JpGU-AGU Joint Meeting 2020

Presentation information

[E] Poster

P (Space and Planetary Sciences ) » P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM12] Coupling Processes in the Atmosphere-Ionosphere System

convener:Huixin Liu(Earth and Planetary Science Division, Kyushu University SERC, Kyushu University), Yuichi Otsuka(Institute for Space-Earth Environmental Research, Nagoya University), Yue Deng(University of Texas at Arlington), Loren Chang(Institute of Space Science, National Central University)

[PEM12-P39] Neutral and ion dynamics seen in GAIA with variable high-latitude input

*Chihiro Tao1, Hidekatsu Jin1, Hiroyuki Shinagawa1, Yasunobu Miyoshi2, Hitoshi Fujiwara3 (1.National Institute of Information and Communications Technology, 2.Department of Earth and Planetary Sciences, Kyushu University, 3.Faculty of Science and Technology, Seikei University)

Keywords:GAIA, atmosphere-ionosphere coupling, high latitude variation

Upper atmosphere shows variations reflecting complex interactions under inputs from lower and upper regions. These interactions have been an important target of the upper atmosphere physics and space weather purpose. GAIA, Ground-to-Topside Model of Atmosphere and Ionosphere for Aeronomy, is the whole atmosphere model including interaction with ionized plasma under solar EUV variation and a various waves input using a meteorological reanalysis data. We input magnetospheric variation into GAIA via electric field deposition at polar region and auroral electron precipitation using empirical models. We input polar electric potential map based on Weimer model driven by solar wind and interplanetary magnetic field with saturation effect of cross-polar-cap potential for large potential case. Variable auroral precipitation driven by Kp index is considered. Enhancement of total electron content upto mid-to-low latitude during the magnetospheric storm event is produced due to the consideration of penetration electric field. We will discuss application to neutral density variation and ionospheric storms in this presentation.