摘要
利用NCEP再分析的海表温度场、风场、高度场的格点资料,应用合成和相关分析等方法,初步探讨了热带印度洋和热带太平洋海温异常与南海夏季风建立的关系。研究结果表明,热带印度洋和热带太平洋海温异常在有些年份并不同号,从而对南海夏季风建立迟早的影响并不完全一致。进一步分析表明,热带印度洋和热带太平洋海温异常可能是通过影响热带地区Walker环流建立和加强,进而南海夏季风建立的迟早。
Using the NCEP reanalysis data from 1949 to 1998, the relationship between the SSTA over tropical oceans and the onset of South China Sea summer monsoon (SCSSM) was investigated based on composite analysis and correlation analysis. The results show that there exist close relationships between the onset of SCSSM and the SSTA over tropical oceans. In some years the symbol of SSTA in tropical central and eastern Pacific ocean is not the same as that over tropical Indian ocean, therefore the influence of SSTA over the two oceans on onset of SCSSM are different. Moreover,it is speculated that by having an impact on the vertical circulations (Walker and Anti_Walker) the SSTA over tropical oceans affects the onset time of SCSSM.
出处
《中山大学学报（自然科学版）》
CAS
CSCD
北大核心
2005年第1期94-98,共5页
Acta Scientiarum Naturalium Universitatis Sunyatseni
基金
国家自然科学基金资助项目(40275026)
中国科学院大气科学和地球流体力学数值模拟国家重点实验室(LASG)开放课题资助项目
关键词
南海夏季风
海温异常
建立迟早
South China Sea summer monsoon
sea surface temperature
onset time
