| 长江中上游降水空间分析的SIA方法 |
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| 引用本文： | 周锁铨,薛根元,宫鹏,Chen Jingming,Zhang Hongping,Zhou Zhijiang,Fan Xiong,DENG Xiaochun,WU Zhanping.长江中上游降水空间分析的SIA方法[J].地理学报(英文版),2005,15(2):223-238. |
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| 作者姓名： | 周锁铨 薛根元 宫鹏 Chen Jingming Zhang Hongping Zhou Zhijiang Fan Xiong DENG Xiaochun WU Zhanping |
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| 作者单位： | 1.Key Lab of Meteorological Calamity，Nanjing Inst.of Meteorology，Nanjing 210044，China;2.Meteorological Bureau of Zhejiang Province，Hangzhou 310002，China;3.The Earth Science System Institute，Nanjing University，Nanjing 210093，China;4.Meteorological Bureau of Shaanxi Province，Xi'an 710015，China;5.Climate Research Centre，China Meteorological Administration，Beijing 100081，China;6.Meteorological Bureau of Sichuan Province，Chengdu 610001，China;7.Meteorological Bureau of Hunan Province，Changsha 410001，China;8.Meteorological Bureau of Guizhou Province，Guiyang 550001，China |
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| 基金项目： | 国家重点基础研究发展计划(973计划);国家自然科学基金 |
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| 摘 要： | 1 IntroductionW ith the developm ent of geoscience and interdisciplinary sciences, the precipitation data ofhigher resolution are dem anded by m any studies, especially by the study on the interactionbetw een terrestrial biosphere and atm osphere,and hydr…
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| 关 键 词： | 扬子江 上中游地区 降水量 空间分布 逐次插值逼近 |
| 收稿时间： | 4 November 2004 |
The SIA method for spatial analysis of precipitation in the upper-middle reaches of the Yangtze River |
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| Suoquan Zhou,Genyuan Xue,Peng Gong,Jingming Chen,Hongping Zhang,Zhijiang Zhou,Xiong Fan,Xiaochun Deng,Zhanping Wu.The SIA method for spatial analysis of precipitation in the upper-middle reaches of the Yangtze River[J].Journal of Geographical Sciences,2005,15(2):223-238. |
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| Authors: | Suoquan Zhou Genyuan Xue Peng Gong Jingming Chen Hongping Zhang Zhijiang Zhou Xiong Fan Xiaochun Deng Zhanping Wu |
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| Institution: | Key Lab of Meteorological Calamity, Nanjing Inst.of Meteorology, Nanjing 210044, China;Key Lab of Meteorological Calamity, Nanjing Inst.of Meteorology, Nanjing 210044, China;Meteorological Bureau of Zhejiang Province, Hangzhou 310002,China;The Earth Science System Institute, Nanjing University, Nanjing 210093, China;Meteorological Bureau of Shaanxi Province, Xi'an 710015, China;Climate Research Centre, China Meteorological Administration, Beijing 100081, China;Meteorological Bureau of Sichuan Province, Chengdu 610001, China;Meteorological Bureau of Hunan Province, Changsha 410001, China;Meteorological Bureau of Guizhou Province, Guiyang 550001, China |
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| Abstract: | Using geographic information system (GIS) techniques and the newest seasonal and annual average precipitation data of 679 meteorological stations from 1971 to 2000, the multiple regressions equations of the precipitation and topographical variables are established to extract the effect of topography on the annual and seasonal precipitation in the upper-middle reaches of the Yangtze River. Then, this paper uses a successive interpolation approach (SIA), which combines GIS techniques with the multiple regressions, to improve the accuracy of the spatial interpolation of annual and seasonal rainfall. The results are very satisfactory in the case of seasonal rainfall, with the relative error of 6.86%, the absolute error of 13.07 mm, the average coefficient of variation of 0.070, and the correlation coefficient of 0.9675; in the case of annual precipitation, with the relative error of 7.34%, the absolute error of 72.1 mm, the average coefficient of variation of 0.092, and the correlation coefficient of 0.9605. The analyses of annual mean precipitation show that the SIA calculation of 3-5 steps considerably improves the interpolation accuracy, decreasing the absolute error from 211.0 mm to 62.4 mm, the relative error from 20.74% to 5.97%, the coefficient of variation from 0.2312 to 0.0761, and increasing the correlation coefficient from 0.5467 to 0.9619. The SIA iterative results after 50 steps identically converge to the observed precipitation. |
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| Keywords: | the upper-middle reaches of the Yangtze River precipitation resource spatial analysis successive interpolation approach (SIA) |
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