The weakening of the Asian monsoon circulation after the end of 1970's
The weakening of the Asian monsoon circulation after the end of 1970's
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DOI：
10.1007/bf02919316
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发表时间：
2001-05
影响因子：
5.8
通讯作者：
Huijun Wang
中科院分区：
文献类型：
--
作者：
Huijun Wang
20世纪70年代末全球大气环流的转变在大气温度、风速等方面都有明显的表现，小波分析表明这种变化的时间尺度大于20年。研究表明，对流层中层某些变量在亚洲中纬度地区的转换趋势与全球平均相反。研究还发现，在这一转变之后，亚非季风环流减弱，热带东太平洋信风也减弱。这种信号在我国夏季降水中也可以找到。
The transition of the global atmospheric circulation in the end of 1970's can clearly be detected in the atmospheric temperature, wind velocity, and so on. Wavelet analysis reveals that the temporal scale of this change is larger than 20 years. Studies in this work indicate that the trend of the transition over the mid-latitude Asia is opposite to that of global average for some variables at the middle troposphere. Another finding of this research is that the African-Asian monsoon circulation is weaker and the trade wind over the tropical eastern Pacific is weaker as well after this transition. Such a signal may be found in the summer precipitation over China as well.