| COMBINATION OF ECMWF REANALYZED DAILY RAINFALL AND PENTAD CMAP IN CHINA |
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| 作者姓名： | 崔茂常 朱海 |
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| 作者单位： | [1]InstituteofOceanology,ChineseAcademyofSciences,Qingdao266071,China [2]InstituteofAtmosphericPhysics,ChineseAcademyofSciences,Beifing100029,China |
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| 基金项目： | roject4 98750 2 0supportedbyNSFC andalsosupportedbythemajorstatebasicresearchprogram (No .G1 9990 4 3 80 3 ) ChineseAcademyofSci |
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| 摘 要： | In this study, 16 combinations of the ECMWF (European Centre for Medium-Range Weather Forecast) reanalyzed daily rainfall and the pentad CMAP in China for the period 1980- 1993( 1May - 31 Dec. ) were calculated. Correlation analysis was used to roughly evaluate daily rainfall for the whole of China and a combination of RPC (rotated principal component) and wavelet analyses was applied to data on observed and combined daily rainfall to obtain a detailed evaluation of the quality of these combined datasets in 6 selected major rainfall regions of eastern China. The results showed that except for intraweekly fluctuation, the best combination was roughly similar to or accorded well with observation in the aspects of space variation patterns and long period rainfall fluctuations related to monsoon onset and serious meteorologic disasters, indicating that this combination yielded better values of long term daily mean and standard deviation through the pentad CMAP ( CPC Merged Analysis of Precipitation), and can also represent rainfall fluctuations through the reanalyzed daily rainfall.
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| 关 键 词： | 日降雨量 估计 小波分析 相关性 |
| 收稿时间： | 25 May 1999 |
| 修稿时间： | 20 August 2000 |
Combination of ECMWF reanalyzed daily rainfall and pentad CMAP in China |
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| Cui Mao-chang,Zhu Hai.COMBINATION OF ECMWF REANALYZED DAILY RAINFALL AND PENTAD CMAP IN CHINA[J].Chinese Journal of Oceanology and Limnology,2001,19(3):200-207. |
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| Authors: | Cui Mao-chang Zhu Hai |
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| Institution: | (1) Institute of Oceanology, Chinese Academy of Sciences, 266071 Qingdao, China;(2) LASC, Institute of Atmospheric Physics, Chinese Academy of Sciences, 100029 Beijing, China |
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| Abstract: | In this study, 16 combinations of the ECMWF (European Centre for Medium Range Weather Forecast) reanalyzed daily rainfall and the pentad CMAP in China for the period 1980-1993(1 May-31 Dec.) were calculated. Correlation analysis was used to roughly evaluate daily rainfall for the whole of China and a combination of RPC (rotated principal component) and wavelet analyses was applied to data on observed and combined daily rainfall to obtain a detailed evaluation of the quality of these combined datasets in 6 selected major rainfall regions of eastern China. The results showed that except for intraweekly fluctuation, the best combination was roughly similar to or accorded well with observation in the aspects of space variation patterns and long period rainfall fluctuations related to monsoon onset and serious meteorologic disasters, indicating that this combination yielded better values of long term daily mean and standard deviation through the pentad CMAP (CPC Merged Analysis of Precipitation), and can also represent rainfall fluctuations through the reanalyzed daily rainfall. |
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| Keywords: | data combination daily rainfall in China ECMWF reanalysis pentad CMAP |
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