| Co-Investigator(Kenkyū-buntansha) |
杉本 憲彦 慶應義塾大学, 法学部(日吉), 准教授 (10402538)
木下 武也 国立研究開発法人海洋研究開発機構, 大気海洋相互作用研究分野, 研究員 (20648638)
渡辺 真吾 国立研究開発法人海洋研究開発機構, シームレス環境予測研究分野, 分野長 (50371745)
三浦 裕亮 東京大学, 大学院理学系研究科(理学部), 准教授 (70415991)
高麗 正史 東京大学, 大学院理学系研究科(理学部), 助教 (80733550)
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| Budget Amount *help |
¥43,030,000 (Direct Cost: ¥33,100,000、Indirect Cost: ¥9,930,000)
Fiscal Year 2017: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
Fiscal Year 2016: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
Fiscal Year 2015: ¥9,360,000 (Direct Cost: ¥7,200,000、Indirect Cost: ¥2,160,000)
Fiscal Year 2014: ¥7,540,000 (Direct Cost: ¥5,800,000、Indirect Cost: ¥1,740,000)
Fiscal Year 2013: ¥10,790,000 (Direct Cost: ¥8,300,000、Indirect Cost: ¥2,490,000)
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| Outline of Final Research Achievements |
A theoretical study was conducted on approximated formulae of 3-D wave activity flux and Lagrangian mean flow. The formulation applicable to both non-stationary and stationary waves was successfully made. The theoretical formulae were used to clarify the influence of the 3-D mean flow on the tropospheric clouds associated with the stratospheric sudden warming and final warming. We showed the spectral characteristics of stratospheric and mesospheric gravity waves (GWs) by MST radar observations in the Antarctic and the modulation of GWs by ENSO and MJO using satellite observation data. The momentum budget was investigated using high resolution general circulation models, showing that the in-situ generation of GWs and Rossby waves (RWs) through momentum deposit by gravity waves originating from the troposphere is significant in the middle atmosphere. This means that close interaction between GWs, RWs and the mean flow is crucial for the 3D middle atmosphere circulation.
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