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南海夏季风活动及其影响
引用本文:李崇银,张利平.南海夏季风活动及其影响[J].大气科学,1999,23(3):257-266.
作者姓名:李崇银  张利平
作者单位: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
基金项目:本研究得到国家攀登计划“南海季风试验研究”和中国科学院KZ951-B1-408项目共同资助
摘    要:资料分析及其同南亚(印度)夏季风的比较,指出建立的突发性和经向分量的重要性是南海夏季风活动的两个最基本特征。根据南海夏季风经向分量与纬向分量同样重要的特征,并考虑南海地区大气环流的基本形势,提出了用对流层高低层散度差构成季风指数,它可以更好地描写南海夏季风的活动。资料分析和大气环流模式(GCM)数值模拟试验都清楚地表明南海夏季风年际异常对大气环流和气候有极为重要的影响,不仅影响东亚地区,而且通过东亚-太平洋-美洲(PJ或称EPA)波列影响美国的天气气候变化。

关 键 词:南海    夏季风    季风指数    EPA(PJ)波列

Summer Monsoon Activities in the South China Sea and Its Impacts
Li Chongyin and Zhang Liping.Summer Monsoon Activities in the South China Sea and Its Impacts[J].Chinese Journal of Atmospheric Sciences,1999,23(3):257-266.
Authors:Li Chongyin and Zhang Liping
Abstract:Through data analyses and comparison with the South Asian (Indian) monsoon, thesuddenality of the onset and the importance of meridional component are indicated as the fundamentalfeatures of summer monsoon activity in the South China Sea in this paper. It is still shown that the divergence difference between the upper and lower troposphere as a monsoon index is more advantageousto represent the monsoon activities in the South China Sea. The data analyses and GCM numericalsimulations showed that interannual anomaly of the summer monsoon in the South China Sea has important effect on the atmospheric circulation and climate in East Asia, and the summer monsoon anomaly in the South China Sea can still affect the atmospheric circulation and climate in the Northern Pacific and North America regions through the EPA wave train.
Keywords:South China Sea  summer monsoon  monsoon index  East Asia-Pacific America (EPA) wavetrain
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