The onset and advance of the Asian summer monsoon  

作　　者：Lü Junmei ZHANG Qingyun TAO Shiyan JU Jianhua 

机构地区：[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]Department of Atmospheric Sciences, Yunnan University, Kunming 650091, China [3]China Meteorological Administration Training Centre, Beijing 100081, China [4]Graduate School of Chinese Academy of Sciences, Beijing 100039, China

出　　处：《Chinese Science Bulletin》2006年第1期80-88,共9页

基　　金：supported by the Innovation Project of the Chinese Academy of Sciences(Grant No.KZCX3-SW-221);the National Natural Science Foundation of China(Grant Nos.40233033 and 40365001).

摘　　要：Based on the daily outgoing longwave radiation (OLR) data from National Oceanic and At- mospheric Administration (NOAA) satellites, the Cli- mate Prediction Center’s merged analysis of pre- cipitation (CMAP) data and the National Centers for Environmental Prediction/National Center for At- mospheric Research (NCEP/NCAR) reanalysis dataset, the mean intraseasonal variability of the Asian summer monsoon (ASM) is investigated by using power spectrum analysis, band-pass filter, and diagnostic analyses. The processes of the onset and advance of monsoon over the southern part of Indo- china Peninsula, the east coast of Bay of Bengal, the South China Sea and the Indian subcontinent are explored. It is found that there is an abrupt change in OLR, precipitation and zonal wind during the onset and advance of the ASM. It is also indicated that the southern part of Indochina Peninsula and the adja- cent Andaman Sea is the region where the earliest onset of the ASM occurs in the 2nd pentad of May.Based on the daily outgoing Iongwave radiation （OLR） data from National Oceanic and Atmospheric Administration （NOAA） satellites, the Cli- mate Prediction Center＇s merged analysis of precipitation （CMAP） data and the National Centers for Environmental Prediction/National Center for Atmospheric Research （NCEP/NCAR） reanalysis dataset, the mean intraseasonal variability of the Asian summer monsoon （ASM） is investigated by using power spectrum analysis, band-pass filter, and diagnostic analyses. The processes of the onset and advance of monsoon over the southern part of Indochina Peninsula, the east coast of Bay of Bengal, the South China Sea and the Indian subcontinent are explored. It is found that there is an abrupt change in OLR, precipitation and zonal wind during the onset and advance of the ASM. It is also indicated that the southern part of Indochina Peninsula and the adjacent Andaman Sea is the region where the earliest onset of the ASM occurs in the 2nd pentad of May.

关 键 词：亚洲 季风 夏季 NOAA OLR 

分 类 号：P425.4[天文地球—大气科学及气象学]