2011 Fiscal Year Final Research Report
Studies on the Effects of the Stratosphere on Climate Change and its Dynamical Role
| Project/Area Number |
20244076
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Meteorology/Physical oceanography/Hydrology
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| Research Institution | Kyoto University |
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Principal Investigator |
YODEN Shigeo 京都大学, 大学院・理学研究科, 教授 (30167027)
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| Co-Investigator(Kenkyū-buntansha) |
ISHIOKA Keiichi 京都大学, 大学院・理学研究科, 准教授 (90292804)
NAITO Yoko 京都大学, 大学院・理学研究科, 助教 (50324603)
MUKOUGAWA Hitoshi 京都大学, 防災研究所, 教授 (20261349)
HORINOUCHI Takeshi 北海道大学, 地球環境科学研究院, 准教授 (50314266)
KODERA Kunihiko 名古屋大学, 太陽地球環境研究所, 客員教授 (70343887)
HIROOKA Toshihiko 九州大学, 大学院・理学研究院, 教授 (90253393)
TAGUCHI Masakazu 愛知教育大学, 教育学部, 准教授 (50397527)
SHIBATA Kiyotaka 気象庁気象研究所, 環境応用気象研究部, 室長 (50354494)
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| Project Period (FY) |
2008 – 2011
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| Keywords | 気候変動 / 成層圏 / 対流圏 / 子午面循環 / 大気波動 |
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| Research Abstract |
Effects of the stratospheric change on the main dynamical processes of the general circulation of the atmosphere and their dynamical role were clarified with data analyses of global observations and numerical studies with a hierarchy of numerical models from a dynamical core to the JMA operational model of one-month ensemble numerical weather prediction. Some specific findings associated with a stratospheric sudden warming event are large-scale frontal structure at the edge of circumpolar vortex and systematic predictability variation of the annular mode before and after the event. A chemistry-climate model was also used in addition to the above data and models, and the dynamical influences of external forcings, such as the stratospheric cooling and variations of the solar activity, on the intra-seasonal and inter-annual variations of the atmosphere were elucidated.
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