| MULTI-SCALE ANALYSES OF SURFACE AIR TEMPERATURE VARIATIONS FOR THE NORTHERN HEMISPHERE AND CHINA DURING THE LAST ONE HUNDRED YEARS |
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| 作者姓名： | 尤卫红 林振山 |
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| 作者单位： | Department of Atmospheric Science Nanjing University，Nanjing 210093，Department of Atmospheric Science，Nanjing University，Nanjing 210093 |
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| 基金项目： | Supported by the project of the NKPFR and the Application Fundamental Research Funds of Yunnan Province. |
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| 摘 要： | Using multi-resolution theory of wavelet analysis,this paper studies the multi-scale structureof surface air temperature variations for the Northern Hemisphere and China during the last onehundred years.The results show that the climatic variations for the Northern Hemisphere can bedescribed as 3 hierarchies corresponding to the larger-scale changes.They are the cold period be-fore 1919,the warm period from 1920 to 1978 and the warmer period after 1979.The larger-scalehierarchical changes obviously show qualities of climate jump.The years 1920 and 1979 are thejump points of climate change.The surface air temperature variations for China are not entirelyanalogous to the Northern Hemisphere,and the main contrasts are that China is in the cold periodafter 1955 and the jump point of warming is 1987.The surface air temperature variations for theNorthern Hemisphere and China during the last one hundred years obviously show the hierarchicalstructure of multi-scale changes and the qualities of climate jump.
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MULTI-SCALE ANALYSES OF SURFACE AIR TEMPERATURE VARIATIONS FOR THE NORTHERN HEMISPHERE AND CHINA DURING THE LAST ONE HUNDRED YEARS |
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| You Weihong Lin Zhenshan.MULTI-SCALE ANALYSES OF SURFACE AIR TEMPERATURE VARIATIONS FOR THE NORTHERN HEMISPHERE AND CHINA DURING THE LAST ONE HUNDRED YEARS[J].Acta Meteorologica Sinica,1996(2). |
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| Authors: | You Weihong Lin Zhenshan |
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| Institution: | You Weihong Lin Zhenshan Department of Atmospheric Science,Nanjing University,Nanjing 210093 |
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| Abstract: | Using multi-resolution theory of wavelet analysis,this paper studies the multi-scale structure of surface air temperature variations for the Northern Hemisphere and China during the last one hundred years.The results show that the climatic variations for the Northern Hemisphere can be described as 3 hierarchies corresponding to the larger-scale changes.They are the cold period be- fore 1919,the warm period from 1920 to 1978 and the warmer period after 1979.The larger-scale hierarchical changes obviously show qualities of climate jump.The years 1920 and 1979 are the jump points of climate change.The surface air temperature variations for China are not entirely analogous to the Northern Hemisphere,and the main contrasts are that China is in the cold period after 1955 and the jump point of warming is 1987.The surface air temperature variations for the Northern Hemisphere and China during the last one hundred years obviously show the hierarchical structure of multi-scale changes and the qualities of climate jump. |
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| Keywords: | multi-scale analysis hierarchical structure climate jump |
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