Q. (2023), Auroral morphological changes to the formation of auroral spiral during the late substorm recovery phase: Polar UVI and ground all-sky camera observations, J. Geophys. Res., 128, e2023JA031400,

Kallio, E., Harri, A.M., Knuuttila, O., Alho, A., Järvinen, R., Kauristie, K., Kestilä, A., Kivekäs, J., Koskimaa, P., Lukkari, J.-M., Partamies, N., Rynö, J., and Syrjäsuo, M. (2023),  Auroral imaging with combined Suomi 100 nanosatellite and ground-based observations: A case study, J. Geophys. Res., 128,

Goertz, A., Partamies, N., Whiter, D., and Baddeley, L. (2023), Morphological evolution and spatial profile changes of poleward moving auroral forms, Annales Geophysicae, 41, 115–128,

Whiter, D. K., Partamies, N., Gustavsson, B., and Kauristie, K. (2023), The altitude of green OI (557.7 nm) and blue N+2 (427.8 nm) aurora, Annales Geophysicae, 41, 1--12,

Wüst, S., Bittner, M., Espy, P.J., French, W.J.R, Mulligan, F.J. (2023), Hydroxyl airglow observations for investigating atmospheric dynamics: results and challenges, Atmos. Chem. Phys. 23, 1599–1618,

Sato, K., Y. Tomikawa, M. Kohma, ..., P.J., Espy,  et al. (2023), Interhemispheric Coupling Study by Observations and Modelling (ICSOM). J. Geophys. Res.: Atmospheres, 128, e2022JD038249,

Vorobeva, E., J. Assink, P.J. Espy, T. Renkwitz, I. Chunchuzov, S.P. Näsholm (2023), Probing gravity waves in the middle atmosphere using infrasound from explosions, J. Geophys. Res.: Atmospheres, 128, e2023JD038725,

Esplin, R., ... P. Espy, et al. (SABER Team), Sounding of the Atmosphere using Broadband Emission Radiometry (SABER): Instrument and Science Measurement Description, Earth and Space Science,

van Caspel, W.E., P. Espy, R. Hibbins, G. Stober, P. Brown, C. Jacobi, J. Kero, E. Belova, A case study of the solar and lunar semidiurnal tide response to the 2013 major sudden stratospheric warming event, J. Geophys. Res.: Atmospheres,


Dynamics of the Asymmetric Geospace / 2022

R. Elhawary, K.M. Laundal, J.P. Reistad, S.M. Hatch (2022) Possible Ionospheric Influence on Substorm Onset Location, Geophys. Res. Ltrs.,

D. Zhang, Q.-H. Zhang, Y.-Z. Ma, K. Oksavik, L.R. Lyons, Z.-Y. Xing, M. Hairston, Z.-X. Deng, and J.-J. Liu (2022), The Dependence of Cold and Hot Patches on Local Plasma Transport and Particle Precipitation in Northern Hemisphere Winter, Geophys. Res. Ltrs.,

A. Spicher, J. LaBelle, J. W. Bonnell, R. Roglans, C. Moser, S. A. Fuselier, S. Bounds, L. B. N. Clausen, F. Di Mare, C. A. Feltman, Y. Jin, C. Kletzing, W. J. Miloch, J. I. Moen, K. Oksavik, R. Sawyer, T. Takahashi, and T. K. Yeoman (2022), Interferometric study of ionospheric plasma irregularities in regions of phase scintillations and HF backscatter, Geophys. Res. Ltrs.,

K. M. LaundalJ. P. ReistadS. M. HatchM. MadelaireS. WalkerA. Ø. HovlandA. OhmaV. G. MerkinK. A. Sorathia (2022), Local mapping of polar ionospheric electrodynamics, J. Geophys. Res.: Space

H. Zhang, Q. Zong, H. Connor, P. Delamere, G. Facskó, D. Han, H. Hasegawa, E. Kallio, Á. Kis, G. Le, B. Lembège, Y. Lin, T. Liu, K. Oksavik, et al. (2022), Dayside Transient Phenomena and Their Impact on the Magnetosphere and Ionosphere, Space Science Reviews, 218, 40,

Laundal, K.M,. Madelaire, M., Ohma, A., Reistad, J. and Hatch, S. (2022), The relationship between interhemispheric asymmetries in polar ionospheric convection and the magnetic field line footpoint displacement field, Front. Astron. Space Sci. 9:957223,

M. Madelaire, K. Laundal, J. Reistad, S. Hatch, A. Ohma and S. Haaland (2022), Geomagnetic Response to Rapid Increases in Solar Wind Dynamic Pressure: Event Detection and Large Scale Response, Frontiers,  

M. Madelaire, K. Laundal, J. Reistad, S. Hatch, A. Ohma (2022), Transient high latitude geomagnetic response to rapid increases in solar wind dynamic pressure, Frontiers,

J. P. Reistad, L. Holappa, A. Ohma, C. Gabrielse, D. Sur, T. Asikainen and A.DeJong (2022), Dependence of the global dayside reconnection rate on IMF By and the Earth’s dipole tilt, Frontiers, accepted

Bower, G. E., S. E. Milan, L. J. Paxton, and S. M. Imber (2022), Transpolar arcs: Seasonal dependence identified by an automated detection algorithm, J. Geophys. Res. Space Physics,

Bower, G. E., S. E. Milan, L. J. Paxton, and B. J. Anderson (2022), Occurrence statistics of horse collar aurora, J. Geophys. Res. Space Physics,

Sangha, H. K., S. E. Milan, B. J. Anderson, and H. Korth (2022), Statistical Analysis of Bifurcating Region 2 Field-Aligned Currents Using AMPERE, Front. Astron. Space Sci.,

Milan, S. E., J. A. Carter, G. E. Bower, A. Fleetham, and B. J. Anderson (2022), Influence of off-Sun-Earth line distance on the accuracy of solar wind monitoring, J. Geophys. Res. Space Physics,

Milan, S. E., J. A. Carter, G. E. Bower, B. J. Anderson, and L. J. Paxton (2022), Lobe reconnection and cusp-aligned arcs, J. Geophys. Res. Space Physics,

Hatch, S.M., Laundal,  K.M. and Reistad,  J.P. (2022), Testing the mirror symmetry of Birkeland and ionospheric currents with respect to magnetic latitude, dipole tilt angle, and IMF By, Front. Astron. Space Sci. 9:958977,    

Ohma, A., Laundal, K.M., Reistad,  J.P. and Østgaard, N. (2022), Evolution of IMF By induced asymmetries during substorms: Superposed epoch analysis at geosynchronous orbit, Front. Astron. Space Sci. 9:958749,  

Alfonsi, L., Bergeot, N., Cilliers, P., De Francaschi, G., Baddeley, L. ... Partamies, N. et al. (2022) Review of Environmental Monitoring by Means of Radio Waves in the Polar Regions: From Atmosphere to Geospace, Surv Geophys,

Nosikova, N. S, N.Yagova, L. J. Baddeley, D. Lorentzen, and D. Sormakov (2022), An investigation into the spectral parameters of ultra-low-frequency (ULF) waves in the polar caps and magnetotail, Ann.

Schillings, A., Palin, L., Opgenoorth, H.J., Hamrin, M., Rosenqvist, L., Gjerloev, J.W., Juusola, L. and Barnes, R. (2022), Distribution and Occurrence Frequency of dB/dt Spikes During Magnetic Storms 1980–2020, Space Weather,

Y. Zheng, C. Xiong, Y. Jin, D. Liu, K. Oksavik, C. Xu, Y. Zhu, S. Gao, F. Wang, H. Wang, and F. Yin (2022), The refractive and diffractive contributions to GPS signal scintillation at high latitude during the geomagnetic storm on 7-8 September 2017, J. Space Weather Space Clim.,

K. Herlingshaw, L. Baddeley, K. Oksavik, D. Lorentzen, and K. Laundal (2022), A Statistical Study of Polar Cap Flow Channels observed in Both Hemispheres using SuperDARN Radars, J. Space Weather Space Clim.,

S. Lu, Z.-Y. Xing, Q.-H. Zhang, Y.-L. Zhang, Y.-Z. Ma, X.-Y. Wang, K. Oksavik, L. R. Lyons, B. Nanan, J. Liu, Y. Wang, Z.-X. Deng, K. Xia, and D. Song (2022), A statistical study of space hurricanes in the Northern Hemisphere, Front. Astron. Space Sci., 9:1047982,

Hard Radiation from Thunderstorms / 2022

M.J. Peterson, T. J. Lang, T. Logan, C.W. Kiong, M. Gijben, R. Holle, I.Kolmasova, M. Marisaldi, et al., (2022) New WMO Certified Megaflash Lightning Extremes for Flash Distance (768 km) and Duration (17.01 seconds) Recorded from Space, Bull. Amer. Meteor. Soc.,

A. Ursi, M. Romani, F. Verrecchia, C. Pittori, M. Tavani, M. Marisaldi, et al. (2022), The Second AGILE MCAL Gamma-Ray Burst Catalog: 13 yr of Observations,  Astrophys. J.,

A. Lindanger, C. A. Skeie, M. Marisaldi, I. Bjørge-Engeland, N. Østgaard, A. Mezentsev, D. Sarria, N. Lehtinen, V. Reglero, O. Chanrion, T. Neubert (2022), Production of Terrestrial Gamma-ray Flashes During the Early Stages of Lightning Flashes, J. Geophys. Res.: Atmospheres,

A. Schmalzried, A. Luque and N. Lehtinen (2022), Enhancing higher-energy spectral resolution for electron particle simulations in air, Computer Phys. Communications,

Bjørge-Engeland, I., Østgaard, N., Mezentsev, A., Skeie, C. A., Sarria, D., Lapierre, J., et al. (2022), Terrestrial Gamma-ray Flashes with accompanying Elves detected by ASIM, J. Geophys. Res.: Atmospheres,

K. Dimitriadou, O. Chanrion, T.  Neubert, A. Protat, V.  Louf, M.  Heumesser, L. Husbjerg, C.  Köhn, N. Østgaard, V. Reglero (2022), Analysis of Blue Corona Discharges at the Top of Tropical Thunderstorm Clouds in Different Phases of Convection, Geophy. Res. Ltrs.,

L. S. Husbjerg, T.  Neubert, O. Chanrion, K. Dimitriadou, D. Li, M.  Stendel, E.  Kaas, N. Østgaard, V. Reglero (2022), Observations of Blue Corona Discharges in Thunderclouds, Geophys. Phys. Ltrs.,

A. Ursi, M. Romani, G. Piano, ... M. Marisaldi, et al. (2022), AGILE Observations of GRB 220101A: A "New Year's Burst" with an Exceptionally Huge Energy Release, Astrophys. J.,

D. Li, A. Luque, N. G. Lehtinen, F.J. Gordillo-Vazquez, T. Neubert, G. Lu, O. Chanrion, H. Zhang, N. Østgaard, V. Reglero (2022), Multi-pulse corona discharges in thunderclouds observed in optical and radio bands, Geophys. Res. Lett.,

S. Soler, F. J. Gordillo-Vazquez, F. J. Perez-Invernon, A. Luque, D. Li, T. Neubert, O. Chanrion, V. Reglero, J. Navarro-Gonzalea, N. Østgaard (2022) Global distribution of key features of streamer corona discharges (BLUEs) in thunderclouds, J. Geophys. Res.,

A. Schmalzried, A. Luque, and N. Lehtinen (2022), Combined molecular and atomic potentials for elastic cross sections of electrons scattering off diatomic molecules at intermediate energies, Phys. Rev. A.,

C. A. Skeie, N. Østgaard, A. Mezentsev, I. Bjørge-Engeland, M. Marisaldi, N. Lehtinen, V. Reglero, T. Neubert (2022) The temporal relationship between Terrestrial Gamma-ray flashes and associated optical pulses from lightning, J. Geophys. Res., doi: 10.1029/2022JD037128

A. Huang, S. Cummer, Y. Pu, O. Chanrion, T. Neubert, V. Reglero, and N. Østgaard (2022) Transition in Optical and Radio Features during the Early Development of Negative Intracloud Leader, Geophys. Res. Lett.,  

A. Huang, S. Cummer, Y. Pu, O. Chanrion,T. Neubert, V. Reglero N. Østgaard (2022) Transition in Optical and Radio Features during the Early Development of Negative Intracloud Leader, Geophys. Res. Lett., doi: 10.1029/2022GL100594

D. Caballero-García, R. Gupta, S. B. Pandey, S. R. Oates, M. Marisaldi, A. Ramsli, et al., (2022) Multi-wavelength analysis of the luminous GRB 210619B observed with Fermi and ASIM, Monthly Notices of the Royal Astronomical Society – accepted  

Coleman, ...., M. Marisaldi, et al., (2022) Ultra-high-energy cosmic rays The intersection of the Cosmic and Energy Frontiers, Astroparticle Physics  

Particle Precipitation / 2022

Tesema, F., Partamies, N., Whiter, D.K., and Ogawa, Y. (2022) Types of pulsating aurora: comparison of model and EISCAT electron density observations, Ann. Geophys.,

W.E. van Caspel, P.J. Espy, D.A. Ortland, R.E. Hibbins (2022) The mid- to high-latitude migrating semidiurnal tide: Results from a mechanistic tide model and SuperDARN observations, J. Geophys. Res. Atmos.,

Smith-Johnsen, C.Marsh, D. R.Smith, A. K.Tyssøy, H. N., & Maliniemi, V. (2022), Mesospheric nitric oxide transport in WACCM, J. Geophys. R.: Space Physics,  

Edvartsen J., Maliniemi V., Nesse Tyssøy H., Asikainen T., and Hatch S. (2022), The Mansurov effect: Statistical significance and the role of autocorrelation, J. Space Weather Space Clim.,    

V. Maliniemi, P. Arsenovic, A. Seppälä, and H. N. Tyssøy (2022), Influence of energetic particle precipitation on Antarctic stratospheric chlorine and ozone over the 20th century, Atmos. Chem. Phys.,

Partamies, N., Tesema, F. and Bland, E. (2022), Appearance and Precipitation Characteristics of High-Latitude Pulsating Aurora, Front. Astron. Space Sci. 9:923396, 

Bland, E., Bozóki, T., and Partamies, N. (2022), Spatial extent of the energetic electron precipitation region during substorms, Front. Astron. Space. Sci.,

van Hazendonk, C. M., Heino, E., Jiggens, P. T. A., Taylor, M. G. G. T., Partamies, N., and  Mulders, H. J. C. (2022), Cutoff latitudes of solar proton events measured by GPS satellites, J. Geophys. Res.: Space Phys.,

Zúñiga López, H. D., Nesse Tyssøy, H., Smith-Johnsen, C., and Maliniemi, V. (2022), The direct effect of medium energy electron precipitation on mesospheric dynamics during a sudden stratospheric warming event in 2010, Geophys. Res. Ltr.,

N. Partamies, D. Whiter, K. Kauristie, and S. Massetti (2022), Magnetic local time (MLT) dependence of auroral peak emission height and morphology, Ann. Geophys.,  

Emmert, J. T., Jones, M. Jr., Siskind, D. E., Drob, D. P., Picone, J. M., Stevens, M. H., Bailey, S. M., Bender, S., Bernath, P. F., Funke, B, Hervig, M. E., and Pérot, K. (2022), NRLMSIS 2.1: An empirical model of nitric oxide incorporated into MSIS, J. Geophysical Res.: Space Physics,

Borovsky, J.E. and N. Partamies (2022), What produces and what controls the spatial-temporal structuring of the magnetospheric chorus waves that create the pulsating aurora: An unsolved problem in need of new measurements, Front. Astron. Space Sci.,

E. M. Babu, H. Nesse Tyssøy, C. Smith-Johnsen, V. Maliniemi, J. A. Salice, R. M. Millan, I. G. Richardson (2022), Determining Latitudinal Extent of Energetic Electron Precipitation Using MEPED On-Board NOAA/POES, JGR: Space Physics,  


Dynamics of the Asymmetric Geospace / 2021

S. Ohtani, S. Imajo, A. Nakamizo, J.W. Gjerloev (2021) Globally Correlated Ground Magnetic Disturbances During Substorms, J. Geophys. Res.: Space Phys.,

Orr, L., Chapman, S.C., Gjerloev, J.W., Guo, W. (2021) Network community structure of substorms using SuperMAG magnetometers, Nature Communications, 12, 1842 (2021),

Wang, Y., Z. Cao, Z.-Y. Xing, Q.-H. Zhang, P. T. Jayachandran, K. Oksavik, N. Balan, and K. Shiokawa (2021), GPS scintillations and TEC variations in association with a polar cap arc, J. Geophys. Res. Space Physics, 126,

Zhang, Q.-H., Y.-L. Zhang, C. Wang, K. Oksavik, L. R. Lyons, M. Lockwood, H.-G. Yang, B.-B. Tang, J. I. Moen, Z.-Y. Xing, Y.-Z. Ma, X.-Y. Wang, Y.-F. Ning, and L.-D. Xia (2021), A space hurricane over the Earth's polar ionosphere, Nature Communications, 12, 1207,

Moser, C., J. LaBelle, S. Hatch, J. I. Moen, A. Spicher, T. Takahashi, C.A. Kletzing, S. Bounds, K. Oksavik, F. Sigernes, and T. K. Yeoman (2021), The cusp as a VLF saucer source: First rocket observations of long-duration VLF saucers on the dayside, Geophys. Res. Lett., 48,

K. M. Laundal, J. H. Yee, V. G. Merkin, J. W. Gjerloev, H. Vanhamäki, J. P. Reistad, M. Madelaire, K. Sorathia, P. J. Espy (2021), Electrojet Estimates From Mesospheric Magnetic Field Measurements, J. Geophys. Res.: Space Physics,

L. Norenius, M. Hamrin, O. Goncharov, H. Gunnell, H. Opgenoorth, T. Pitkänen, S. Chong, N. Partamies, L. Baddeley (2021) Ground-Based Magnetometer Response to Impacting Magnetosheath Jets, J. Geophys. Res.: Space Phys.,

Paschmann, J. M. Quinn, R. B. Torbert, C. E. McIlwain, H. Vaith, S. Haaland, H. Matsui, C. A. Kletzing, W. Baumjohann, G. Haerendel (2021), Results of the Electron Drift Instrument on Cluster, J. Geophys. Res.: Space Phys.,

Haaland, B. Lybekk, L. Maes, K. M. Laundal, A. Pedersen, P. Tenfjord, A. Ohma, N. Østgaard, J. Reistad, K. Snekvik (2021), "Ion Outflow and Lobe Density", Interhemispheric Asymmetries, Ch. 7,

A. Fuselier, S. Haaland, et al. (2021), High-Density Magnetospheric He+ at the Dayside Magnetopause and Its Effect on Magnetic Reconnection, J. Geophys. Res.: Space Phys.,

Li, S. Haaland, Y. Wei (2021), A New Concept to Measure the Ambipolar Electric Field Driving Ionospheric Outflow, J. Geophys. Res.: Space Phys.,

Haaland, P.W. Daly, E. Vilenius (2021), Heavy Metal and Rock in Space: Cluster RAPID Observations of Fe and Si, J. Geophys. Res.: Space Phys.,

D. Billett, G. W. Perry, L. B. N. Clausen, W. E. Archer, K. A. McWilliams, S. Haaland, J. P. Reistad, et al. (2021), The Relationship Between Large Scale Thermospheric Density Enhancements and the Spatial Distribution of Poynting Flux, J. Geophys. Res.: Space Phys.,

Toledo-Redondo, M. André, N. Aunai, C. R. Chappell, J. Dargent, S. A. Fuselier, A. Glocer, D. B. Graham, S. Haaland, et al. (2021), Impacts of ionospheric ions on magnetic reconnection and Earth's magnetosphere dynamics, Revs. of Geophys.,

Ohtani, S., Gjerloev, J.W., et al. (2021), Simultaneous Development of Multiple Auroral Substorms: Double Auroral Bulge Formation, J. Geophys. Res.: Space Phys.,

M. McGranaghan, J. Ziegler, T. Bloch, S. M. Hatch, E. Camporeale, K. A. Lynch, M. Owens, J. Gjerloev, B. Zhang, S. Skone (2021), Toward a Next Generation Particle Precipitation Model: Mesoscale Prediction Through Machine Learning (a Case Study and Framework for Progress),Space Weather,

Milan, S. E., Carter, J. A., Sangha, H., Bower, G. E., & Anderson, B. J. (2021), Magnetospheric flux throughput in the Dungey cycle: Identification of convection state during 2010, J. Geophys. Res.: Space Phys.,

Milan, S. E. and A. Grocott (2021), High latitude ionospheric convection, in Space Physics and Aeronomy Collection Volume 3: Ionosphere Dynamics and Applications, Geophysical Monograph Series, eds. C. Huang and G. Lu,

Ohma, A.Reistad, J. P., and Hatch, S. M. (2021), Modulation of magnetospheric substorm frequency: Dipole tilt and IMF By effects,  J. Geophys. Res.: Space Physics,

Ohma, A., Østgaard, N., Laundal, K. M., Reistad, J. P., Hatch, S. M., Tenfjord, P. (2021), Evolution of IMF By induced asymmetries: The role of tail reconnection, J. Geophys. Res.: Space Physics, doi: 10.1029/2021JA029577

G. Branduardi-Raymont, M. Berthomier, Y. V. Bogdanova, .... K. M. Laundal, M. Lester, S. Milan, K. Oksavik, N. Østgaard, et al. (2021) Exploring Solar-Terrestrial Interactions via Multiple Imaging Observers, Exp. Astron.,

M.J. Engebretson, L.Y. Ahmed, V.A. Pilipenko, E.S. Steinmetz, M.B. Moldwin, M.G. Connors, D.H. Boteler, ... J. Gjerloev, C.T. Russell (2021) Superposed Epoch Analysis of Nighttime Magnetic Perturbation Events Observed in Arctic Canada, J. Geophys. Res.: Space Phys,

S. Haaland, H. Hasegawa, G. Paschmann, B. Sonnerup, M. Dunlop (2021), 20 Years of Cluster Observations: The Magnetopause, J. Geophys. Res.: Space Phys.,

D. Zhang, Q.-H. Zhang, Y.-Z. Ma, K. Oksavik, L. R. Lyons, Y.-L. Zhang, B. Nanan, Z.-Y. Xing, J. Liu, M. Hairston, and X.-Y. Wang (2021), Solar and geomagnetic activity impact on occurrence and spatial size of cold and hot polar cap patches, Geophys. Res. Lett., 48,

P.G. Ellingsen, D. Lorentzen, D. Kenward, J.H. Hecht, J.S. Evans, F. Sigernes, M. Lessard (2021) Observations of sunlit N2+ aurora at high altitudes during the RENU2 flight, Ann. Geo.,

M.N. Pedersen, H. Vanhamäki, A.T. Aikio, S. Käki, A.B. Workayehu, C.L. Waters, J.W. Gjerloev (2021) Field-aligned and ionospheric currents by AMPERE and SuperMAG during HSS/SIR-driven storms, J. Geophys. Res.: Space Phys.,

K. Li, . Andre, A. Eriksson, Y. Wei, J. Cui and S. Haaland (2021), High-latitude cold ion outflow inferred from the Cluster wake observations in the magnetotail lobes and the polar cap region, Front. Phys., doi: 10.3389/fphy.2021.743316

Paschmann, G., Sonnerup, B. U. Ö., Phan, T., Fuselier, S. A., Haaland, S., Denton, R. E., Burch, J. L., Trattner, K. J., Giles, B. L., Gershman, D. J., Cohen, I. J., Russell, C. T. (2021) Anomalous Reconnection Layer at Earth's Dayside Magnetopause, J. Geophys. Res., doi:10.1029/2021JA029678

Retino, A, Khotyaintsev, Y, ... (many aithors) Haaland S. et al. (2021) Particle Energization in Space Plasmas: Towards a Multi-Point, Multi-Scale Plasma Observatory, Earth Space Sci. Open Arch., doi:10.1002/essoar.10508140.1

L. Holappa, J.P. Reistad, A. Ohma, C. Gabrielse, D. Sur (2021) The Magnitude of IMF By Influences the Magnetotail Response to Solar Wind Forcing, J. Geophys. Res.: Space

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Hard Radiation from Thunderstorms / 2021

M. Heumesser, O. Chanrion, T. Neubert, H. J. Christian, K. Dimitriadou, F. J. Gordillo-Vazquez, A. Luque, F. Javier Pérez-Invernón, R. J. Blakeslee, N. Østgaard, et al. (2021), Spectral Observations of Optical Emissions Associated With Terrestrial Gamma-Ray Flashes, Geophys. Res. Ltr.,

N. Østgaard, S. A. Cummer, A. Mezentsev, A. Luque, J. Dwyer, T. Neubert, V. Reglero, M. Marisaldi, P. Kochkin, D. Sarria, N. Lehtinen, K. Ullaland, S. Yang, G. Genov, O. Chanrion, F. Christiansen, Y. Pu (2021), Simultaneous observations of EIP, TGF, Elve and optical lightning, J. Geophys. Res.: Atmospheres,

J. Montanya, J. A. Lopez, C. A. Morales Rodriguez, O. A. van der Velde, F. Fabro, N. Pineda, J. Navarro-Gonzales, V. Reglero, T. Neubert, O. Chanrion, S. J. Goodman, N. Østgaard, A. Ladino-Ricon, D. Romero, G. Sola, R. Horta, M. Freijo (2021), A simultaneous observation of lightning by ASIM, Columbia-Lightning Mapping Array, GLM and ISS-LIS, J. Geophys. Res.: Atmospheres,

T. Neubert, O. Chanrion, M. Heumesser, K. Dimitriadou, L. Husbjerg, I. Lindgaard Rasmussen, N. Østgaard, V. Reglero (2021), Observation of the onset of a blue jet into the stratosphere, Nature, 589, 371-375 ,

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A. Tiberia, F. Porcú, M. Marisaldi, M. Tavani, J. Lapierre, A. Ursi, F. Fuschino, L.P. D’Adderio,  S. Dietrich (2021), GPM‐DPR observations on TGFs producing storms, J. Geophys. Res.: Atmospheres,

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D. Sarria , N. Østgaard, P. Kochkin, N. Lehtinen, A. Mezentsev, M. Marisaldi, A. Lindanger, C. Maiorana, B. Carlson, T. Neubert, V. Reglero, K. Ullaland, S. Yang, G. Genov, B. Qureshi, C. Budtz-Jørgensen, I. Kuvetli, F. Christiansen, O. Chanrion, J. Navarro-Gonzalez, C. Eyles (2021), Constraining spectral models of a terrestrial gamma-ray flash from a terrestrial electron beam observation by the Atmosphere-Space Interactions Monitor, Geophys. Res. Lett.,

Li, A. Luque, F. J. Gordillo-Vazquez, F. Liu, G. Lu, T. Neubert, O. Chanrion, B. Zhu, N. Østgaard, V. Reglero (2021), Blue Flashes as Counterparts to Narrow Bipolar Events: the Optical Signal of Shallow In-Cloud Discharges, J. Geophys. Res.: Atmospheres,

C. Maiorana, M. Marisaldi, M. Füllekrug, S. Soula, J. Lapierre, A. Mezentsev, C. A. Skeie, M. Heumesser, O. Chanrion, N. Østgaard, T. Neubert, V. Reglero (2021), Observation of Terrestrial Gamma-ray Flashes at Mid Latitude, J. Geophys. Res.: Atmosperes,

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S. Soler, F. J. Gordillo-Vazquez, F. J. Perez-Invernon, A. Luque, D. Li, T. Neubert, O. Chanrion, V. Riglero, J. Navarro-Gonzalea, N. Østgaard (2021) Global frequency and geographical distribution of nighttime streamer corona discharges (BLUEs) in thunderclouds, Geophys. Res. Lett., 10.1029/2021GL094657

F. Liu , G. Lu, T. Neubert, J. Lei, O. Chanrion, N. Østgaard, A. Luque, F. J. Gordillo-Vazquez, W. Lyu, B. Zhu (2021) Optical emissions associated with narrow bipolar events in radio signals from thunderstorm clouds penetrating into the stratosphere, Nature Communication,

A. Lindanger, M. Marisaldi, D. Sarria, N. Østgaard, N. Lehtinen, C. A. Skeie, A. Mezentsev, P. Kochkin, K. Ullaland, S. Yang, G. Genov, B. E. Carlson, C. Kohn, J. Navarro-Gonzalez, P. Connell, V. Reglero, T. Neubert (2021) Spectral Analysis of Individual Terrestrial Gamma-ray Flashes Detected by ASIM, J. Geophys. Res, 10.1029/2021JD035347

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A. J. Castro-Tirado, N. Østgaard, E. Gogus, C. Sanchez-Gil, J. Pascual-Granado, V. Reglero, A. Mezentsev, M. Gabler, M. Marisaldi, T. Neubert, C. Budtz-Jørgensen, A. Lindanger, D. Sarria, I. Kuvvetli, P. Cerda-Duran, J. Navarro-Gonzalez, J. A. Font, B. -B. Zhang, N. Lund, C. A. Oxborrow, S. Brandt, M. D. Caballero-Garcia, I. M. Carrasco-Garcia, A. Castellon, M. A. Castro Tirado, F. Christiansen, C. J. Eyles, E. Fernandez-Garcia, G. Genov, S. Guziy, Y. -D. Hu, A. Nicuesa Guelbenzu, S. B. Pandey, Z. -K. Peng, C. Perez del Pulgar, A. J. Reina Terol, E. Rodriguez, R. Sanchez-Ramirez, T. Sun, K. Ullaland, S. Yang (2021) Very-high-frequency oscillations in the main peak of a magnetar giant flare, Nature,    

Particle Precipitation / 2021

D.K. Whiter, H. Sundberg, B.S. Lanchester, J. Dreyer, N. Partamies, et al. (2021), Fine-scale dynamics of fragmented aurora-like emissions, Ann. Geo.,

Partamies, N., Tesema, F., Bland, E., Heino, E., Nesse Tyssøy, H., and Kallelid, E. (2021), Electron precipitation characteristics during isolated, compound, and multi-night substorm events, Ann. Geophys., 39, 69–83,

Bland, E., Tesema, F., and Partamies, N. (2021), D-region impact area of energetic electron precipitation during pulsating aurora, Ann. Geophys., 39, 135–149,

J. Zhang, V. Limpasuvan, Y.J. Orsolini, P.J. Espy, R.E. Hibbins (2021), Climatological westward-propagating semidiurnal tides and their composite response to sudden stratospheric warmings in SuperDARN and SD-WACCM-X, J. Geophys. Res. Atmos.,126,

G. Liu, R.S. Lieberman, V.L. Harvey, N.M. Pedatella, J. Oberheide, R.E. Hibbins, P.J. Espy, D. Janches (2021), Tidal variations in the mesosphere and lower thermosphere before, during, and after the 2009 sudden stratospheric warming, J. Geophys. Res. Sp. Phys., 126,

V. A. Andreeva, S. V. Apatenkov, E. I. Gordeev, N. Partamies, K. Kauristie, (2021) Omega Band Magnetospheric Source Location: A Statistical Model-Based Study, J. Geophys. Res.: Space Phys,

V.  Maliniemi, H. N. Tyssøy, C. Smith-Johnsen, P. Arsenovic, and D. R. Marsh (2021), Effects of enhanced downwelling of NOx on Antarctic upper-stratospheric ozone in the 21st century, Atmos. Chem. Phys.,  

Bender, S., Espy, P. J., and Paxton, L. J.(2021), Validation of SSUSI derived ionization rates and electron densities, Annales Geophys.,

Nesse Tyssøy, H. , N. Partamies, E. M. Babu, C. Smith-Johnsen and J. A. Salice (2021), The predictive capabilities of the Auroral Electrojet  index for Medium Energy Electron Precipitation, Accepted, Front. Astron. Space Sci., doi: 10.3389/fspas.2021.714146

Nesse Tyssøy, H., M. Sinnhuber, T. Asikainen, S. Bender, M. A. Clilverd, B. Funke, M. van de Kamp, J. Pettit, C. Randall, T. Reddmann, C. J. Rodger, E. Rozanov, C. Smith-Johnsen, T. Sukhodolov, P. T. Verronen, J. M. Wissing, and O. Yakovchuk (2021), HEPPA III intercomparison experiment on electron precipitation impacts, part I: Estimated ionization rates during a geomagnetic active period in April 2010, Accepted,  JGR - Space Physics

Bender, S., Espy, P. J., and Paxton, L. J. (2021) Validation of SSUSI-derived auroral electron densities: comparisons to EISCAT data, Ann. Geophys., doi: 10.5194/angeo-39-899-2021

P.T. Verronen, A. Kero, N. Partamies, M.E., Szeląg, S.-I. Oyama, Y. Miyoshi, and E. Turunen (2021), Simulated seasonal impact on middle atmospheric ozone from high-energy electron precipitation related to pulsating aurorae, Ann. Geophys., doi: 10.5194/angeo-39-883-2021

F. Enengl, N. Partamies, N. Ivchenko, and L. Baddeley (2021), On the relationship of energetic particle precipitation and mesopause temperature, Ann. Geophys., doi: 10.5194/angeo-39-795-2021

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G. Stober, A. Kozlovsky, A. Liu, Z. Qiao, M. Tsutsumi, C. Hall, S. Nozawa, M. Lester, E. Belova, J. Kero, P.J. Espy, R.E. Hibbins, N.J. Mitchell (2021) Atmospheric tomography using the Nordic Meteor Radar Cluster and Chilean Observation Network De Meteor Radars: network details and 3DVAR retrieval, Atmos. Meas. Tech.,


Dynamics of the Asymmetric Geospace / 2020

J.P. Reistad, K.M. Laundal, A. Ohma, T. Moretto, S.E. Milan (2020), An explicit IMF By dependence on solar wind–magnetosphere coupling, Geophys. Res. Ltr.,

Haaland, P.W. Daly, E. Vilenius, P. Krcelic, I. Dandouras (2020) Suprathermal Fe in the Earth's Plasma Environment: Cluster RAPID Observations, J. Geophys. Res.: Space Physics,

C. P. Escoubet, K.-J. Hwang, S. Toledo-Redondo, L. Turc, S.E. Haaland, et al. (2020) Cluster and MMS Simultaneous Observations of Magnetosheath High Speed Jets and Their Impact on the Magnetopause, Frontiers in Astronomy and Space Sciences,

S. M. Hatch, T. Moretto, K. A. Lynch, K. M. Laundal, J. W. Gjerloev, E. J. Lund (2020), The relationship between cusp-region ion outflows and east-west magnetic field fluctuations at 4000-km altitude, J. Geophys. Res.,

Haaland, G. Paschmann, M. Øieroset, T. Phan, H. Hasegawa, S. A. Fuselier, V. Constantinescu, S. Eriksson, K. J. Trattner, S. Fadanelli, P. Tenfjord, B. Lavraud, C. Norgren, J. P. Eastwood, H. Hietala, J. Burch (2020), Characteristics of the Flank Magnetopause: MMS Results, J. Geophys. Res.: Space Phys.,

Li, M. Förster, Z. Rong, S. Haaland, E. Kronberg, J. Cui, L. Chai, Y. Wei (2020), The Polar Wind Modulated by the Spatial Inhomogeneity of the Strength of the Earth’s Magnetic Field, J. Geophys. Res.: Space Phys.,

Spicher, A., K. Deshpande, Y. Jin, K. Oksavik, M. D. Zettergren, L. B. N. Clausen, J. I. Moen, M. R. Hairston, and L. J. Baddeley (2020), On the production of ionospheric irregularities via Kelvin-Helmholtz instability associated with cusp flow channels, J. of Geophys. Res.: Space Physics,

Jenner, L. A., A. G. Wood, G. D. Dorrian, K. Oksavik, T. K. Yeoman, A. R. Fogg, and A. J. Coster (2020), Plasma density gradients at the edge of polar ionospheric holes: the absence of phase scintillation, Annales Geophysicae,

Vorobev A. V., V. A. Pilipenko, R. I. Krasnoperov, G. R. Vorobeva, D. A. Lorentzen (2020), Short-term forecast of the auroral oval position on the basis of the "virtual globe'" technology, Russ. J. Earth Sci., 20, ES6001,

Bergin, A., Chapman, S. C., and Gjerloev, J. W. (2020), AE, DST, and their SuperMAG counterparts: The effect of improved spatial resolution in geomagnetic indices, J. Geophys. Res.: Space Physics, 125, e2020JA027828,

Krcelic, S. Haaland, L. Maes, R. Slapak, and A. Schillings (2020), Estimating the fate of oxygen ion outflow from the high-altitude cusp, Annales Geophys.,

A.F. Follestad, K. Herlingshaw, H. Ghadjari, D.J. Knudsen, K.A. McWilliams, J.I. Moen, A. Spicher, J. Wu, K. Oksavik (2020), Dayside Field Aligned Current Impacts on Ionospheric Irregularities, Geophys. Res. Ltrs.,

O.V. Kozyreva,V. A. Pilipenko, E.C. Bland, L.J. Baddeley, V. I. Zakharov (2020), Periodic Modulation of the Upper Ionosphere by ULF Waves as Observed Simultaneously by SuperDARN Radars and GPS/TEC Technique, J. Geophys. Res.: Space Physics,

Paschmann, G., Sonnerup, B.U.Ö, Haaland, S.E. and Denton, R.E. (2020), Comparison of Quality Measures for Walén Relation, J. Geophys. Res.: Space Physics,

Zhang, QH, Zhang, YL, Wang, C, Lockwood, M, Yang, HG, Tang, BB , Xing, ZY, Oksavik, K, Lyons, LR, Ma, YZ, Zong, QG, Moen, JI, Xia, LD (2020), Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth's magnetotail, PNAS (Proc. of the Natl. Acad. Sci. USA),

Ohtani, S. and Gjerloev, J.W. (2020), Is the Substorm Current Wedge an Ensemble of Wedgelets?: Revisit to Midlatitude Positive Bays, J.Geophys. Res.: Space Physics,

S. E. Milan, J. A. Carter, G.E.Bower, S. M. Imber, L.J.Paxton, B. J. Anderson, M. R. Hairston, and B. Hubert (2020), Dual-Lobe Reconnection and Horse-Collar Auroras, J. Geophys. Res.: Space Physics,

M. G. Shepherd, C. Е. Meek, W.К. Hocking, C. М. Hall, N. Partamies, F. Sigernes, A.H.Manson, W. Е.Ward (2020), Multi-instrument study of the mesosphere-lower thermosphere dynamics at 80°N during the major SSW in January 2019, Science Direct,

Laundal, K.M., Reistad, J.P.Hatch, S.M., Moretto, T., Ohma, A.Østgaard, N., Tenfjord, P.A.R., Finlay, C.C., Kloss, C. (2020), Time-scale dependence of solar wind-based regression models of ionospheric electrodynamics, Scientific Reports,

A. S. Lukin, E. V. Panov, A. V. Artemyev, A. A. Petrukovich, S. Haaland, et al. (2020) Comparison of the Flank Magnetopause at Near‐Earth and Lunar Distances: MMS and ARTEMIS Observations, J. Geophys. Res.: Space Phys.,

Hatch, S. M., Haaland, S., Laundal, K. M., Moretto, T., Yau, A. W., Bjoland, L., Reistad, J. P., Ohma, A., and Oksavik, K. (2020), Seasonal and hemispheric asymmetries of F‐region polar cap plasma density: Swarm and CHAMP observations, J. Geophys. Res.: Space Physics,

E.A. Kronberg, F. Gastaldello, S. Haaland, A. Smirnov, M. Berrendorf, S. Ghizzardi, K.D. Kuntz, N. Sivadas, R.C. Allen, A. Tiengo (2020), Prediction and Understanding of Soft-proton Contamination in XMM-Newton: A Machine Learning Approach, Astrophys., J.,

N.A. Case, A. Grocott, R.C. Fear, S. Haaland, J.H. Lane (2020), Convection in the Magnetosphere‐Ionosphere System: A Multimission Survey of Its Response to IMF By Reversals, J. Geophys. Res.: Space

Ma, Y.-Z., Q.-H. Zhang, P. T. Jayachandran, K. Oksavik, L. R. Lyons, Z.-Y. Xing, S.-Y. Zhou, M. Hairston, and Y. Wang (2020), Statistical study of the relationship between ion upflow and field-aligned current in the topside ionosphere for both hemispheres during geomagnetic disturbed and quiet times, J. Geophys. Res. Space

Herlingshaw, K., L. J. Baddeley, K. Oksavik, and D. A. Lorentzen (2020), A Statistical Study of Polar Cap Flow Channels and their IMF By dependence, J. Geophys. Res. Space Physics,

Bjoland, L. M., Y. Ogawa, U. P. Løvhaug, D. A. Lorentzen, S. M. Hatch, and K. Oksavik (2020), Electron density depletion region observed in the polar cap ionosphere, J. Geophys. Res. Space

S. A. Fuselier, S. Haaland, P. Tenfjord, et al. (2020) High‐density magnetospheric He+ at the dayside magnetopause and its effect on magnetic reconnection, J. Geophys. Res.: Space Phys.,

Hard Radiation from Thunderstorms / 2020

A. Lindanger, M. Marisaldi, C. Maiorana, D. Sarria, K. Albrechtsen, N. Østgaard, M. Galli, A. Ursi, C. Labanti, M. Tavani, C. Pittori, F. Verrecchia (2020), The 3rd AGILE Terrestrial Gamma Ray Flash catalog. Part I: Association to lightning sferics, J. Geophys. Res.,  

Maiorana, M. Marisaldi, A. Lindanger, N. Østgaard, D. Sarria, A. Ursi, M. Galli, C. Labanti, M. Tavani, C. Pittori, F. Verrecchia (2020) The 3rd AGILE Terrestrial Gamma Ray Flash catalog. Part II: Optimized selection criteria and characteristics of the new sample, J. Geophys. Res.,

Fioretti, V., Bulgarelli, A., Tavani, M., Sabatini, S., Aboudan, A., Argan, A., Cattaneo, P. W.,  Chen, A. W.,  Donnarumma, I., Longo, F.,  Galli, M., Giuliani, A.,  Marisaldi, M.,  Parmiggiani, N., Rappoldi, A. (2020), AGILESim: Monte Carlo Simulation of the AGILE Gamma-Ray Telescope, Astrophys. J.,  

Casentini, C...Marisaldi, M., et al. (2020), AGILE Observations of Two Repeating Fast Radio Bursts with Low Intrinsic Dispersion Measures, Astrophys. J. Ltrs.,

A. van der Velde, J. Montanya, T. Neubert, O. Chanrion, N. Østgaard, S. Goodman, J. A. Lopez, F. Fabro, V. Reglero (2020) Comparison of high-speed optical observations of a lightning flash from space and the ground, Earth and Space Sci.,

Soler, F. J. Perez-Invernon, F. J. Gordillo-Vazquez, A. Luque, D. Li, A. Malagon-Romero, T. Neubert, O. Chanrion, V. Riglero, J. Navarro-Gonzalea, G. Lu, H. Zhang, A. Huang, N. Østgaard (2020) Blue optical observations of narrow bipolar events by ASIM confirm corona streamer activity in thunderstorms, J. Geophys. Res.,

C. A. Skeie, N. Østgaard, N. G. Lehtinen, D. Sarria, P. Kochkin, A.I. deBoer, M. Bardet, C. Allasia, F. Flourens (2020) Constraints on recoil leader properties estimated from X-ray emissions in aircraft-triggered discharges, J. Geophys. Res.,

A. Luque, F. J. Gordillo-Vazquez, D. Li, A. Malagon-Romero, F. J. Perez-Invernon, A. Schmalzried, S. Soler, O. Chanrion, M. Heumesser, T. Neubert, V. Reglero, N. Østgaard (2020) Modeling lightning observations from space-based platforms (CloudScat.jl 1.0), Geosci. Model Dev.,

M. Heumesser, O. Chanrion, T. Neubert, H. Christian, C. Kohn, K. Dimitriadou, F. J. Gordillo-Vazques, A. Luque, F. J. Perez-Invernon, R. Blakeslee, A. Mezentsev, N. Østgaard, V. Reglero (2020), Spectral Observations of Optical Emissions Associated with Terrestrial Gamma-Ray Flashes, Geophys. Res. Lett.,

A. Ursi, M. Tavani, D.D. Frederiks, M. Romani, F. Verrecchia, M. Marisaldi et al. (2020) AGILE and Konus-Wind Observations of GRB 190114C: The Remarkable Prompt and Early Afterglow Phases, Astrophys. J.,

Particle Precipitation / 2020

Franzen, C., Espy, P.J., Hibbins, R.E. (2020), Modelled effects of temperature gradients and waves on the hydroxyl rotational distribution in ground-based airglow measurements, Atmos. Chem. and Phys.,

Karlsson, T., Andersson, L., Gillies, D.M., Lynch, K., Marghitu, O., Partamies, N., Sivadas, N. (2020), Quiet, Discrete Auroral Arcs—Observations, Space Sci. Rev.,

Nishimura, Y., Lessard, M.R., Katoh, Y., Miyoshi, Y., Grono, E., Partamies N., Sivadas, N., Hosokawa, K., Fukizawa, M., Samara, M., Michell, R.G., Kataoka, R., Sakanoi, T., Whiter, D.K.,Oyama, S.-I., Ogawa, Y., Kurita, S. (2020), Diffuse and pulsating aurora, Space Sci. Rev.,

Kilpua, L. Juusola, M. Grandin, A. Kero, S. Dubyagin, N. Partamies, A. Osmane, H. George, M. Kalliokoski, T. Raita, T. Asikainen, and M. Palmroth (2020), Cosmic noise absorption signature of particle precipitation during interplanetary coronal mass ejection sheaths and ejecta, Ann. Geophys.,

Asikainen, A. Salminen, V. Maliniemi, K. Mursula (2020), Influence of enhanced planetary wave activity on the polar vortex enhancement related to energetic electron precipitation, J. Geophys. Res.: Atmospheres,

Salminen, T. Asikainen, V. Maliniemi, K. Mursula (2020), Dependence of Sudden Stratospheric Warmings on Internal and External Drivers, Geophys. Res. Let.,

Tesema, F.Partamies, N.Tyssøy, H.N., Kero, A., and Smith-Johnsen, C. (2020), Observations of electron precipitation during pulsating aurora and its chemical impact,  J. Geophys. Res.: Space Physics,

Tartaglione N., T. Toniazzo, Y. Orsolini, Odd Helge Otterå (2020), A note on the statistical evidence for an influence of geomagnetic activity on Northern Hemisphere seasonal-mean stratospheric temperatures using the Japanese 55-year Reanalysis, Ann. Geophys.,

Maliniemi, V., Tyssøy, H.N., Smith-Johnsen, C., et al. (2020), Will Climate Change Impact Polar NOx Produced by Energetic Particle Precipitation?, Geophys. Res. Ltrs.,

N. Tartaglione, T. Toniazzo, Y. Orsolini, O.H. Otterå (2020), Impact of solar irradiance and geomagnetic activity on polar NOx ozone and termperature in WACCM simulations, J. Atm. Solar-Terrest. Phys.,

Dreyer, J., Partamies, N., Whiter, D., Ellingsen, P., Baddeley, L., and Buchert, S. (2020), Fragmented aurora-like emissions (FAEs) as a new type of aurora-like phenomenon, in discussion in Annales Geophysicae,

Bland, E., Tesema, F. and Partamies, N. (2020), D-region impact area of energetic particle precipitation during pulsating aurora, in discussion in Annales Geophysicae,

Tesema, F., Partamies, N., Nesse Tyssøy, H., and McKay, D. (2020), Observations of precipitation energies during different types of pulsating aurora, Ann. Geophys.,

Xu, W., Marshall, R. A., Tyssøy, H. N., & Fang, X. H. (2020), A Generalized Method for Calculating Atmospheric Ionization by Energetic Electron Precipitation, J. Geophys. Res.: Space Physics,

Kvammen, A., Wickstrøm, K., McKay, D., and Partamies, N. (2020) Auroral image classification with deep learning networks, J. Geophys. Res.,

Heino, E. and Partamies, N. (2020) Observational validation of cutoff models as boundaries of solar proton event impact area, J. Geophys. Res.,

Salminen, A., T. Asikainen, V. Maliniemi, K. Mursula  (2020) Comparing the effects of solar-related and terrestrial drivers on the northern polar vortex, J. Space Weather Space Climate,

W.E. van Caspel, P.J. Espy, R.E. Hibbins, J.P. McCormack (2020), Migrating tide climatologies measured by a high-latitude array of SuperDARN HF-radars, Ann. Geophys., 38, 1257-1265,


Dynamics of the Asymmetric Geospace / 2019

S.E. Milan, M.-T. Walach, J.A. Carter, H. Sangha, B.J. Anderson (2019), Substorm Onset Latitude and the Steadiness of Magnetospheric Convection, J. Geophys. Res.: Space Physics,

M. Shore, M. P. Freeman, J. W. Gjerloev (2019), Interplanetary Magnetic Field Control of Polar Ionospheric Equivalent Current System Modes, Space Weather,

Lessard, M.L., Fritz, B., Sadler, B., Cohen, I., Kenward, D., Godbole, N., Clemmons, J.H., Hecht, J.H., Lynch, K.A., Harrington, M., Roberts, T.M., Hysell, D., Crowely, G., Sigernes, F., Syräsuo, M., Ellingson, P., Partamies, N., Moen, J., Clausen, L., Oksavik, K., Yeoman, T. (2019), Overview of the Rocket Experiment for Neutral Upwelling Sounding Rocket 2 (RENU2), Geophys. Res. Let.,

L. Orr, S.C.Chapman, and J.W.Gjerloev (2019), Directed network of substorms using SuperMAG ground-based magnetometer data, Geophys. Res. Let., (pdf)  

Han, D.-S., T. Xu, Y. Jin, K. Oksavik, X.-C. Chen, J.-J. Liu, Q.-H. Zhang, L. Baddeley, and K. Herlingshaw (2019), Observational evidence for throat aurora being associated with magnetopause reconnection, Geophys. Res. Lett., 46,

Reistad, J. P., K. M. Laundal, N. Østgaard, A. Ohma, E. G. Thomas, S. Haaland, K. Oksavik, and S. E. Milan (2019b), Separation and quantification of ionospheric convection sources: 2. The dipole tilt angle influence on reverse convection cells during northward IMF, J. Geophys. Res. Space Physics, 124,

Reistad, J. P., K. M. Laundal, N. Østgaard, A. Ohma, S. Haaland, K. Oksavik, and S. E. Milan (2019a), Separation and quantification of ionospheric convection sources: 1. A new technique, J. Geophys. Res. Space Physics,

Laundal, K. M., Hatch, S. M., Jørgensen, T. M. (2019), Magnetic Effects of Plasma Pressure Gradients in the Upper F Region, Geophys. Res. Lett., 46, (pdf)

Hatch, Spencer M., LaBelle, James, Chaston , Christopher C. (2019) Inferring Source Properties of Monoenergetic Electron Precipitation From Kappa and Maxwellian Moment-Voltage Relationships, J. Geophys. Res.: Space Physics, (pdf)

S. Haaland, A. Runov, A. Artemyev, V. Angelopoulos (2019) Characteristics of the Flank Magnetopause: THEMIS Observations, J. Geophys. Res.: Space Physics, (pdf)

M. Shore, M. P. Freeman, J. C. Coxon, E. G. Thomas, J. W. Gjerloev, N. Olsen (2019), Spatial Variation in the Responses of the Surface External and Induced Magnetic Field to the Solar Wind, J. Geophys. Res.: Space Physics,

Ohtani, J.W. Gjerloev, M.G. Johnsen, M. Yamauchi, U. Brändström, A.M., Lewis (2019), Solar Illumination Dependence of the Auroral Electrojet Intensity: Interplay between the Solar Zenith Angle and Dipole Tilt, J. Geophys. Res.: Space Phys.,

Alm, L., André, M., Graham, D. B, Khotyaintsev, Y.V., Vaivads, A., Chappell, C.R., Dargent, J., Fuselier, S.A., Haaland, S., Lavraud, B., Li, W., Tenfjord, P., Toledo‐Redondo, S., Vines, S.K. (2019), MMS Observations of Multiscale Hall Physics in the Magnetotail, Geophys. Res. Ltrs.,

Pitkänen, T., Kullen, A., Laundal, K. M., Tenfjord, P., Shi, Q., Park, J.‐S., et al. ( 2019), IMF By influence on magnetospheric convection in Earth's magnetotail plasma sheet, Geophys. Res. Lett.,

Ohma, A.Østgaard, N.Reistad, J. P., Tenfjord, P., Laundal, K. M., Jørgensen, T. M., et al. ( 2019), Observations of Asymmetric Lobe Convection for Weak and Strong Tail Activity, J. Geophys.l Res.: Space Physics,

K. Herlingshaw, L. J. Baddeley , K. Oksavik , D.A. Lorentzen , E.C. Bland (2019), A Study of Automatically Detected Flow Channels in the Polar Cap Ionosphere, J. Geophys. Res.: Space Physics,

Frey, H. U., D. Han, R. Kataoka, M. R. Lessard, S. E. Milan, Y. Nishimura, R. J. Strangeway, and Y. Zou (2019), Dayside Aurora, Space Sci. Rev.,

Jin, J. I. Moen, A. Spicher, K. Oksavik, W. J. Miloch, L. B. N. Clausen, M. Pozoga, and Y. Saito (2019), Simultaneous Rocket and Scintillation Observations of Plasma Irregularities associated with a Reversed Flow Event in the Cusp Ionosphere, J. Geophys.Res.: Space Physics, 124, 7098-7111,

Hard Radiation from Thunderstorms / 2019

A. Ursi, M. Marisaldi, M. Tavani on behalf of the AGILE Team (2019) Detection of terrestrial gamma‑ray flashes with the AGILE/MCAL, Springer Nature,  

Ursi, A., Tavani, M., Verrecchia, F., Marisaldi, M., Argan, A., Trois, A., and Tempesta, P. (2019), A New AGILE MCAL Configuration to Detect Gamma-Ray Bursts and Sub-threshold Events in the Multimessenger Era, Astrophys. J., (pdf)

Østgaard, N., J. E. Balling, T. Bjørnsen, P. Brauer, C. Budtz-Jørgensen, W. Bujwan, B. Carlson, F. Christiansen, P. Connell, C. Eyles, D. Fehlker, G. Genov, P. Grudzinski, P. Kochkin, A. Kohfeldt, I. Kuvvetli, P. Lundahl Thomsen, S. Møller Pedersen, J. Navarro-Gonzalez, T. Neubert, K. Njøten, P. Orleanski, B. Hasan Qureshi, L. Reddy Cenkeramaddi, V. Reglero, M. Reina, J. Manuel Rodrigo, M. Rostad, M. D. Sabau, S. Savstrup Kristensen, Y. Skogseide, A. Solberg, J. Stadsnes, K. Ullaland, S. Yang (2019) The Modular X- and Gamma- ray Sensor (MXGS) of the ASIM payload on the International Space Station, Space Science Rev., (pdf)

T. Neubert, N. Østgaard, V. Reglero, E. Blanc, O. Chanrion, C. A. Oxborrow, A. Orr, M. Tacconi, O. Hartnack, D. D. V. Bhanderi (2019), The ASIM mission on the International Space Station, Space Science Rev., 215, 2, (pdf)

Østgaard, H. J. Christian, J. E. Grove, D. Sarria, A. Mezentsev, P. Kochkin, N. Lehtinen, M. Quick, S. Al-Nussirat, E. Wulf, G. Genov, K. Ullaland, M. Marisaldi, S. Yang, R. J. Blakeslee (2019), Gamma-ray glow observations at 20 km altitude, Geophys. Res: Atmospheres.,

Marisaldi, M., Galli, M., Labanti, C., Østgaard, N., Sarria, D., Cummer, S. A., et al. (2019), On the high-energy spectral component and fine time structure of terrestrial gamma ray flashes, J. Geophys. Res.: Atmospheres, 124, (pdf)

A. Ursi, M. Marisaldi, S. Dietrich, M. Tavani, A. Tiberia, F. Porcù (2019), Analysis of thunderstorms producing Terrestrial Gamma‐ray Flashes with the Meteosat Second Generation, J. Geophys. Res.: Atmospheres,

Østgaard, T. Neubert, V. Reglero, K. Ullaland, S. Yang, G. Genov, M. Marisaldi, A. Mezentsev, P. Kochkin, N. Lehtinen, D. Sarria, B.H. Qureshi, A. Solberg, C. Maiorana, K. Albrechtsen, C. Budtz‐Jørgensen, I. Kuvvetli, F. Christiansen, O. Chanrion, M. Heumesser, J. Navarro‐Gonzalez, P. Connell, C. Eyles, H. Christian, S. Al‐Nussirat (2019), First ten months of TGF observations by ASIM, J. Geophys. Res.: Atmospheres, (pdf)

Sarria, P. Kochkin, N. Østgaard, N. Lehtinen, A. Mezentsev, M. Marisaldi, B. E. Carlson, C. Maiorana, K. Albrechtsen, T. Neubert, V. Reglero, K. Ullaland, S. Yang, G. Genov, B. H. Qureshi, C. Budtz‐Jørgensen, I. Kuvvetli, F. Christiansen, O. Chanrion, M. Heumesser, K. Dimitriadou, J. Navarro‐González, P. Connell, C. Eyles (2019), The First Terrestrial Electron Beam Observed by the Atmosphere‐Space Interactions Monitor, J. Geophys. Res.: Space Physics, (pdf)

Neubert, N. Østgaard, V. Reglero, O. Chanrion, M. Heumesser, K. Dimitriadou, F. Christiansen, C. Budtz-Jørgensen, I. Kuvvetli, I.L. Rasmussen, A. Mezentsev, M. Marisaldi, G. Genov, S. Yang, P. Kochkin, J. Navarro-Gonzalez, P.H. Connell, C.J. Eyles (2019), A terrestrial gamma-ray flash and ionospheric ultraviolet emissions powered by lightning, Science,  

Particle Precipitation / 2019

Tyssøy, H. N., Haderlein, A., Sandanger, M. I., and Stadsnes, J. (2019), Intercomparison of the POES/MEPED loss cone electron fluxes with the CMIP6 parametrization, J. Geophys. Res.: Space Physics, 124, 628-642, (pdf)

R.E. Hibbins, P.J. Espy, Y.J., Orsolini, V. Limpasuvan, R.J. Barnes (2019), SuperDARN observations of semidiurnal tidal variability in the MLT and the response to sudden stratospheric warming events, J. Geophys. Res.: Atmos., 124, (pdf)

Bender, S., Sinnhuber, M., Espy, P. J., and Burrows, J. P. (2019), Mesospheric nitric oxide model from SCIAMACHY data, Atm. Chem. Phys.,

A. Salminen, T. Asikainen, V. Maliniemi and K. Mursula (2019), Effect of Energetic Electron Precipitation on the Northern Polar Vortex: Explaining the QBO Modulation via Control of Meridional Circulation, J. Geophys. Res.: Atmospheres, (pdf)

N. Partamies, K. Bolmgren, E. Heino, N. Ivchenko, J. E. Borovsky, H. Sundberg (2019) Patch size evolution during pulsating aurora, J. Geophys. Res.: Space Physics, (pdf)

Bland, E. C.Partamies, N., Heino, E., Yukimatu, A. S., & Miyaoka, H. (2019), Energetic electron precipitation occurrence rates determined using the Syowa East SuperDARN Radar, J. Geophys. Res.: Space Physics, 124, (pdf)

Zawedde, A. E., Nesse Tyssøy, H., Stadsnes, J., and  Sandanger, M. I. (2019), Are EEP events important for the tertiary ozone maximum? J. Geophys. Res.,

V. Maliniemi, T. Asikainen, A. Salminen, K. Mursula (2019), Assessing North Atlantic winter climate response to geomagnetic activity and solar irradiance variability, Quart. J. Royal Met. Soc.,

Heino, E., Verronen, P. T., Kero, A., Kalakoski, N., and Partamies, N. (2019), Cosmic noise absorption during solar proton events in WACCM‐D and riometer observations, J. Geophys. Res.: Space Physics,

Franzen, P.J. Espy, N. Hofmann, R.E. Hibbins and A.A. Djupvik (2019), Airglow Derived Measurements of Q-Branch Transition Probabilities for Several Hydroxyl Meinel Bands, Atmosphere,

McKay, D., Paavilainen, T., Gustavsson, B., Kvammen, A., and Partamies, N. (2019), Lumikot: Fast auroral transients during the growth phase of substorms, Geophys. Res. Let.,

Theory and Modeling / 2019

Wang, S., Chen, L.‐J., Bessho, N., Hesse, M., Wilson, L. B., III, Giles, B., et al. (2019), Observational evidence of magnetic reconnection in the terrestrial bow shock transition region, Geophys. Res. Let., 46,

Tenfjord, M. Hesse, C. Norgren, S. F. Spinnangr, H. Kolstø (2019), The Impact of Oxygen on the Reconnection Rate, Geophys, Res. Lett.,

Wang, S., Chen, L.‐J., Bessho, N., Hesse, M., Giles, B. L., and Moore, T. E. ( 2019), Ion behaviors in the reconnection diffusion region of a corrugated magnetotail current sheet, Geophys. Res. Let., 46,

Nakamura, R., Genestreti, K. J., Nakamura, T., Baumjohann, W., Varsani, A., Nagai, T., Hesse, M.,  et al. ( 2019), Structure of the current sheet in the 11 July 2017 Electron Diffusion Region event, J. Geophys.Res.: Space Physics, 124, 11731186,

R. Shuster, D. J. Gershman, L.‐J. Chen, S. Wang, N. Bessho, J. C. Dorelli, D. E. da Silva, B. L. Giles, W. R. Paterson, R. E. Denton, S. J. Schwartz, C. Norgren, F, D. Wilder, P. A. Cassak, M. Swisdak, V. Uritsky, C. Schiff, A. C. Rager, S. Smith, L. A. Avanov, A. F. Viñas (2019), MMS Measurements of the Vlasov Equation: Probing the Electron Pressure Divergence Within Thin Current Sheets, Geophys. Res. Lett.,

A. Fuselier, K. J. Trattner, S. M. Petrinec, M. H. Denton, S. Toledo‐Redondo, M. André, N. Aunai, C. R. Chappell, A. Glocer, S. E. Haaland, M. Hesse, L. M. Kistler, B. Lavraud, W. Li, T. E. Moore, D. Graham, L. Alm, P. Tenfjord, J. Dargent, S. K. Vines, K. Nykyri, J. L. Burch, R. J. Strangeway (2019), Mass Loading the Earth's Dayside Magnetopause Boundary Layer and Its Effect on Magnetic Reconnection, Geophys. Res. Lett.,

Bessho, L-J. Chen, S. Wang, M. Hesse (2019), Effects of the guide field on electron distribution functions in the diffusion region of asymmetric reconnection, AIP Physics of Plasmas,


Dynamics of the Asymmetric Geospace / 2018

Gjerloev, J. W., Waters, C. L. and Barnes, R. J. (2018) Deriving Global Convection Maps from SuperDARN measurements, J. Geophys. Res. Space Phys., 123, (pdf)

Shore, R. M., Freeman, M. P., and Gjerloev, J. W. (2018) An empirical orthogonal function reanalysis of the northern polar external and induced magnetic field during solar cycle 23, J. Geophys. Res.: Spaces Phys., 123, 781–795, (pdf)

G. Paschmann , S. E. Haaland, T. D. Phan , B. U. Ö. Sonnerup , J. L. Burch , R. B. Torbert D. J. Gershman, J. C. Dorelli , B. L. Giles , C. Pollock, Y. Saito , B. Lavraud , C. T. Russell , R. J. Strangeway , W. Baumjohann , S. A. Fuselier (2018), Large‐Scale Survey of the Structure of the Dayside Magnetopause by MMS, JGR: Space Physics, (pdf)

Maes, L., Maggiolo, R., De Keyser, J., Andre, M., Eriksson, A.I., Haaland, S., Li, K., Poedts, S. (2018), Solar Illumination Control of the Polar Wind, JGR: Space Physics, (pdf)

Robinson, R.M., Behnke, R.A., Moretto, T., 2018, The Critical Role of the Research Community in Space Weather Planning and Execution, Space Weather, (pdf)

Carter, J.A., Milan, S.E., Fogg, A.R., Paxton, L.J., and Anderson, B.J. (2018), The Association of High‐Latitude Dayside Aurora With NBZ Field‐Aligned Currents, J. Geophys. Res.: Space Phys., (pdf)

Dunlop, M. W., Haaland, S., Dong, X., Middleton, H. R., Escoubet, C. P., Yang, Y. (2018) Multipoint Analysis of Electric Currents in Geospace Using the Curlometer Technique. In A. Keiling, O. Marghitu, & M. Wheatland (Eds.), Electric Currents in Geospace and Beyond, Wiley. (pdf)

Humberset, B. K., J. W Gjerloev, I. R. Mann, M. Samara, R. G. Michell (2017), On the persistent shape and coherence of pulsating auroral patches, J. Geophys. Res.: Space Phys., (pdf)

J.P. Reistad, N. Østgaard, K. M. Laundal, A. Ohma, K. Snekvik, P. Tenfjord, A. Grocott, K. Oksavik, S. E. Milan (2018) Observations of Asymmetries in Ionospheric Return Flow During Different Levels of Geomagnetic Activity, J. Geophsy. Res., (pdf)

K. M. Laundal, J.P. Reistad, C. C. Finley, N. Østgaard, P. Tenfjord, K. Snekvik (2018) Interplanetary magnetic field Bx component influence on horizontal and field-aligned currents in the ionosphere, J. Geophsy. Res., (pdf)

S. Zhou , X. Luan, F. Søraas, N. Østgaard, T. Raita (2018) The detached aurorae induced by the solar wind pressure pulse in both hemispheres from imaging and in situ particle observations, J. Geophys. Res., (pdf)

P. Tenfjord, N. Østgaard, S. Haaland, K. Snekvik, K. M. Laundal, J.P. Reistad, R. Strangeway, S. E. Milan, M. Hesse (2018) How the IMF By induces a local By component during northward IMF Bz and characteristic timescales, J. Geophsy. Res., 123, (pdf)

Mann, I., K. Kauristi, R. Bamford, I. McCrea, J. Moen, K. Oksavik, M. Yamauchi, M. J. Gullikstad, and E. Turunen (2017), Challenges and Strategic Research Plans for Earth and Heliosphere: Research Infrastructures, Projects and Initiatives, Proceed. Internat. Astronom. Union, 13(S335), 219-225, (pdf)

Kunduri, B. S. R., J. B. H. Baker, J. M. Ruohoniemi, N. Nishitani, K. Oksavik, P. J. Erickson, A. J. Coster, S. G. Shepherd, W. A. Bristow, and E. S. Miller (2018), A new empirical model of the sub-auroral polarization stream, J. Geophys. Res. Space Phys., 123, (pdf)

Ma, Y.-Z., Q.-H. Zhang, Z.-Y. Xing, R. A. Heelis, K. Oksavik, and Y. Wang (2018), The ion/electron temperature characteristics of polar cap classical and hot patches and their influence on ion upflow, Geophys. Res. Lett., 45, (pdf)

Kwagala, N. K., K. Oksavik, D. A. Lorentzen, M. G. Johnsen, and K. M. Laundal (2018), Seasonal and Solar Cycle Variations of Thermally Excited 630.0 nm Emissions in the Polar Ionosphere, J. Geophys. Res. Space Phys., 123, (pdf)

Katamzi-Joseph, Z. T., A. L. Aruliah, K. Oksavik, J. B. Habarulema, K. Kauristie, and M. J. Kosch (2018), Multi-instrument observations of large-scale atmospheric gravity waves/traveling ionospheric disturbances associated with enhanced auroral activity over Svalbard, Adv. Space. Res., (pdf)

Jin, Y., and K. Oksavik (2018), GPS scintillations and losses of signal lock at high latitudes during the 2015 St. Patrick's Day storm, J. Geophys. Res.: Space Phys., 123, (pdf)

Oliveira, D. M., Arel, D., Raeder, J., Zesta, E., Ngwira, C. M., Carter, B. A., Yizengaw, E., Harlford, A.J., Tsurutani B.T., Gjerloev, J.W. (2018) Geomagnetically induced currents caused by interplanetary shocks with different impact angles and speeds, Space Weather, 16, 636–647, (pdf)

Ohtani, S., T. Motoba, J. W. Gjeroloev, J. M. Ruohoniemi, E. F. Donovan, and A. Yoshikawa, (2018) Dawnside Wedge Current System Formed during Intense Geomagnetic Storms, J. Geophys. Research: Space Physics,

V.A. Pilipenko, O.V. Kozyreva, D.A. Lorentzen, L.J. Baddeley (2018), The correspondence between dayside long-period pulsations and the open-closed field line boundary, J. Atmos. Solar-Terr. Phys.,

Kunduri, B. S. R., J. B. H. Baker, J. M. Ruohoniemi, S. Sazykin, K. Oksavik, M. Maimaiti, P. J. Chi, and M. J. Engebretson (2018), Recent developments on inner magnetosphere-ionosphere convection, J. Geophys. Res.: Space Physics, 123, (pdf)

Reidy, J.A., Fear, R.C., Whiter, D.K., Lanchester, B., Kavanagh, A.J., Milan, S.E., Carter, J.A., Paxton, L.M., and Zhang, Y. (2018), Interhemispheric Survey of Polar Cap Aurora, J. Geophys. Res.: Space Phys., (pdf)

S. E. Milan, J. A. Carter, H. Sangha, K. Laundal, N. Østgaard, P. Tenfjord, J. Reistad, K. Snekvik, J. Coxon, H. Korth and B. J. Anderson (2018) Timescales of dayside and nightside field-aligned current response to changes in solar wind-magnetosphere coupling, J. Geophys. Res., 123, (pdf)

Li, K., Wei, Y., Haaland, S., Kronberg, E. A., Rong, Z. J., Maes, L., et al. (2018), Estimating the kinetic energy budget of the polar wind outflow, J. Geophys. Res.: Space Physics, 123,

Case, N. A., Grocott, A., Martin, C. J., Haaland, S., and Nagai, T. (2018), Response of Earth's neutral sheet to reversals in the IMF By component, J. Geophys. Res.: Space Physics, 123, (pdf)

Laundal, K. M., Finlay, C. C., Olsen, N., and Reistad, J. P. (2018) Solar wind and seasonal influence on ionospheric currents from Swarm and CHAMP measurements, J. Geophys. Res.: Space Physics, 123, 4402–4429, (pdf)

Ohma, A., N. Østgaard, J.P. Reistad, P. Tenfjord, K.M. Laundal, K. Snekvik, S.E. Haaland and M.O. Fillingim (2018) Evolution of asymmetrically displaced footpoints during substorms, J. Geophys. Res.: Space Phys.,

Østgaard, N., J.P. Reistad, P. Tenfjord, K.M. Laundal, T. Rexer, S.E. Haaland, K. Snekvik, M. Hesse, S.E. Milan and A. Ohma (2018) The asymmetric geospace as displayed during the geomagnetic storm on August 17, 2001, Ann. Geophys. Discuss., (pdf)

Burrell, A.G., Halford, A., Klenzing, J., Stoneback, R.A., Morley, S.K., Annex, A.M., Laundal, K.M., Kellerman, A.C., Stansby, D., and Ma, J. (2018) Snakes on a Spaceship—An Overview of Python in Heliophysics, J. Geophys. Res.: Space Phys., (pdf)

Ohtani, S., Motoba, T., Gjerloev, J. W., Ruohoniemi, J. M., Donovan, E. F., & Yoshikawa, A. (2018) Longitudinal development of poleward boundary intensifications (PBIs) of auroral emission, J. Geophys. Res.: Space Physics, 123,

Moretto, T., Hesse, M., Vennerstrøm, S., and Tenfjord, P. (2018) Estimating the Rate of Cessation of Magnetospheric Activity in AMPERE Field-Aligned Currents, Geophys. Res. Lett., (pdf)

Sonnerup, B. U. Ö., Haaland, S. E., Paschmann, G., Denton, R. E. (2018), Quality Measure for the Walén Relation, J. Geophys. Res.: Space Phys.,

Hatch, S. M., LaBelle, J. and Chaston, C. (2018), Storm phase–partitioned rates and budgets of global Alfvénic energy deposition, electron precipitation, and ion outflow, J. Atm. Solar-Terr. Phys., 167, 1–12, (pdf)

Hatch, S. M., Chaston, C. C., and LaBelle, J. (2018), Nonthermal limit of monoenergetic precipitation in the auroral acceleration region, Geophys. Res. Ltr., 45(19), 10167–10176, (pdf)

Hatch, S. M. and LaBelle, J. (2018), Application of a new method for calculation of low-frequency wave vectors, In G. Fischer, G. Mann, M. Panchenko, & P. Zarka (Eds.), Planetary Radio Emissions VIII (pp. 247–260m Vienna: Austrian Academy of Sciences Press, (pdf)

Hard Radiation from Thunderstorms / 2018

Mezentsev, A., Lehtinen, N., Østgaard, N., Pérez-Invernón, F. J., and Cummer, S. A. (2018), Spectral characteristics of VLF sferics associated with RHESSI TGFs, J. Geophys. Res.: Atmospheres, 123, (pdf)

Lehtinen, N. and N. Østgaard (2018) X-ray emissions in a multi-scale fluid model of a streamer discharge, J. Geophsy. Res., (pdf)

Kochkin, P., D. Sarria, C.A. Skeie, A. P. J. van Deursen, A. I. de Boer, M. Bardet, C. Allasia, F. Flourens, N. Østgaard (2018) In-flight observation of positron annihilation by ILDAS, J. Geophsy. Res., (pdf)

Liu, Z., Koh, K.L., Mezentsev, A., Enno, S.-E., Sugier, J., Fullekrug, M., (2018) Lightning Sferics: Analysis of the Instantaneous Phase and Frequency Inferred From Complex Waveforms, Radio Science, (pdf)

Füllekrug, M., Koh, K., Liu, Z. and Mezentsev, A. (2018), Detection of Low-Frequency Continuum Radiation, Radio Science, (pdf)

D. Sarria, C. Rutjes, G. Diniz, A. Luque, K. M. A. Ihaddadene, J. R. Dwyer, N. Østgaard, A. B. Skeltved, I. S. Ferreira and U. Ebert (2018), Evaluation of Monte Carlo tools for high energy atmospheric physics II: relativistic runaway electron avalanches, J. Geoscient. Model Devel., (pdf)

Albrechtsen, K.H., Østgaard, N., Berge, N., and Gjesteland, T. (2018) Observationally Weak TGFs in the RHESSI Data, J. Geophys. Res.: Atmos., (pdf)

W. Cattaneo, A. Rappoldi, A. Argan, G. Barbiellini, F. Boffelli, A. Bulgarelli, B. Buonomo, M. Cardillo, A. W. Chen, V. Cocco, S. Colafrancesco, F.D’Ammando, I. Donnarumma, A. Ferrari, V. Fioretti, L. Foggetta, T. Froysland, F. Fuschino, M. Galli, F. Gianotti, A. Giuliani, F. Longo, F. Lucarelli, M. Marisaldi, et al. (2018), Calibration of AGILE-GRID with On-ground Data and Monte Carlo Simulations, Astrophys J., (pdf)

Particle Precipitation / 2018

McKay, D., Partamies, N., and Vierinen, J. (2018), Pulsating aurora and cosmic noise absorption associated with growth-phase arcs, Ann. Geophys., 36, 59-69, (pdf)

G. Kishore Kumar, H. Nesse Tyssøy, Bifford P. Williams (2018), A preliminary comparison of Na lidar and meteor radar zonal winds during geomagnetic quiet and disturbed conditions, J. Atm.-Solar-Terr. Phys., (pdf)

Smith-Johnsen, C., Orsolini, Y., Stordal, F., Limpasuvan, V., Perot, K. (2018), Nighttime mesospheric ozone enhancements during the 2002 southern hemispheric major stratospheric warming, J. Atm. Solar-Terrest. Phys., (pdf)

Smith‐Johnsen C., D.R. Marsh, Y. Orsolini, H. NesseTyssøy, K. Hendrickx, M.I. Sandanger, L.‐K.G. Ødegaard, and F. Stordal (2018) Nitric oxide response to the April 2010 electron precipitation event ‐ using WACCM and WACCM‐D with and without medium energy electrons, J. Geophys. Res. Space Physics, 123, (pdf)

Zawedde A. E., H. Nesse Tyssøy, J. Stadsnes, and M. I. Sandanger (2018), The Impact of Energetic Particle Precipitation on Mesospheric OH – Variability of the Sources and the Background Atmosphere, J. Geophys. Res. Space Physics, 123, (pdf)

Smith, A.K., Espy, P.J., López-Puertas, M., Tweedy, O.V. (2018) Spatial and Temporal Structure of the Tertiary Ozone Maximum in the Polar Winter Mesosphere, J. Geophys. Res. Atm., (pdf)

Bland, E.C., E. Heino, M. Kosch, and N. Partamies (2018) SuperDARN radar‐derived HF radio attenuation during the September 2017 solar proton events, Space Weather, 16, (pdf)

Orsolini, Y. J., SmithJohnsen, C., Marsh, D. R., Stordal, F., Rodger, C. J., Verronen, P. T., and Clilverd, M. A. (2018), Mesospheric nitric acid enhancements during energetic electron precipitation events simulated by WACCM‐D,  J. Geophys. Res.: Atmos., 123, 6984–6998, (pdf)

Hendrickx, K., Megner, L., Marsh, D.R. and Smith-Johnsen, C. (2018), Production and transport mechanisms of NO in the polar upper mesosphere and lower thermosphere in observations and models, Atmos. Chem. Phys., (pdf)

Hibbins, R., Espy, P., and de Wit, R. (2018) Gravity-wave detection in the mesosphere using airglow spectrometers and meteor radars, Infrasound Monitoring for Atmospheric Studies: Challenges in Middle-atmosphere Dynamics and Societal Benefits, eds. A. Le Pichon, E. Blanc, A. Hauchecorne. Springer, ISBN 978-3-319-75138-2,, pp 649-668.

Blanc, E., Pol, K., Le Pichon, A., Hauchecorne, A., Keckhut, P., Baumgarten, G., Hildebrand, J., Höffner, J., Stober, G., Hibbins, R., Espy, P., et al. (2018), Middle atmosphere variability and model uncertainties as investigated in the framework of the ARISE project, Infrasound Monitoring for Atmospheric Studies: Challenges in Middle-atmosphere Dynamics and Societal Benefits, eds. A. Le Pichon, E. Blanc, A. Hauchecorne. Springer, ISBN 978-3-319-75138-2,, pp 845-887.

Franzen, C., Espy, P.J., Hibbins, R.E. and Djupvik, A.A. (2018), Observation of Quasiperiodic Structures in the HydroxylAirglow on Scales Below 100 m, J. Geophys. Res: Atm., (pdf)

Shi, X., Ruohoniemi, J.M., Baker, J.B.H., Lin, ., Bland, E.C., Hartinger, M.D., Scales, W.A. (2018), Survey of Ionospheric Pc3-5 ULF Wave Signatures in SuperDARN High Time Resolution Data, J. Geophys. Res.: Space Phys., (pdf)

Theory and Modeling / 2018

Hesse, Y.-H. Liu, L.-J. Chen, N. Bessho, S. Wang, J. L. Burch, T. Moretto, C. Norgren, K. J. Genestreti, T. D. Phan, and P. Tenfjord (2018), The physical foundation of the reconnection electric field, Physics of Plasmas 25, 032901, (pdf)

K. J. Genestreti, A. Varsani , A., Burch, J.L., Cassak, P.A., Torbert, R.B., Nakamura, R., Ergun, R.E., Phan, T.-D., Toledo-Redondo, S., Hesse, M., et al. (2018), MMS Observation of Asymmetric Reconnection Supported by 3‐D Electron Pressure Divergence, JGR: Space Physics, (pdf)

Liu, Y-H., Hesse, M., Cassak, P. A., Shay, M.A., Wang, S., Chen, L-J. (2018) On the collisionless asymmetric magnetic reconnection rate, Geophys. Res. Ltr.,

Liu Y.‐ H., M. Hesse, T.C., Li, M.M. Kuznetsova, and A., Le (2018), Orientation and stability of asymmetric magnetic reconnection x‐line, J. Geophys. Res. Space Phys., 123,

E. Ergun , K. A. Goodrich , F. D. Wilder , N. Ahmadi , J. C. Holmes , S. Eriksson , J., E. Stawarz , R. Nakamura , K. J. Genestreti, M. Hesse, et al. (2018), Magnetic reconnection, turbulence, and particle acceleration: Observations in the Earth's magnetotail, Geophys. Res. Lett., 45, 3338–3347,

L. Burch , R. E. Ergun , P. A. Cassak , J. M. Webster , R. B. Torbert , B. L. Giles , J. C. Dorelli , A. C. Rager , K.‐J. Hwang, T. D. Phan , K. J. Genestreti , R. C. Allen , L.‐J. Chen, S. Wang , D. Gershman , O. Le Contel , C. T. Russell , R. J. Strangeway , F. D. Wilder, D. B. Graham , M. Hesse , et al. (2018), Localized oscillatory energy conversion in magnetopause reconnection, Geophys. Res. Lett.s, 45, 1237–1245. (pdf)

L.-J. Chen, S. Wang, L.B. Wilson III, S. Schwartz, N. Bessho, T. Moore, D. Gershman, B. Giles, D. Malaspina, F.D. Wilder, R.E. Ergun, M. Hesse, H. Lai, C. Russell, R. Strangeway, R.B. Torbert, J. Burch, S. Lee, C. Pollock, J. Dorelli, W. Paterson, N. Ahmadi, K. Goodrich, .B Lavraud, O. Le Contel, Yu V. Khotyaintsev, P.-A. Lindqvist, S. Boardsen, H. Wei, A. Le, L Avanov (2018) Electron Bulk acceleration and thermalization at Earth's quasi-parallel bow shock, Phys. Rev. Let., 120, 225101,

Nakamura, T. K. M., Genestreti, K. J., Liu, Y.‐H., Nakamura, R., Teh, W.‐L., Hasegawa, H., Daughton, W., Hesse, M., Torbert, R. B., and J. L. Burch (2018) Measurement of the magnetic reconnection rate in the Earth's magnetotail, J. Geophys. Res.: Space Physics, 123.

Wang, S., Chen, L.‐J., Bessho, N., Hesse, M., Yoo, J., Yamada, M., et al. (2018) Energy conversion and partition in the asymmetric reconnection diffusion region, J. Geophys. Res.: Space Physics, 123,

Hesse, M., Norgren, C., Tenfjord, P., Burch, J.L., Liu, Y.-H., Chen, L.-J., Bessho, N., Wang, S., Nakamura, R., Eastwood, J.P., Hoshino, M., Torbert, R.B., Ergun, R.E. (2018) On the role of separatrix instabilities in heating the reconnection outflow region, Phys. Plasmas 25, 122902,

Torbert, R.B., J. L. Burch, T. D. Phan, M. Hesse, M. R. Argall, et al. (2018), Electron-scale dynamics of the diffusion region during symmetric magnetic reconnection in space, Science,  

Tenfjord, P., Hesse, M., and Norgren, C. (2018), The formation of an oxygen wave by magnetic reconnection, J.Geophys.Res.: Space Physics, 123, 9370–9380, (pdf)

Norgren, C., Graham, D. B., Khotyaintsev, Y. V., André, M., Vaivads, A., Hesse, M., et al. (2018), Electron reconnection in the magnetopause current layer, J.Geophys.Res.: Space Physics, 123, 9222–9238. (pdf)

Yamada, L.-J. Chen, J. Yoo, S. Wang, W. Fox , J. Jara-Almonte, H. Ji, W. Daughton, A. Le, J. Burch , B. Giles, M. Hesse, T. Mooreand R. Torbert, (2018), The two-fluid dynamics and energetics of the asymmetric magnetic reconnection in laboratory and space plasmas, Nature Communications, vol. 9, Article number:  5223, (pdf)

Bessho, N., Chen, L.‐J., Wang, S., and Hesse, M. (2018), Effect of the reconnection electric field on electron distribution functions in the diffusion region of magnetotail reconnection, Geophys. Res. Let., 45, 12,142-12,152,


When and why are the auroras in the two hemispheres asymmetrical? / 2017

Eastwood, J.P., R. Nakamura, L. Turc, L. Mejnertsen and M. Hesse (2017), The Scientific Foundations of Forecasting Magnetospheric Space Weather, Space Sci. Rev.,

Tanskanen, E.I., K. Snekvik, J.A. Slavin, D. Pérez-Suárez, A. Viljanen, M.L., Goldstein, M.J. Käpylä, R. Hynönen, L.v.T., Häkkinen, K. Mursula (2017), Solar Cycle Occurrence of Alfvénic Fluctuations and Related Geo-Efficiency, J. Geophys. Res. Space Phys.,

Chen, L.-J., M. Hesse, et al. (2017), Electron diffusion region during magnetopause reconnection with an intermediate guide field: Magnetospheric multiscale observations, J. Geophys. Res. Space Phys., 122, 5235–5246,

Wang, S., L.J. Chen, M. Hesse, et al. (2017), Parallel electron heating in the magnetospheric inflow region, Geophys. Res. Lett., 44, 4384–4392,

Liu, Y.H., Hesse, M., Guo, F., Daughton, W., Li, H., Cassak, P.A. and Shay, M.A. (2017), Why does steady-state magnetic reconnection have a maximum local rate of order 0.1?, Phys. Rev. Lett. 118 (8), 085101,

Friis-Christensen, E., C.C. Finlay, M. Hesse, K.M. Laundal (2017), Magnetic Field Perturbations from Currents in the Dark Polar Regions During Quiet Geomagnetic Conditions, Space Sci. Rev. 206 (1-4), 281-297, (pdf)

Hesse, M., L. J. Chen, Y.-H. Liu, N. Bessho, and J. L. Burch (2017), Population Mixing in Asymmetric Magnetic Reconnection with a Guide Field, Phys. Rev. Lett. 118, 145101,

N. Bessho, L.J. Chen, M. Hesse, S. Wang (2017), The effect of reconnection electric field on crescent and U-shaped distribution functions in asymmetric reconnection with no guide field, Phys. Plasmas 24 (7), 072903,

Herland, E. V., Finlay, C. C., Olsen, N., Edvardsen, I., Nordgård-Hansen, E., Laundal, K. M., and Waag, T. I. (2017), The CHAOS-X Model and Uncertainty Values for Magnetic Directional Surveying, Society of Petroleum Engineers, (pdf)

Snekvik, K., N. Østgaard, P. Tenfjord, J. P. Reistad, K.M. Laundal, S. E. Milan, and S. E. Haaland (2017) Dayside and nightside magnetic field responses at 780 km altitude to dayside reconnection, J. Geophys. Res. Space Phys.,  (pdf)

W. Longley , P. Reiff, J. Reistad, N. Østgaard (2017), Magnetospheric Model Performance During Conjugate Aurora, Magnetosphere-Ionosphere Coupling in the Solar System, Geophysical Monograph 222, First Edition, Edited by C. R. Chapell, R. W. Schunk, P. M. Banks, J. L. Burch and R. M. Thorne, AGU, Published by John Wiley & Sons, Inc., (pdf)

Haaland, S., B. Lybekk, L. Maes, K. Laundal, A. Pedersen, P. Tenfjord, A. Ohma, N. Østgaard, J. Reistad and K. Snekvik (2017), North-south asymmetries in cold plasma density in the magnetotail lobes: Cluster observations, J. Geophys. Res. Space. Phys., (pdf)

Haaland, S., M. André, A. Eriksson, K. Li, H. Nilsson, L. Baddeley, C. Johnsen, L. Maes, B. Lybekk and A. Pedersen (201) “Low-energy Ion Outflow Observed by Cluster: Utilizing the Spacecraft Potential” in Magnetosphere-Ionosphere Coupling in the Solar System, Editor(s): Charles R. Chappell, Robert W. Schunk, Peter M. Banks, James L. Burch, Richard M. Thorne, Geophysical Monograph Series,

What are the effects of particle precipitation on the atmospheric system? / 2017

Stray, N.H., and P. J. Espy (2017), Planetary wave-like oscillations in the ionosphere retrieved with a longitudinal chain of ionosondes at high northern latitudes, J. Atmos. Sol. Terr. Phys., (pdf)

Franzen, C., R.E. Hibbins, P. J. Espy, A.A. Djupvik (2017), Optimizing hydroxyl airglow retrievals from long-slit astronomical spectroscopic observations, Atmos. Meas. Tech., 10, 3093–3101, (pdf)

Partamies, N., Weygand, J. M., and Juusola, L. (2017), Statistical study of auroral omega bands, Ann. Geophys., 35, 1069-1083, (pdf)

Grandin, M., A. Kero, N. Partamies, D. McKay, D. Whiter, A. Kozlovsky, and Y. Miyoshi (2017), Observation of pulsating aurora signatures in cosmic noise absorption data, Geophys. Res. Lett., 44, 5292–5300, (pdf)

Oyama, S., A. Kero, C. J. Rodger, M. A. Clilverd, Y. Miyoshi, N. Partamies, E. Turunen, T. Raita, P. T. Verronen, and S. Saito (2017), Energetic electron precipitation and auroral morphology at the substorm recovery phase, J. Geophys. Res. Space Physics, 122, 6508–6527, (pdf)

Søraas F., M. I. Sandanger, and C. Smith-Johnsen (2017), NOAA POES and MetOp particle observations during the 17 March 2013 storm, J. of Atm. and Solar-Terres. Phys., (pdf)

Smith-Johnsen, C., Tyssøy, H. N., Hendrickx, K., Orsolini, Y., Kumar, G. K., Ødegaard, L.-K. G., Sandanger, M. I., Stordal, F. and Megner, L. (2017), Direct and indirect electron precipitation effect on nitric oxide in the polar middle atmosphere, using a full range energy spectrum, accepted in J. Geophys. Res., (pdf)

Partamies, N., D. Whiter, A. Kadokura, K. Kauristie, H. Nesse Tyssøy, S. Massetti, P. Stauning, and T. Raita (2017, Occurrence and average behaviour of pulsating aurora, J. Geophys. Res. Space Physics, (pdf)

Sagi, K., K. Pérot, D. Murtagh, Y. Orsolini, (2017), Two mechanisms of stratospheric ozone loss in the Northern Hemisphere, studied using data assimilation of Odin/SMR atmospheric observations, Atmos. Chem. Phys., 17, 1791-1803, (pdf)

Y. J. Orsolini, V. Limpasuvan, Kristell Pérot, P. Espy, R. Hibbins, S. Lossow, K. R. Larsson, D. Murtagh (2017) Modelling the descent of nitric oxide during the elevated stratopause event of January 2013, J. of Atmos. Solar-Terrest. Phys., Volume 155, March 2017, Pages 50-61, ISSN 1364-6826, 161A  (pdf)

Ødegaard, L.-K. G., H. N. Tyssøy, F. Søraas, J. Stadsnes, and M. I. Sandanger (2017), Energetic electron precipitation in weak to moderate corotating interaction region-driven storms, J. Geophys. Res. Space Physics, 122, (pdf)

What is the role of energetic particles from thunderstorms in geospace? / 2017

Ursi, A., C. Guidorzi, M. Marisaldi, D. Sarria, F. Frontera (2017) Terrestrial gamma-ray flashes in the BeppoSAX data archive, J. Atm. Solar-Terrest. Phys., (pdf)

Skeltved, A.B., N. Østgaard, A. Mezentsev, N. Lehtinen and B. Carlson (2017), Constraints to do realistic modeling of the electric field ahead of the tip of a lightning leader, J. Geophys. Res. Atmos., (pdf)

Gjesteland, T., N. Østgaard, P. Bitzer and H. J. Christian (2017) On the timing between terrestrial gamma ray flashes, radio atmospherics, and optical lightning emission, J. Geophys. Res. Space Phys., (pdf)

Kochkin, P., A.P.J. van Deursen, M. Marisaldi, A. Ursi, A. I. de Boer, M. Bardet, C. Allasia, J.-F. Boissin, F. Flourens, N. Østgaard (2017), In-flight observation of gamma-ray glows by ILDAS, J. Geophys. Res., (pdf)

Perez-Invernon, F.J., Lehtinen, N.G., Gordillo-Vazquez, F.J., Luque, A. (2017), Whistler Wave Propagation Through the Ionosphere of Venus, JGR: Space Physics, (pdf)

How do we get beyond the large scale static picture of the ionosphere? / 2017

Kim, H., M. R. Lessard, S. L. Jones, K. A. Lynch, P. A. Fernandes, A. L. Aruliah, M. J. Engebretson, J. I. Moen, K. Oksavik, A. G. Yahnin, and T. K. Yeoman (2017), Simultaneous Observations of Traveling Convection Vortices: Ionosphere-Thermosphere Coupling, J. Geophys. Res. Space Phys., 122, (pdf)

Baddeley, L.J., D. A. Lorentzen, N. Partamies, W. Denig, V. A. Pilipenko, K. Oksavik, X. Chen, and Y. Zhang (2017), Equatorward Propagating Auroral Arcs Driven by ULF Wave Activity: Multipoint Ground and Space Based Observations in the Dusk Sector Auroral Oval, J.  Geophysi. Res. Space Phys., 122, (pdf)

B. Belakhovsky, V. A. Pilipenko, Ya. A. Sakharov, D. A. Lorentzen and S. N. Samsonov (2017), Geomagnetic and ionospheric response to the interplanetary shock on January 24, 2012, Earth, Planets and Space,

Yagova, N. Nosikova, L. Baddeley, O. Kozyreva, D. Lorentzen, and V. Pilipenko (2017) Non-triggered auroral substorms and long-period (1-4 mHz) geomagnetic and auroral luminosity pulsations in the polar cap, Ann. Geophys,

Pilipenko,V.A., Lorentzen,D.A., Kozyreva,O. V. Belakhovsky, V. B., Baddeley, L. (2017), Suppression of the dayside magnetopause surface modes, Solar-Terrestrial Phys.,

Chen, X.-C., D.-S. Han, D. A. Lorentzen, K. Oksavik, J. I. Moen, and L. J. Baddeley (2017), Dynamic Properties of Throat Aurora Revealed by Simultaneous Ground and Satellite Observations, J. Geophys. Res. Space Physics, 122, (pdf)

Zhou, X., G. Haerendel, J. I. Moen, E. Trondsen, L. Clausen, R. J. Strangeway, B. Lybekk, and D. A. Lorentzen (2017), Shock-Aurora: Field-Aligned Discrete Structures Moving along the Dawnside Oval, J. Geophys. Res. Space Physics, 122, (pdf)

Humberset, B. K., J. W Gjerloev, M. Samara, R. G. Michell (2017), Scale Size-Dependent Characteristics of the Nightside Aurora, J. Geophys. Res. Space Physics, (pdf)

Shore, R. M. Freeman, J. Wild, J. Gjerloev (2017), A high-resolution model of the external and induced magnetic field at the Earth's surface in the northern hemisphere, J. Geophys. Res. Space Phys., (pdf)

Kwagala N.K., K. Oksavik, D.A. Lorentzen, and M.G. Johnsen (2017), How often do thermally excited 630.0 nm emissions occur in the polar ionosphere?, J. Geophys. Res. Space Physics, 121,

Dods, J., S. C. Chapman, J.W. Gjerloev (2017), Characterising the Ionospheric Current Pattern Response to Southward and Northward IMF Turnings with Dynamical SuperMAG Correlation Networks, J. Geophys. Res., (pdf)

Jin, Y., J. Moen, K. Oksavik, A. Spicher, L. B. N. Clausen, and W. J. Miloch (2017), GPS scintillations associated with cusp dynamics and polar cap patches, J. Space Weather Space Clim., (pdf)

Summers, D., Shi, R., Engebretson, M. J., Oksavik, K., Manweiler, J. W., & Mitchell, D. G. (2017), Energetic proton spectra measured by the Van Allen Probes, J. Geophys. Res.: Space Phys., 122, (pdf)


When and why are the auroras in the two hemispheres asymmetrical? / 2016

Browett, S.D., R.C. Fear, A. Grocott, S.E. Milan (2016), Timescales for the penetration of IMF By into the Earth's magnetotail, J.Geophys. Res. Space Phys, (pdf)

Sonnerup, S. Haaland, G. Paschmann, T. Phan, and S. Eriksson (2016), Magnetopause, reconnection layer bounded by switch-off shocks 2: Pressure anisotropy, J. Geophys. Res. Space. Phys., (pdf)

Tenfjord P., N. Østgaard, R.J. Strangeway, S. Haaland, K. Snekvik, K.M. Laundal, J.P. Reistad, and S.E. Milan (2016), Magnetospheric response and reconfiguration times following IMF By reversals, J. Geophys. Res., 121, (pdf)

J. C. Coxon, S. E. Milan, J.A. Carter, L. B. N. Clausen, B. J. Anderson and H. Korth (2016), Seasonal and diurnal variations in AMPERE observations of the Birkeland currents compared to modeled results, J. Geophys. Res.: Space Phys., (pdf)

Shukhtina, M.A., E. I. Gordeev, V. A. Sergeev, N. A. Tsyganenko, L. B. N. Clausen, and S. E. Milan (2016) Magnetotail magnetic flux monitoring based on simultaneous solar wind and magnetotail observations, J. Geoph. Res–Space Phys., (pdf)

Dunlop, M., S. Haaland, C. Escoubet, and X.-C. Dong (2016), Commentary on accessing 3-D currents  in space: Experiences from Cluster, J. Geophys. Res. Space Physics, 121, Issue 8, (pdf)

Sonnerup, B., Paschmann, G., Haaland, S., Phan, T., Eriksson, S. (2016), Reconnection layer bounded by switch-off shocks: Dayside magnetopause crossing by THEMIS D, J. Geophys. Res. Space Physics, 121, Issue 4, (pdf)

Laundal, K. M., C. C. Finlay, N. Olsen (2016), Sunlight effects on the 3D polar current system determined from low Earth orbit measurements, Earth Planets Space, (pdf)

Laundal, K. M., I. Cnossen, S. E. Milan, S. E. Haaland, J. Coxon, N. M. Pedatella, M. Förster, J. P. Reistad (2016), North-South asymmetries in Earth’s magnetic field – Effects on high-latitude geospace, Space Sci. Rev., (pdf)

Laundal, K. M., and A. D. Richmond (2016), Magnetic coordinate systems, Space Sci. Rev., (pdf)

 J. P. Reistad, N. Østgaard, P. Tenfjord, K. M. Laundal, K. Snekvik, S. Haaland, S. E. Milan, K. Oksavik, H. U. Frey, A Grocott (2016), Dynamic effects of restoring footpoint symmetry on closed magnetic field-lines, J. Geophys. Res., 121, (pdf)

Laundal, K.M., J.W.Gjerloev, N. Østgaard, J. P. Reistad, S. Haaland, K. Snekvik, P. Tenfjord, S. Ohtani and S. E. Milan (2016), The impact of sunlight on high-latitude equivalent currents, J. Geophys. Res. Space Physics, 121, (pdf)

Milan, S.E., S.M. Imber, J.A. Carter, M.-T. Walach and B. Hubert (2016), What controls the local time extent of flux transfer events?, J. Geophys. Res., (pdf)

How do we get beyond the large-scale static picture of the ionosphere? / 2016

Kwagala, N. K.,  K. Oksavik, D. Lorentzen, and M. Johnsen (2016) On the contribution of thermal excitation to the total 630.0 nm emissions in the northern cusp ionosphere, JGR - Space Physics, (pdf)

Prikryl, P., R. Ghoddousi-Fard, J. M. Weygand, A. Viljanen, M. Connors, D. W. Danskin, P. T. Jayachandran, K. S. Jacobsen, Y. L. Andalsvik, E. G. Thomas, J. M. Ruohoniemi, T. Durgonics, K. Oksavik, Y. Zhang, E. Spanswick, M. Aquino, and V. Sreeja (2016), GPS phase scintillation at high latitudes during the geomagnetic storm of March 17-18, 2015, J. Geophys. Res. Space Physics, 121, (pdf)

Fedorov, E., N. Mazu, V. Pilipenko and L. Baddeley (2016), Modeling the high-latitude ground response to the excitation of the ionospheric MHD modes by atmospheric electric discharge, J. Geophys. Res.–Space Physics, (pdf)

Woodroffe, J. R., S. K. Morley, V. Jordanova, M. G. Henderson, M. M. Cowee, and J. W. Gjerloev (2016), The Latitudinal Variation of Geoelectromagnetic Disturbances During Large (Dst≤-100 nT) Geomagnetic Storms, Space Weather, 14, (pdf)

Newell, P. T., K. Liou, J. W. Gjerloev, T. Sotirelis, S. Wing, E. J. Mitchell (2016), Substorm probabilities are best predicted from solar wind speed, J. Atmospheric and Solar-Terrestrial Physics, (pdf)

Hajra, R., B. T. Tsurutani, E. Echer, W. D. Gonzalez, and J. W. Gjerloev (2016), Supersubstorms (SML < -2500 nT): Magnetic Storm and Solar Cycle Dependences, J. Geophys. Res. Space Physics, 121, (pdf)

Humberset, B. K., J. W Gjerloev, M. Samara, R. Michell, I. R. Mann (2016), Temporal Characteristics and Energy Deposition of Pulsating Auroral Patches, J. Geophys. Res., (pdf)

van der Meeren, C., K. Oksavik, D.A. Lorentzen, L.J. Paxton, L.B.N. Clausen (2016), Scintillation and irregularities from the nightside part of a sun-aligned polar cap arc, J. Geophys. Res., (pdf)

Chen, X.-C., D. A. Lorentzen, J. I. Moen, K. Oksavik, L. J. Baddeley, and M. Lester (2016), F-region ionosphere effects on the mapping accuracy of SuperDARN HF radar echoes, Radio Science, 51, (pdf)

Jin, Y., J. I. Moen, W. J. Miloch, L. B. N. Clausen, and K. Oksavik (2016), Statistical study of the GNSS phase scintillation associated with two types of auroral blobs, J. Geophys. Res. Space Physics, 121, (pdf)

Goldstein, J., D. V. Bisikalo, V. I. Shematovich, J.-C. Gérard, F. Søraas, D. J. McComas, P. W. Valek, K. LLera, and J. Redfern (2016), Analytical Estimate for Low Altitude ENA Emissivity, J. Geophys. Res. Space Physics, 121, (pdf)

What are the effects of particle precipitation on the atmospheric system? / 2016

Malhotra, G., J. M. Ruohoniemi, J. B. H. Baker, R. E. Hibbins, and K. A. McWilliams (2016), HF radar observations of a quasi-biennial oscillation in midlatitude mesospheric winds, J. Geophys. Res. Atmos., 121, (pdf)

Zawedde, A. E., H. Nesse Tyssøy, R. Hibbins, P. J. Espy, L.-K. G. Ødegaard, M. I. Sandanger and J. Stadsnes (2016), The impact of Energetic Electron Precipitation on Mesospheric Hydroxyl During a Year of Solar Minimum, J. Geophys. Res., (pdf)

Nesse Tyssøy, H., M .I. Sandanger, L.-K. G. Ødegaard, J.  Stadsnes, A. Aasnes, and A. E. Zawedde (2016), Energetic Electron Precipitation into the Middle Atmosphere – Constructing the Loss Cone Fluxes from MEPED POES, J. Geophys. Res., (pdf)

Ødegaard, L.-K. G., H.N. Tyssøy, M. I. J. Sandanger, J. Stadsnes and F. Søraas (2016), Space Weather Impact on the Degradation of NOAA POES MEPED Proton Detectors, J. Space Weather & Space Climate, (pdf)

de Wit, R. J., D. Janches, D. C. Fritts, and R. E. Hibbins (2016), QBO modulation of the mesopause gravity wave momentum flux over Tierra del Fuego, Geophys. Res. Lett., 43, (pdf)

Limpasuvan, V., Y. J. Orsolini, A. Chandran, R. R. Garcia, and A. K. Smith (2016), On the Composite Response of the MLT to Major Sudden Stratospheric Warming Events with Elevated Stratopause, J. Geophys. Res. Atmos., 121, (pdf)

Savolainen, T., D. K. Whiter, and N. Partamies (2016), Automatic segmentation and classification of seven-segment display digits on auroral images, Geosci. Instrum. Method. Data Syst. Discuss., (pdf)

Kauristie, K., M. Myllys, N. Partamies, A. Viljanen, P. Peitso, L. Juusola, S. Ahmadzai, V. Singh, R. Keil, U. Martinez, A. Luginin, A. Glover, V. Navarro, and T. Raita (2016), Forecasting auroras from regional and global magnetic field measurements, Geosci. Instrum. Method. Data Syst. Discuss., (pdf)  

What is the role of energetic particles from thunderstorms in geospace? / 2016

Ursi, A., M. Marisaldi, M.  Tavani, D. Casella, P. Sano, S. Dietrich (2016) Detection of multiple terrestrial gamma-ray flashes from thunderstorm system, J. Geophys. Res.–Biogeosciences, (pdf)

Ursi A., P. Sanò, D. Casella, M. Marisaldi, S. Dietrich, and M. Tavani (2016), A pipeline to link meteorological information and TGFs detected by AGILE, J. Geophys. Res., (pdf)

Liu, Z., K.L. Koh, A. Mezentsev, S.-E. Enno, J. Sugier, and M. Füllekrug (2016), Variable phase propagation velocity for long-range lightning location system, Radio Science, (pdf)

Mishin, E., B. Watkins, N. Lehtinen, B. Eliasson, T. Pedersen, S. Grach (2016) Artificial ionospheric layers driven by high-frequency radiowaves: An assessment, J. Geophys. Res.: Space Phys., (pdf)

P. Kochkin, C. Köhn, Ut. Ebert and L. van Deursen (2016) Analyzing x-ray emissions from meter-scale negative discharges in ambient air, Plasma Sources Sci. Technol., (pdf)

Lyu, F.,  S.A. Cummer, M. Briggs, M. Marisaldi, R. J. Blakeslee, E.c Bruning, J. G. Wilson, W. Rison, P. Krehbiel, G. Lu, E. Cramer, G. Fitzpatrick , B. Mailyan, S. McBreen, O. J. Roberts, and M. Stanbro (2016), Ground detection of terrestrial gamma ray flashes from distant radio signals, Geophys. Res. Ltr., (pdf)

Kochkin, P., N. Lehtinen, A.P.J. van Deursen and N. Østgaard (2016) Pilot system development in metre-scale laboratory discharge, J.Phys.D: Appl. Phys.,  (pdf)

Füllekrug, M., Z. Liu, K. Koh, A. Mezentsev, S. Pedeboy, S. Soula, S.-E. Enno, J. Sugier, and M. J. Rycroft (2016) Mapping lightning in the sky with a mini array, Geophys. Res. Ltrs., (pdf)

Rutjes, C., D. Sarria, A. Broberg Skeltved, A. Luque, G. Diniz, N. Østgaard, and U. Ebert (2016), Evaluation of Monte Carlo tools for high energy atmospheric physics, Geosci. Model Dev. Discuss., (pdf)

Mezentsev, A., N. Østgaard, T. Gjesteland, K. Albrechtsen, N. Lehtinen, M. Marisaldi, D. Smith and S. Cummer (2016), Radio emissions from double RHESSI TGFs,  J. Geophys. Res.: Atmos., (pdf)

Østgaard, N., B. E. Carlson, R. S. Nisi, T. Gjesteland, Ø. Grøndahl, A. Skeltved, N. G. Lehtinen, A. Mezentsev, M. Marisaldi, and P. Kochkin (2016), Relativistic electrons from sparks in the laboratory, J. Geophys. Res. Atmos., 121, (pdf)


When and why are the auroras in the two hemispheres asymmetrical? / 2015

Fear, R. C., S. E. Milan, J. A. Carter, and R. Maggiolo (2015), The interaction between transpolar arcs and cusp spots, Geophys. Res. Lett., 42, 9685-9693, (pdf)

Ganushkina, N.Y., M.W. Liemohn, S. Dubyagin, I.A. Daglis, I. Dandouras, Iannis; D.L. De Zeeuw, Y. Ebihara, R. Ilie, R.M. Katus, M.V. Kubyshkina, S. Milan, S. Ohtani, N. Østgaard, J.P. Reistad, P. Tenfjord, F.R. Toffoletto, S.G.  Zaharia, O.A. Amariutei (2015), Defining and resolving current systems in geospace, Annales Geophysicae, (pdf)

Haaland, S., A. Eriksson, M. André, L. Maes, L. Baddeley, A. Barakat, R. Chappell, V. Eccles, C. Johnsen, B. Lybekk, K. Li, A. Pedersen, R. Schunk, and D. Welling (2015), Estimation of cold plasma outflow during geomagnetic storms, J. Geophys. Res., 120, 021810, (pdf)

Tenfjord, P., N. Østgaard, K. Snekvik, K. M. Laundal, J. P. Reistad, S. E. Haaland, S. E. Milan (2015), How the IMF By induces a By component in the closed magnetosphere and how it leads to asymmetric currents and convection patterns in the two hemispheres, J. Geophys. Res., (pdf)

Milan, S. E., J. A. Carter, H. Korth, and B. J. Anderson (2015), Principal Component Analysis of Birkeland currents determined by the Active Magnetosphere and Planetary Electrodynamics Response Experiment, J. Geophys. Res. Space Physics, 120, (pdf)

Laundal K. M., S. E. Haaland, N. Lehtinen, J. W. Gjerloev, N. Ostgaard, P. Tenfjord, J. P. Reistad, K. Snekvik, S. E. Milan, S. Ohtani, B. J. Anderson (2015), Birkeland current effects on high-latitude ground magnetic field perturbations, Geophys. Res. Lett., (pdf)

M. Förster and S. Haaland (2015), Interhemispheric differences in ionospheric convection: Cluster EDI observations revisited, J. Geophys. Res., Space Physics, Volume 120, Issue 6,  (pdf)

Maes, L., R. Maggiolo, J. De Keyser, I. Dandouras, R. C. Fear, D. Fontaine and S. Haaland (2015), Solar illumination control of ionospheric outflow above polar cap arcs, Geophys. Res. Let., Volume 42, Issue 5, (pdf)

Dorville, N., S. Haaland, C. Anekallu,G. Belmont, and L. Rezeau (2015), Magnetopause orientation: Comparison between generic residue analysis and BV method, J. Geophys. Res. Space Physics, 120, Issue 4,  (pdf)

Kronberg, E. A., E. E. Grigorenko, S. E. Haaland, P. W. Daly, D. C. Delcourt, H. Luo, L. M. Kistler, I. Dandouras (2015), Distribution of energetic oxygen and hydrogen in the near-Earth plasma sheet, J. Geophys. Res., Space Physics, Volume 120, Issue 4,  (pdf)

How do we get beyond the large-scale static picture of the ionosphere? / 2015

Oliveira, D. M, J. Raeder, and J. W. Gjerloev (2015), Effects of Interplanetary Shock Inclinations on Nightside Auroral Power Intensity, Braz. J. Phys., (pdf)

Waters, C. L., J. Gjerloev, M. Dupont, R. J. Barnes (2015), Global maps of ground magnetometer data, J. Geophys. Res., (pdf)

Tereshchenko, E. D., R. Y. Yurik and L. Baddeley (2015), Stimulated electromagnetic emission polarization under different polarizations of pump waves, Ann. Geophys., 33, 295-300, (pdf)

Forsyth, C., I.J. Rae, J. C. Coxon, M.P. Freeman, C.M. Jackman, J. Gjerloev, A.N. Fazakerley (2015), A New Technique for Determining Substorm Onsets and Phases from Indices of the Electrojet (SOPHIE), J. Geophys. Res., (pdf)

van der Meeren, C., K. Oksavik, D. A. Lorentzen, M. T. Rietveld, and L. B. N. Clausen (2105), Severe and localized GNSS scintillation at the poleward edge of the nightside auroral oval during intense substorm aurora, J. Geophys. Res. Space Physics, (pdf)

Han, D.-S., X.-C. Chen, J.-J. Liu, Q. Qiu, K. Keika, Z.-J. Hu, J.-M. Liu, H.-Q. Hu, and H.-G. Yang (2015), An extensive survey of dayside diffuse aurora based on optical observations at Yellow River Station, J. Geophys. Res. Space Physics, 120, 7447–7465, (pdf)

Chen, X.-C., D. A. Lorentzen, J. I. Moen, K. Oksavik, and L. J. Baddeley (2015),  Simultaneous ground-based optical and HF radar observations of the ionospheric footprint of the open/closed field line boundary along the geomagnetic meridian, J. Geophys. Res., (pdf)

Cohen, I. J., M. R. Lessard, R. H. Varney, K. Oksavik, M. Zettergren, and K. A. Lynch (2015),  Ion Upflow Dependence on Ionospheric Density and Solar Photoionization, J. Geophys. Res., (pdf)

Oksavik, K., C. van der Meeren, D. A. Lorentzen, L. J. Baddeley, and J. Moen (2015), Scintillation and loss of lock from poleward moving auroral forms in the cusp ionosphere, J. Geophys. Res., (pdf)

Dods, J., S. C. Chapman, and J. W. Gjerloev (2015), Network Analysis of Geomagnetic Substorms Using the SuperMAG Database of Ground Based Magnetometer Stations, J. Geophys. Res. Space Physics, (pdf)

McCrea, I., A. Aikio, L. Alfonsi, E. Belova, S. Buchert, M. Clilverd, N. Engler, B. Gustavsson, C. Heinselman, J. Kero, M. Kosch, H. Lamy, T. Leyser, Y. Ogawa, K. Oksavik, A. Pellinen-Wannberg, F. Pitout, M. Rapp, I. Stanislawska, and J. Vierinen (2015), The science case for the EISCAT_3D radar, Progress in Earth and Planetary Science, 2:21, (pdf)

Engebretson, M. J., J. L. Posch, J. R. Wygant, C. A. Kletzing, M. R. Lessard, C.-L. Huang, H. E. Spence, C. W. Smith, H. J. Singer, Y. Omura, R. B. Horne, G. D. Reeves, D. N. Baker, M. Gkioulidou, K. Oksavik, I. R. Mann, T. Raita, and K Shiokawa (2015), Van Allen probes, NOAA, GOES and ground observations of an intense EMIC wave event extending over 12 hours in MLT, J. Geophys Res. Space Physics, 120, (pdf)

Pitout, F., A. Marchaudon, P.-L. Blelly, X. Bai, F. Forme, S. C. Buchert, and D. A. Lorentzen (2015), Swarm and ESR observations of the ionospheric response to a field-aligned current system in the high-latitude midnight sector, Geophys. Res. Lett., 42,  (pdf)

Tsurutani, B. T., R. Hajra, E. Echer and J.W. Gjerloev (2015), Extremely intense (SML ¾­2500 nT) substorms: isolated events that are externally triggered?, Ann. Geophys., 33, 519-524,  (pdf)

Knipp, D. J., L. M. Kilcommons, J. Gjerloev, R. J. Redmon, J. Slavin, and G. Le (2015), A large-scale view of Space Technology 5 magnetometer response to solar wind drivers, Earth and Space Science, 2, (pdf)

Bjoland, L. M., X. Chen, Y. Jin, A. S. Reimer, Å. Skjæveland, M. R. Wessel, J. K. Burchill, L. B. N. Clausen, S. E. Haaland, and K. A. McWilliams (2015), Interplanetary magnetic field and solar cycle dependence of northern hemisphere F region Joule heating, J. Geophys. Res., (pdf)

Lühr, H., J. Park, J. W. Gjerloev, J. Rauberg, I. Michaelis, J. M. G. Merayo, and   P. Brauer (2015), Field-aligned currents' scale analysis performed with the Swarm constellation, Geophys. Res. Lett., 42, (pdf)

Goodwin, L., B. Iserhienrhien, D. M. Miles, S. Patra, C. van der Meeren, S. C. Buchert, J. Burchill, L. B. N. Clausen, D. J. Knudsen, K. McWilliams, J. I. Moen (2015), Swarm in situ observations of F-region polar cap patches created by cusp precipitation, Geophys. Res. Lett.,  (pdf)

What are the effects of particle precipitation on the atmospheric system? / 2015

Hettrich, S., Y. Kempf, N. Perakis , J. Górski, M. Edl, J. Urbár, M. Dósa, F. Gini, O. W. Roberts, S. Schindler, M. Schemmer, D. Steenari, N .Joldzic, L.-K. G. Ødegaard, D. Sarria, M. Volwerk, and J. Prak (2015) Atmospheric Drag, Occultation ‘N’ Ionospheric Scintillation(ADONIS) mission proposal, Alpbach Summer School 2013 Team Orange, J. Space Weather Space Clim., (pdf)

Hall, C. M., S. E. Holmen, C. E. Meek, A. H. Manson, and S. Nozawa (2015), Change in turbopause altitude at 52 and 70 N, Atmos. Chem. Phys. Discuss., 15, 20287-20304, (pdf)

Holmen, S. E., C. M. Hall, and M. Tsutsumi  (2015), Neutral atmosphere temperature change at 90 km, 70 N, 19 E, 2003-2014, Atmos. Chem. Phys. Discuss., 15, 15289-15317, (pdf)  

Tanaka, Y., Y. Ogawa, A. Kadokura, N. Partamies, D. Whiter, C.-F. Enell, U. Brändström, T. Sergienko, B. Gustavsson, A. Kozlovsky, H. Miyaoka, and A. Yoshikawa (2015), Eastward-expanding auroral surges observed in the post-midnight sector during a multiple-onset substorm, Earth Planets and Space, 67:182, (pdf)

Sandanger M. I., L.-K. Ødegaard, H. Nesse Tyssøy, J. Stadsnes, F. Søraas, K. Oksavik, K. Aarsnes (2015), In flight calibration of NOAA POES proton detectors - derivation of the MEPED correction factors, J. Geophys. Res., (pdf)

Venkateswara Rao, N., P. J. Espy, R. E. Hibbins, D. C. Fritts, and A. J. Kavanagh (2015), Observational evidence of the influence of Antarctic stratospheric ozone variability on middle atmosphere dynamics, Geophys. Res. Lett., 42, (pdf)

Hendrickx K., L. Megner, J. Gumbel, D. E. Siskind, Y. J. Orsolini, H. Nesse Tyssøy and M. Hervig (2015), Observation of 27-day solar cycles in the production and mesospheric descent of EPP-produced NO, J. Geophys. Res., (pdf)

Juusola, L., K. Kauristie, M. van de Kamp, E. I. Tanskanen, K. Mursula, T. Asikainen, K. Andréeová, N. Partamies, H. Vanhamäki, A. Viljanen (2015), Solar wind control of ionospheric equivalent currents and their time derivatives, J. Geophys. Res. 120, (pdf)

Partamies, N., L. Juusola, D. Whiter and K. Kauristie (2015), Substorm evolution of auroral structures, J. Geophys. Res. 120, (pdf)

de Wit, R.J., R.E. Hibbins, P.J. Espy, and E.A. Hennum (2015), Coupling in the middle atmosphere related to the 2013 major Sudden Stratospheric Warming, Ann. Geophys., 33(3), 309-319, (pdf)

Stray, N.H., Y.J. Orsolini, P.J. Espy, V. Limpasuvan, and R.E. Hibbins, (2015) Observations of planetary waves in the mesosphere-lower thermosphere during stratospheric warming events, Atmos. Chem. Phys. 15, 4997-5005,  (pdf)

Nesse Tyssøy, H. and J. Stadsnes (2015), Cutoff latitude variation during Solar Proton Events: Causes and Consequences, J. Geophys. Res., (pdf)

What is the role of energetic particles from thunderstorms in geospace? / 2015

Østgaard, N., K. H. Albrechtsen, T. Gjesteland, A. Collier (2015), A new population of Terrestrial Gamma-ray Flashes in the RHESSI data, Geophys. Res. Letter, (pdf)

Gjesteland, T., N. Østgaard, S. Laviola, M.M. Miglietta, E. Arnone, M. Marisaldi, F. Fuschino, A.B. Collier, F. Fabro, J. Montanya (2015), Observation of intrinsically bright terrestrial gamma ray Flashes from the Mediterranean basin, J. Geophys. Res., (pdf)

M. Marisaldi, A. Argan, A. Ursi, T. Gjesteland, F. Fuschino, C. Labanti, M. Galli, M. Tavani, C. Pittori, F. Verrecchia, F. D´Amico, N. Østgaard, S. Mereghetti, R. Campana, P. W. Cattaneo, A. Bulgarelli,1 S. Colafrancesco, S. Dietrich, F. Longo, F. Gianotti, A. Rappoldi, M. Trifoglio, A. Trois (2015), Enhanced detection of Terrestrial Gamma-Ray Flashes by AGILE,  Geophys. Res. Lett., (pdf)

Carlson, B. E. , N. Østgaard, P. Kochkin, Ø. Grøndahl, R. Nisi, K. Weber, Z. Scherrer, K. LeCaptain (2015), Meter-scale spark x-ray spectrum statistics, J. Geophys. Res., (pdf)

Kabirzadeh, R., N. G. Lehtinen, and U. S. Inan (2015), Latitudinal dependence of static mesospheric E fields above thunderstorms, Geophys. Res. Lett., 42, 4208–4215, (pdf)

Carlson, B. E., C. Liang, P. Bitzer, and H. Christian (2015), Time domain simulations of preliminary breakdown pulses in natural lightning, J. Geophys. Res. Atmos., 120, 1–18,  (pdf)

Fabró, F., J. Montanyà, M. Marisaldi, O. A. van der Velde, and F. Fuschino (2015), Analysis of global Terrestrial Gamma Ray Flashes distribution and special focus on AGILE detections over South America, J. Atmos. Solar Terr. Phys., (pdf)


When and why are the auroras in the two hemispheres asymmetrical? / 2014

Laundal K. M., and J. W. Gjerloev (2014), What is the appropriate coordinate system for magnetometer data when analyzing ionospheric currents?, J. Geophys. Res., Space Physics, (pdf)

Haaland, S., J. Reistad, P. Tenfjord, J. Gjerloev, L. Maes, J. DeKeyser, R. Maggiolo, C. Anekallu, and N. Dorville (2014), Characteristics of the flank magnetopause: Cluster observations, J. Geophys. Res. Space Physics, 119,  (pdf)

Fear, R. C., S. E. Milan, R. Maggiolo, A. N. Fazakerley, I. Dandouras, S. B. Mende (2014), Direct observation of closed magnetic flux trapped in the high-latitude magnetosphere, Science, Vol. 346, 1506-1510, (pdf)

Reistad, J. P., N. Østgaard, K. M. Laundal, S. Haaland, P. Tenfjord, K. Snekvik, K. Oksavik, S. E. Milan (2014), Intensity asymmetries in the dusk sector of the poleward auroral oval due to IMF Bx, J. Geophys. Res., 119, (pdf)

Walsh, A.P., S. Haaland, C. Forsyth, A. M. Keesee, J. Kissinger, K. Li, A. Runov, J. Soucek, B. M. Walsh, S. Wing, and M. G. G. T. Taylor (2014) Dawn-dusk asymmetries in the coupled solar wind–magnetosphere–ionosphere system: a review, Ann. Geophys., (pdf)

Kronberg, E. A., S. E. Haaland, P. W. Daly, E. E. Grigorenko, L. M. Kistler, M. Fränz, and I. Dandouras (2014), Correction to “Oxygen and hydrogen ion abundance in the near-Earth magnetosphere: Statistical results on the response to the geomagnetic and solar wind activity conditions”, J. Geophys. Res. Space Ph., (pdf)

How do we get beyond the large-scale static picture of the ionosphere? / 2014

Motoba, T., S. Ohtani, A. Kadokura, and J. W. Gjerloev (2014), Interrelationship between pre-onset auroral and magnetic signatures at a geomagnetically conjugate Iceland-Syowa pair, J. Geophys. Res., 119, 761–769, (pdf)

Reisin, E., J. Scheer, M. Dyrland, C. Deehr, F. Sigernes, C. Schmidt, K. Höppner, M. Bittner, P. Ammosov, G. Gavrilyeva, J. Stegman, V. Perminov, A.I. Semenov, P. Knieling, R. Koppmann, K. Shiokawa, R.P. Lowe, M. J. López-González, E. Rodríguez, Y. Zhao, M. Taylor, R. Buriti, P. Espy, W. French, K.-U. Eichmann, J. Burrows, C. von Savigny (2014), Traveling planetary wave activity from mesopause region airglow temperatures determined by the Network for the Detection of Mesospheric Change (NDMC), J. Atmos. Sol. Terr. Phys., 119, pages 71-82, (pdf)

Nishimura, Y., L. R. Lyons, Y. Zou, K. Oksavik, J. I. Moen, L. B. Clausen, E. F. Donovan, V. Angelopoulos, K. Shiokawa, J. M. Ruohoniemi, N. Nishitani, K. A. McWilliams, and M. Lester (2014), Day-night coupling by a localized flow channel visualized by polar cap patch propagation, Geophys. Res. Lett., 41, 3701-3709, (pdf)

Gjerloev, J. W., and R. A. Hoffman (2014), The large-scale current system during auroral substorms, J. Geophys. Res. Space Physics, 119, 4591–4606,  (pdf)

van der Meeren, C., K. Oksavik, D. Lorentzen, J. I. Moen, and V. Romano (2014), GPS scintillation and irregularities at the front of an ionization tongue in the nightside polar ionosphere, J. Geophys. Res. Space Physics, 119, (pdf)

Newell, P.T. and J. W. Gjerloev (2014), Local Geomagnetic Indices and the Prediction of Auroral Power, J. Geophys. Res. Space Physics,  (pdf)

Holmes, J. M., Johnsen, M. G., Deehr, C. S., Zhou, X. Y. and Lorentzen, D. A. (2014), Circumpolar ground-based optical measurements of proton and electron shock aurora, J. Geophys. Res., 119, (pdf)

Sigernes, F., S. E. Holmen, D. Biles, H. Bjørklund, X. Chen, M. Dyrland, D. A. Lorentzen, L. Baddeley, et al. (2014), Auroral all-sky camera calibration, Geosci. Instrum. Method. Data Syst., 3, 241-245,  (pdf)

Shi, R., Z.-J. Hun, B. Ni, D. Han, X.-C. Chen, C. Zhou, and X. Gu (2014), Modulation of the dayside diffuse auroral intensity by the solar wind dynamic pressure, J. Geophys. Res., 119,  (pdf)

What are the effects of particle precipitation on the atmospheric system? / 2014

Daae, M., C. Straub, P. J. Espy, and D. A. Newnham (2014), Atmospheric ozone above Troll station, Antarctica observed by a ground based microwave radiometer, Earth Syst. Sci. Data, 6, 105-115,  (pdf)

Holmen, S.E., M.E. Dyrland, and F. Sigernes (2014), Mesospheric temperatures derived from three decades of hydroxyl airglow measurements from Longyearbyen, Svalbard (78°N), Acta Geophysica, Vol 62, No 2, pp. 302-315,  (pdf)

Holmen, S. E., M. E. Dyrland, and F. Sigernes (2014), Long-term trends and the effect of solar cycle variations on mesospheric winter temperatures over Longyearbyen, Svalbard (78°N), accepted for publication by J. Geophys. Res.,  (pdf)

de Wit, R.J., R.E. Hibbins, P.J. Espy, Y. Orsolini, V. Limpasuvan, and D. Kinnison (2014), Observations of gravity wave forcing of the mesopause region during the January 2013 major Sudden Stratospheric Warming, Geophys. Res. Lett., 41(13), 4745-4752,  (pdf)

Stray, N. H., R. J. de Wit, P. J. Espy, and R. E. Hibbins (2014), Observational evidence for temporary planetary-wave forcing of the MLT during fall equinox, Geophys. Res. Lett., 41, 6281–6288,  (pdf)

Venkateswara Rao, N., N. Balan, and A. K. Patra (2014), Solar rotation effects on the Martian ionosphere, J. Geophys. Res. Space Physics, 119,  (pdf)

Kozyra, J. U., M. W. Liemohn, C. Cattell, D. De Zeeuw, C. P. Escoubet, D. S. Evans, X. Fang, M.-C. Fok, H. U. Frey, W. D. Gonzalez, M. Hairston, R. Heelis, G. Lu, W. B. Manchester IV, S. Mende, L. J. Paxton, L. Rastaetter, A. Ridley, M. SandangerF. Soraas, et al. (2014), Solar filament impact on 21 January 2005: Geospace consequences, J. Geophys. Res. Space Physics, 119, 5401–5448,  (pdf)

Kleinknecht, N. H., P. J. Espy, and R. E. Hibbins (2014), The climatology of zonal wave numbers 1 and 2 planetary wave structure in the MLT using a chain of Northern Hemisphere Super-DARN radars, J. Geophys. Res. Atmos.,119,  (pdf)

de Wit, R.J., R.E. Hibbins, and P.J. Espy (2014), The seasonal cycle of gravity wave momentum  flux and forcing in the high latitude northern hemisphere mesopause region, J. Atmos. Solar Terr. Phys.,  (pdf)

Demissie, T.D., P. J. Espy, N. H. Kleinknecht, M. Hatlen, N. Kaifler, and G. Baumgarten (2014), Characteristics and sources of gravity waves observed in NLC over Norway, Atmos. Chem. Phys., 14, 12133–12142,  (pdf)

Stray, N.H., P.J. Espy, V. Limpasuvan, and R.E. Hibbins (2014), Characterisation of quasi-stationary planetary waves in the Northern MLT during summer, J. Atmos. Solar Terr. Phys.,   (pdf)

What is the role of energetic particles from thunderstorms in geospace? / 2014

Marisaldi, M., et al. (2014), Properties of terrestrial gamma ray flashes detected by AGILE MCAL below 30 MeV, J. Geophys. Res., (only online version published so far),  (pdf)

Nisi, R. S., N. Østgaard, T. Gjesteland, and A. B. Collier (2014), An altitude and distance correction to the source fluence distribution of TGFs, J. Geophys. Res., (pdf)

Skeltved, A. B., N. Østgaard, B. Carlson, T. Gjesteland, and S. Celestin (2014), Modeling the Relativistic Runaway Electron Avalanche and the feedback mechanism with GEANT4, J. Geophys. Res., (pdf)

Liang, C., B. Carlson, N. Lehtinen, M. Cohen, R. A. Marshall, and U. Inan (2014) Differing current and optical return stroke speeds in lightning, Geophys. Res. Ltr., (pdf)


When and why are the auroras in the two hemispheres asymmetrical? / 2013

M. Förster, Y. I. Feldstein, L. I. Gromova. L. A. Dremukhina, A. E. Levitin, and S. E. Haaland (2013), Some aspects of modelling the high-latitude ionospheric convection from Cluster/EDI data, Geomagnetism and Aeronomy, (pdf)

Søraas, F., K. M. Laundal, and M. Usanova (2013), Coincident particle and optical observations of nightside subauroral proton precipitation, J. Geophys. Res, 118, 1,  (pdf)

Reistad, J. P., N. Østgaard, K. M. Laundal and K. Oksavik (2013), On the non-conjugacy of nightside aurora and their generator mechanisms, J. Geophys. Res., 118 (D6), 3394, (pdf)

Østgaard, N., B. K. Humberset, K. M. Laundal, and J. P. Reistad (2013), Correction to ''Evolution of auroral asymmetries in the conjugate hemispheres during two substorms'', Geophys. Res. Lett., 40 (D3), 471, (pdf)

Munteanu, C.,  S. Haaland,  B. Mailyan,  M. Echim, and  K. Mursula (2013), Propagation delay of solar wind discontinuities: Comparing different methods and evaluating the effect of wavelet denoising, J. Geophys. Res., 118 (D7), 3985, (pdf)

Paschmann, G., S. Haaland, B.Sonnerup and T. Knetter (2013), Discontinuities and Alfvenic fluctuations in the solar wind, Ann. Geophys., 31, 871-887, (pdf)

Milan, S. E. (2013), Modelling Birkeland currents in the expanding/contracting polar cap paradigm, J. Geophys. Res., 118 (D9), 5532, (pdf)

Milan, S. E. (2015), Sun et Lumière: Solar wind-magnetosphere coupling as deduced from ionospheric flows and polar auroras, in D. Southwood et al. (eds.), Magnetospheric Plasma Physics: The Impact of Jim Dungey’s Research, Astrophysics and Space Science Proceedings 41, Springer International Publishing Switzerland, (pdf)

Tenfjord, P., and N. Østgaard (2013), Energy transfer and flow in the solar wind-magnetosphere-ionosphere system: A new coupling function, J. Geophys. Res., 118 (D9), 5659, (pdf)

Li, K., S. Haaland, A. Eriksson, M. André, E. Engwall, Y. Wei, E. A. Kronberg, M. Fränz, P. W. Daly, H. Zhao, Q. Y. Ren (2013), Transport of cold ions from the polar ionosphere to the plasma sheet, J. Geophys. Res., 118 (D9), 5467, (pdf)

Haaland, S., and J. W. Gjerloev (2013), On the relation between asymmetries in the ring current and magnetopause current, J. Geophys. Res., 118 (D12), 7593, (pdf)

How do we get beyond the large-scale static picture of the ionosphere? / 2013

Moen J., K. Oksavik, L. Alfonsi, Y. Daabakk, V. Romano, and L. Spogli (2013), Space weather challenges of the polar cap ionosphere, J. Space Weather Space Clim., 3, A02, (pdf)

Ribeiro, A. J., J. M. Ruohoniemi, P. V. Ponomarenko, L. B. N. Clausen, J. B. H. Baker, R. A. Greenwald, K. Oksavik, and S. de Larquier (2013), A comparison of SuperDARN ACF fitting methods, Radio Science, 48 (D3), 274, (pdf)

Engebretson, M. J., T. K. Yeoman, K. Oksavik, F. Søraas, F. Sigernes, et al. (2013), Multi-instrument observations from Svalbard of a traveling convection vortex, electromagnetic ion cyclotron wave burst, and proton precipitation associated with a bow shock instability, J. Geophys. Res., 118 (D6), 2975, (pdf)

Cohen, I. J., M. R. Lessard, S. R. Kaeppler, S. R. Bounds, C. A. Kletzing, A. V. Streltsov, J.W. Labelle, M. P. Dombrowski, S. L. Jones, R. F. Pfaff, D. E. Rowland, B. J. Anderson, H. Korth, and J.W. Gjerloev (2013), Auroral Current and Electrodynamics Structure 1 (ACES) observations of ionospheric feedback in the 2 Alfven resonator and model responses, J. Geophys. Res., 118 (D6), 3288, (pdf)

Mitchell, E. J., P. T. Newell, J. W. Gjerloev, and K. Liou (2013), OVATION-SM: A model of auroral precipitation based on SuperMAG generalized auroral electrojet and substorm onset times, J. Geophys. Res., 118 (D6), 3747,  (pdf)

Carlson, H. C., K. Oksavik, and J. I. Moen (2013), Thermally excited 630.0nm O(1D) emission in the cusp: A frequent high-altitude transient signature, J. Geophys. Res., 118, (pdf)

Motoba, T., K. Takahashi, J. Gjerloev, S. Ohtani and D. K. Milling (2013), The role of compressional Pc5 pulsations in modulating precipitation of energetic electrons, J. Geophys. Res. Space Phys., (pdf)

What are the effects of particle precipitation on the atmospheric system? / 2013

Nesse Tyssøy, H., J. Stadsnes, F. Søraas, and M. Sørbø (2013), Variations in cutoff latitude during the January 2012 solar proton event and implication for the distribution of particle energy deposition, Geophys. Res. Lett.,40 (D16), 4149, (pdf)

Straub, C., P.J. EspyR.E. Hibbins, and D.A. Newnham (2013), Mesospheric CO above Troll station, Antarctica observed by a ground based microwave radiometer, Earth Syst. Sci. Data, 5, 199-208, (pdf)

Demissie, T. D., N.H. Kleinknecht, R.E. Hibbins, P. J. Espy and C. Straub (2013), Quasi-16-day period oscillations observed in middle atmospheric ozone and temperature in Antarctica, Ann. Geophys., 31, 1279-1284, (pdf)

Tweedy, O. V., V. Limpasuvan,Y. J. Orsolini, A. K. Smith, R. R. Garcia, D. Kinnison, C. E. Randall,O.-K. Kvissel, F. Stordal, V. L. Harvey,and A. Chandran (2013), Nighttime secondary ozone layer during major stratospheric sudden warmings in specified-dynamics WACCM, J. Geophys. Res., 118 (D15), 8346,  (pdf)

Goldstein, J., D. J. McComas, P. Valek,  J. Redfern, F. Søraas, and D. Bazell (2013), Local‐time‐dependent low‐altitude ion spectra deduced from TWINS ENA images, J. Geophys. Res., 118 (D6), 2928, (pdf)

de Wit, R.J., R.E. Hibbins, P.J. Espy, and N.J. Mitchell (2013), Interannual variability of mesopause zonal winds over Ascension Island: coupling to the stratospheric QBO, J. Geophys. Res., 118 (D21), 12052, (pdf)

Demissie, T.D., K. Hosokawa, N.H. Kleinknecht, P.J. Espy, R.E. Hibbins (2013), Planetary wave oscillations observed in ozone and PMSE data from Antarctica, J. Atmos. Sol. Terr. Phys., (pdf)

Newnham, D.A. , P.J. Espy, M. A. Clilverd, C. J. Rodger, A. Seppälä, D. J. Maxfield, P. Hartogh, C. Straub, K. Holmén and R. B. Horne (2013) Observations of nitric oxide in the Antarctic middle atmosphere during recurrent geomagnetic storms, J. Geophys. Res. Space Phys., (pdf)

What is the role of energetic particles from thunderstorms in geospace? / 2013

Hansen, R. S., N. Østgaard, T. Gjesteland, and B. Carlson (2013), How simulated fluence of photons from Terrestrial Gamma ray flashes at aircraft and balloon altitudes depends on initial parameters, J. Geophys. Res., 118 (D5), 2333, (pdf)

Østgaard, N., T. Gjesteland, B. E. Carlson, A. B. Collier, S. Cummer, G. Lu, and H. J. Christian (2013), Simultaneous observations of optical lightning and terrestrial gamma ray flash from space, Geophys. Res. Lett.,40 (D10), 2423, (pdf)