冬季西太平洋暖池区Hadley环流年际变化特征及其与热带海温的关系  

Interannual Variations of Boreal Winter Hadley Circulation in West-Pacific Warm Pool Region(WPWP)and Its Relationship with Equatorial SST

作　　者：冀建树[1,2] 陈昌吉[1,3,4] 王功录[1,2] 

机构地区：[1]中国海洋大学海洋环境学院 [2]中国海洋大学海洋-大气相互作用与气候实验室 [3]中国人民解放军92313部队气象台 [4]中国海洋大学物理海洋实验室

出　　处：《现代农业科技》2013年第9期247-250,共4页Modern Agricultural Science and Technology

摘　　要：暖池尤其是西太平洋暖池是全球对流活动最频繁的地区，是驱动Hadley环流和Walker环流的主要热源以及引发ENSO等一系列海气相互作用的关键因素。近年来关于暖池的研究成为一个热点。应用NCEP／NCAR再分析资料中的速度势月平均资料和英国哈德莱中心海温资料。采用质量流函数法并结合经验正交函数分解、合成分析、相关分析、谐波分析等方法。分析研究了1952—2009年西太平洋暖池区域东经120°-160° Hadley环流的年际变化特征及其与海温的关系。结果表明：西太平洋暖池区冬季气候态Hadley环流偏南，北支占主导地位。冬季西太平洋暖池区Hadley环流具有明显的年际变化特征，年代际特征不明显；冬季西太平洋暖池区Hadley环流的年际变化与太平洋、印度洋的海温异常有关．但其主要受ENSO信号的影响。Warm pool,especially West-Pacific Warm Pool region is the most active region in the world,it＇s the main heat producer of Hadley Circulation and Walker Circulation and key factor of air-sea interactions like ENSO.Recently,it has been a hotspot.Monthly velocity potential reanalysis data of NCEP/NCAR from 1952 to 2009 and SST data from Hadley Circulation of 120°-160°E were used to discuss interannual variations of Hadley Circulation in West-Pacific Warm Pool region and its relationship with equatorial SST.MSF （mass stream function ）combined with EOF （empirical orthogonal function）,composite analysis ,correlation analysis and harmonic analysis were used in this paper.Main results are as follows： Hadley Circulation is southwardly in boreal winter and it＇s northern branch is more intensive;it has obvious interannual variations of boreal winter Hadley Circulation,however,it＇s interdecadal variations are not obvious;interannual variations of Hadley Circulation of WPWP region in winter are associated with the Pacific and Indian Ocean SST anomaly ,but it is mainly affected by ENSO.

关 键 词：HADLEY环流 年际变化 热带海温 关系 西太平洋暖池 冬季 

分 类 号：P434[天文地球—大气科学及气象学]