摘要
运用ＥＣＭＷＦ的风场和高度场及ＴＢＢ资料，用相关方法对比分析了热带太平洋海温分布东冷西暖（１９８４～１９８５年冬季）和东暖西冷（１９８２～１９８３年冬季）两种不同背景下，热带西太平洋对流活动与中高纬环流在季内时间尺度下相互作用的特点。结果表明，不同的海温分布其对应的大尺度环流场包括Ｈａｄｌｅｙ和Ｗａｌｋｅｒ环流的位置及强弱均有较大的差别。冬季热带西太平洋对流活动与热带外大气的季内相互作用过程也有明显差异。
Using the wind field and geopotential height data from ECMWF and TBB from MRA of Japan, a comparison study with respective to the different distributions of SSTA in tropical Pacific is made on the characteristics of interaction between convective activity in tropical area and the circulation in extratropical region One of the cases is the winter of 1982～1983 with the SSTA of an El Nio year and another is 1984～1985, by contrast, with negative anomalies of SST at eastern tropical Pacific The results show that the position and intensity of both the different SSTA distritutions and the relative large scale circulation to these distributions including Hadley and Walker cells, are evidently different Furthermore, the processes of intraseasonal interaction between the convective activity in tropical western Pacific and the circulation in extratropic are obviously different
出处
《大气科学》
CSCD
北大核心
1998年第1期83-96,共14页
Chinese Journal of Atmospheric Sciences
关键词
海温异常
对流活动
相互作用
热带
大气环流
sea surface temperature anomaly convective activity tropical-extratropical interaction
