Monsoon Circulation Related to ENSO Phase-Locking

作     者：徐建军 朱乾根 周铁汉 

作者机构：LASG Institute of Atmospheric Physics Chinese Academy of Sciences Beijing Nanjing Institute of Meteorology Nanjing 

出 版 物：《Advances in Atmospheric Sciences》 (大气科学进展（英文版）)

年 卷 期：1998年第15卷第2期

页      面：134-143页

核心收录：

学科分类：07[理学] 070601[理学-气象学] 0706[理学-大气科学] 

基　　金：国家自然科学基金 

主　　题：Monsoon heating Walker heating ENSO cycle Phase locking 

摘      要：The relation of interannual anomaly of East Asian monsoon to the ENSO cycle is investigated in terms of even and odd symmetry analysis over a tropical heating field based on the past 30-year data. Evidence suggests that odd and even symmetry components related to the monsoon and Walker heating, respectively, effectively describe the East Asian monsoon circulation and Pacific Walker analog, with the monsoon intensity index corresponding to its heating vigor and western Pacific Walker heating vigor to ENSO phase change, both types of heating marked by pronounced seasonal variation and phase-locking; the key region for linking monsoon-ENSO interaction is the western Pacific warm pool; the monsoon effect upon ENSO cycle is affected jointly by the seasonal evolution and interannual anomaly of the heating components; the superimposition of an anti-Walker circulation phase produced by interannual winter monsoon perturbation upon a weaker Walker phase on a seasonal basis leads to an El Nino happening in March-April and plays a significant role in maintaining a warm ENSO phase.