The Relationship between the East Asian Subtropical Westerly Jet and Summer Precipitation over East Asia as Simulated by the IAP AGCM4.0

被引：17

作者：

Yan Zheng-Bin ^{[1
,2
]}

Lin Zhao-Hui ^{[1
,3
]}

Zhang He ^{[1
]}

机构：

[1] Chinese Acad Sci, IAP, ICCES, Beijing 100029, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Nanjing 210044, Jiangsu, Peoples R China

来源：

ATMOSPHERIC AND OCEANIC SCIENCE LETTERS | 2014年 / 7卷 / 06期

基金：

中国国家自然科学基金;

关键词：

East Asian subtropical westerly jet; summer precipitation; IAP AGCM4.0; model evaluation;

D O I：

10.3878/AOSL20140048

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

Based on a 30-year Atmospheric Model Intercomparison Project (AMIP) simulation using IAP AGCM4.0, the relationship between the East Asian subtropical westerly jet (EASWJ) and summer precipitation over East Asia has been investigated, and compared with observation. It was found the meridional displacement of the EASWJ has a closer relationship with the precipitation over East Asia both from model simulation and observation, with an anomalous southward shift of EASWJ being conducive to rainfall over the Yangtze-Huaihe River Valley (YHRV), and an anomalous northward shift resulting in less rainfall over the YHRV. However, the simulated precipitation anomalies were found to be weaker than observed from the composite analysis, and this would be related to the weakly reproduced mid-upper-level convergence in the mid-high latitudes and ascending motion in the lower latitudes.

引用

页码：487 / 492

页数：6

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