Dynamics and predictability of the winter climate over the Far East

远东冬季气候的动态和可预测性

• 批准号: 21740350
• 负责人: TAKAYA Koutarou
• 金额: $ 2.08万
• 依托单位: Japan Agency for Marine-Earth Science and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21740350/
• 关键词: 冬季東アジアモンスーン; シベリア高気圧; 寒冬・暖冬; 中高緯度大気循環; 北極振動(AO); 予測可能性; WPパターン; EUパターン; 冬季東アジモンスーン

Interannual variability of the East Asian winter monsoon is investigated. This project has clarified that the winter monsoon can be strongly influenced by the variability of the midlatitude westerlies at the upper levels, the arctic oscillation, and sea surface temperature variability over the tropics and Kuroshio extension region. We have also proposed a"new"definition of the residual circulation in the Transformed Eulerian Mean equations to depict three-dimensional Lagrangian motion more precisely. This project contributes further understanding of the dynamics and improvements of predictability of the winter monsoon.

研究了东亚冬季风的年际变化。该项目阐明了中纬度西风带高层的变率、北极涛动以及热带和黑潮延伸区的海表温度变率对冬季风的影响。为了更精确地描述三维拉格朗日运动，我们还对变换欧拉平均方程中的剩余环流提出了一个“新”的定义。该项目有助于进一步了解冬季风的动力学和提高可预报性。