Convenor: Irina Mironova (Russia)
Co-Convenors: Mitsuteru Sato (Japan), Martin Fullekrug (UK)

The recent discovery that lightning discharges can cause energetic radiation, relativistic particles, and transient luminous events in the middle atmosphere has marked a profound advance in our understanding of the Earth's atmospheric electrodynamic behaviour. This symposium explores these novel processes and their impact on the near-Earth environment which is explored by space missions supported by ground based field work. The session solicits contributions which advance knowledge in the areas of the global atmospheric electric circuit, lightning physics, transient luminous events, energetic radiation, relativistic particles, and their impact on the Earth's upper atmosphere and the magnetosphere. Interdisciplinary studies which emphasize the connection between atmospheric layers, their electrodynamics and climate change are particularly welcome.