Response of diurnal tides to ENSO in the MLT region: a 21-year reanalysis GAIA model simulation result

Liu Huixin; Sun Yang-Yi; Miyoshi Yasunobu; Jin Hidekatsu

講演情報

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

2017年5月24日(水) 13:45 〜 15:15 A01 (東京ベイ幕張ホール)

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、座長:齊藤昭則(Kyoto University, Japan)

14:25 〜 14:45

[PEM11-18] Response of diurnal tides to ENSO in the MLT region: a 21-year reanalysis GAIA model simulation result

*Liu Huixin¹、Sun Yang-Yi¹、Miyoshi Yasunobu¹、Jin Hidekatsu² (1.九州大学理学研究院地球惑星科学専攻、2.NICT)

キーワード：tides, ENSO, vertical coupling

The whole atmosphere model GAIA is employed to investigate potential ENSO effect on the upper atmosphere. Driven by reanalysis data, effects of the strong El-Nino events in 1997-98 and 2015-2016 and La-Nina events during 1999 and 2010 are examined. Distinct features are revealed about ENSO impacts on tidal components 100 km altitude. 1. Tidal response to ENSO in meridional wind is different from those in Temperature and zonal wind 2. Tidal response in temperature and zonal wind show consistent features, with DW1 component enhances in autumn during El-nino events, DE2 and DE3 increases during La-Nina events. These characteristics provide us with a necessary global context to better connect and understand the upper atmosphere observations during ENSO events.