| 亚洲季风环流在20世纪70年代末之后的减弱(英文) |
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| 引用本文： | 王会军.亚洲季风环流在20世纪70年代末之后的减弱(英文)[J].大气科学进展,2001(3). |
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| 作者姓名： | 王会军 |
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| 作者单位： | Wang Huijun Institute of Atmospheric Physics，Chinese Academy of Sciences，Beijing 100029 |
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| 基金项目： | the key project of Chinese Academy of Sciences under Contract
KZCX2-203 and the key program of the National Natural Science Fou |
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| 摘 要： | 全球大气环流自２０世纪７０年代末之后的转变可以很清楚地在大气温度、风场等的变化上得到发现。子波分析的结果证实这次转变的时间尺度在２０年以上。本文的研究着重揭示：在对流层中层，亚洲中纬度区域的转变趋势同全球平均的转变趋势相反；更重要的是，在这次转变之后亚洲和非洲的季风环流变弱了，同时热带东太平洋区的贸易风环流也变弱了。而在降水的变化中也可以发现这次转变。
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| 关 键 词： | 亚洲季风环流 减弱 转变 |
The Weakening of the Asian Monsoon Circulation after the End of 1970's |
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| Wang Huijun Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing.The Weakening of the Asian Monsoon Circulation after the End of 1970''''s[J].Advances in Atmospheric Sciences,2001(3). |
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| Authors: | Wang Huijun Institute of Atmospheric Physics Chinese Academy of Sciences Beijing |
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| Institution: | Wang Huijun Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029 |
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| Abstract: | 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. |
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| Keywords: | Asian monsoon circulation Weakening Transition |
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