北太平洋副热带西部模态水异常东亚中高纬大气环流关系一些新认识.pdfVIP

北太平洋副热带西部模态水异常与东亚中高纬大气环流 关系的一些新认识 1,2 1 1 常蕊 张庆云 李荣凤 1, 2 1 1 Rui Chang , Qing-yun Zhang and Rong-feng Li 1. 中国科学院大气物理研究所大气科学和地球流体力学数值模拟国家重点实验室，北京, 100029 2. 中国气象局公共气象服务中心，北京, 100081 1. State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China 2. Public weather service center of China Meteorological Administration, Beijing 100081, China 2009-08-22投稿，2009-10-*改回. Rui Chang, Qing-yun Zhang, Rongfeng Li. 2009. The new understanding of the relationship between Subtropical Mode Water anomaly and the mid- high latitude atmospheric circulation over East Asia. Acta Meteorologica Sinica, ****** Abstract Based on the SODA_1.4.2 and NCAR/NCEP monthly reanalysis data from 1958 to 2001, the new understanding of the relationship between the seasonal-annual variations of the Northwestern Subtropical Mode Water (STMW) and the mid-high latitude atmospheric circulation over East Asia-Pacific is studied using the P-vector method. It is showed that: (1) The STMW is of significant seasonal variation: its volume increases in spring, then gradually weaken in summer and autumn, and eventually shrank to the smallest in winter. It is also investigated that the significant seasonal variation of STMW is closely linked to the seasonal evolution of sea surface wind stress and net heat flux over the Northwestern Pacific, leading to a perfect reflection of the seasonal evolution of mid-high latitude atmospheric circulation