[P-EM22] [JJ] Physics and Chemistry in the Atmosphere and Ionosphere

[PEM22-P13] Improvement of high-latitude electric field model in GAIA

*Chihiro Tao¹, Hidekatsu Jin¹, Hiroyuki Shinagawa¹, Yasunobu Miyoshi², Hitoshi Fujiwara³, Mitsuru Matsumura⁴ (1.National Institute of Information and Communications Technology, 2.Kyushu University, 3.Seikei University, 4.Institute for Space-Earth environmental Research, Nagoya University)

Keywords:thermosphere, ionosphere, simulation

GAIA (Ground-to-Topside Model of Atmosphere and Ionosphere for Aeronomy) solves physical and chemical dynamics of the whole atmosphere region from the troposphere to the exosphere under interactions with the ionosphere. Input from the polar region dramatically varies depending on the solar wind and magnetospheric conditions, which affects thermosphere and ionosphere globally. Total electron contents around Japan show discrepancy between observation and GAIA simulation without the polar input variation especially disturbed term. We are conducting improvement of the polar electric field input to GAIA referring to an empirical Weimer model which varies as a function of solar wind parameters. We will report the development and initial results in this presentation.