第70回 ESCセミナー
Mechanisms of ocean-atmosphere interactions over the Kuroshio and the Gulf Stream
- 日時
- 2013年4月23日(火) 10:30-11:30
- 場所
- 横浜研究所 シミュレータ研究棟1階 会議室
- 講演者
- Arnaud Czaja
(Imperial College, Department of Physics) - 使用言語
- 英語
要旨
In this talk, motivated by recent observations of co-variations of sea surface temperature (SST), ocean currents and atmospheric circulation changes, I will put forward a new mechanism for the impact of meridional shifts of the Kuroshio on the North Pacific storm track. The new mechanism relies on an east-west reorganization of the heat transport due to atmospheric transient waves in response to changes in SST at the western boundary. The large sensitivity of transient eddy heat transport to SST is proposed to result from the interaction of weather fronts with the upper ocean through a combination of convective and inertial instabilities. Moist processes are key to the dynamics of these instabilities.
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