Japan Geoscience Union Meeting 2018

Presentation information

[EE] Poster

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

[P-EM10] Coupling Processes in the Atmosphere-Ionosphere System

Tue. May 22, 2018 3:30 PM - 5:00 PM Poster Hall (International Exhibition Hall7, Makuhari Messe)

convener:Huixin Liu(Earth and Planetary Science Division, Kyushu University SERC, Kyushu University), Loren Chang(Institute of Space Science, National Central University), Yuichi Otsuka(名古屋大学宇宙地球環境研究所)

[PEM10-P08] The response of the ionosphere to increase of CO2: simulation results with GAIA model

*Takamichi Abe1, Huixin Liu2, Yasunobu Miyoshi3 (1.Department of Earth and Planetary Sciences, Kyushu University, 2.Earth and Planetary Science Division, Kyushu University SERC, Kyushu University, 3.Department of Earth and Planetary Sciences, Faculity Sciences, Kyushu University)

Keywords:ionosphere, cooling effect

We investigated the influence of increasing CO2 on the ionosphere by conducting two simulations with the atmosphere-ionospheric model of GAIA. This model indicated that trends of F2 peak (NmF2 and HmF2) are negative in most locations under the CO2 cooling effect. The global averaged magnitude of NmF2 negative effect is about -0.7%, but a number of positive locations cannot negligible. Trends of NmF2 are seasonally asymmetry; winter hemisphere tend to have positive trends while summer hemisphere tend to have negative trends during 12LT and 0LT. The trends of HmF2 are also negative in many locations, which global averaged magnitude is about -0.7km. Trends of HmF2 have positive only near geomagnetic dip equator.