日本地球惑星科学連合2016年大会

講演情報

印刷

インターナショナルセッション（口頭発表）

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-EM03] Mesosphere-Thermosphere-Ionosphere Coupling in the Earth's Atmosphere

2016年5月22日(日) 13:45 〜 15:15 A01 (アパホテル&リゾート 東京ベイ幕張)

コンビーナ:*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)、Chang Loren(Institute of Space Science, National Central University)、新堀 淳樹(京都大学生存圏研究所)、座長:Chang Loren(Institute of Space Science, National Central University)

14:40 〜 15:00

[PEM03-14] Behavior of Gravity waves in the thermosphere simulated by high resolution GAIA

★招待講演

*三好 勉信1、陣 英克2、藤原 均3、品川 裕之2 (1.九州大学大学、2.情報通信研究機構、3.成蹊大学)

キーワード：vertical coupling processes, atmospheric waves

It has been recognized that gravity waves play an important role on the momentum and energy balance in the thermosphere. The effects of upward propagating gravity waves on the general circulation of the thermosphere are studied using a whole atmosphere-ionosphere coupled model (GAIA). The GAIA contains the region from the ground surface to the upper thermosphere (about 500km altitude), so that we can simulate excitation of gravity waves in the lower atmosphere and their upward propagation to the thermosphere. The high horizontal resolution of the neutral atmospheric part of GAIA is about 0.5 degree longitude by 0.5 degree latitude, and this model can simulate wide ranges of gravity waves in their thermosphere. In this study, we focus our attention on gravity wave activity in the winter thermosphere. Our simulation result indicates that some of gravity waves in the winter thermosphere is originated from the polar night jet in the stratosphere/mesosphere. Moreover, the impacts of thermospheric gravity waves on variability in the ionosphere are investigated.