Fundamental Physical Processes in Solar-Terrestrial Research and Their Relevance to Planetary Physics: Haaland, S., Lybekk, B., Pedersen, A., Baddeley, L., Bjoland, L., Gustavsson, B., Atmospheric erosion: Hemispheric asymmetries in ion outflow, Kona, Hawaii, 6 – 13 January, 2018 (Invited talk)