JpGU-AGU Joint Meeting 2017

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[EE] ポスター発表

セッション記号 P (宇宙惑星科学) » P-EM 太陽地球系科学・宇宙電磁気学・宇宙環境

[P-EM11] [EE] Mesosphere-Thermosphere-Ionosphere Coupling in the Earth's Atmosphere

2017年5月24日(水) 15:30 〜 17:00 ポスター会場 (国際展示場 7ホール)

コンビーナ:Chang Loren(Institute of Space Science, National Central University)、Liu Huixin(九州大学理学研究院地球惑星科学専攻 九州大学宙空環境研究センター)、齊藤 昭則(京都大学大学院理学研究科地球物理学教室)、Tzu-Wei Fang

[PEM11-P17] Thermosphere response to doubling CO2: simulation results with GAIA model

*中本 雄介1、Liu Huixin1、Miyoshi Yasunobu1 (1.九州大学大学院理学府地球惑星科学専攻)

キーワード：thermosphere, CO2, vertical coupling

Using the whole atmosphere model GAIA, we investigate the influence of doubling CO2 on the thermosphere. Our results reveal consist cooling in the upper thermosphere as reported in previous work. Furthermore, we find that the cooling effect has distinct spatial and seasonal variation. First, it is stronger in polar regions than at lower latitudes. Second, it is stronger in local summer than in local winter. Third, it is stronger at night than at day. We investigate the mechanism for these variations by examining changes in the global circulation and composition.