Heumesser, O. Chanrion, T. Neubert, K. Dimitriadou, C. Kohn, F. Christiansen, I. Lundgaard Rasmussen, N. Østgaard, V. Reglero, A. Mezentsev, M. Marisaldi, F. J. Gordillo-Vazquez, A. Luque, F. J. Perez-Invernón, R. Blakeslee, K. Virts and H. Christian, UV and Optical Lightning Activity Associated with TGFs, AGU Fall Meeting, San Francisco, 9-13 December, 2019