南海夏季风建立的数值模拟试验  

Numerical Model Experiment on the Onset of the Summer Monsoon over the South China Sea

作　　者：杨辉[1] 

机构地区：[1]中国科学院大气物理研究所,北京100029

出　　处：《计算物理》2003年第5期455-457,共3页Chinese Journal of Computational Physics

基　　金：中国科学院知识创新工程重要方向项目(ZKCX2-SW-210);国家重点基础研究发展规划(G1998040900);优秀国家重点实验室研究项目(40023001)资助项目

摘　　要：　利用中国科学院大气物理研究所全球谱模式(T42L9)对南海夏季风建立的过程进行了数值模拟试验.试验结果表明:通过青藏高原的动力作用和东南亚地区强大的潜热加热产生印度洋上跨赤道的偏南辐散风、高原南侧的偏西辐散风、高原东侧的偏北辐散风和西太平洋上的偏东辐散风,这4支散度流加强南海海域大尺度低空辐合,南海的雨季和西南季风爆发.The onset of the summer monsoon over the South China Sea is studied by the global spectral model(T42L9) of the Institute of Atmospheric Physics. The onset of the summer monsoon over the South China Sea is closely related to the intense convergence at 850?hPa over the South China Sea, which is constituted by the crossequatorial southerly divergent wind over the eastern Indian, the westerly divergent wind along the southern flank of the Tibetan Plateau, the northerly divergent wind along the eastern periphery of the Plateau, and the easterly divergent wind of the Western Pacific. Various sensitive numerical model experiments show that latent heating of the Southeast Asia and the dynamic effects of the Tibetan Plateau are both very important to those four divergent airstreams and that convergence.

关 键 词：南海 夏季风 数值模拟试验 青藏高原 动力作用 地形作用 潜热加热 东南亚地区 

分 类 号：P435.2[天文地球—大气科学及气象学] P463.212