| 我国旬降水年变化特征的区域分布 |
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| 引用本文： | 王小玲,屠其璞.我国旬降水年变化特征的区域分布[J].南京气象学院学报,2002,25(4):518-524. |
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| 作者姓名： | 王小玲 屠其璞 |
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| 作者单位： | 南京气象学院,资源环境与城乡规划系,江苏,南京,210044 |
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| 基金项目： | “九·五”攻关项目 96 - 90 8- 0 1- 0 1- 1 |
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| 摘 要： | 利用全国多年平均旬降水资料，通过旋转EOF分解，将全国各地旬降水的年变化特征划分为6大类别，在地理分布上归属为8个区域，各区域的降水除了夏季多，冬季少的共同特征外，还有其地域性特点。各区域特征时段降水量间的显著统计相关有一定的中期天气预报意义。各区域特征时段降水量和年降水量近44a来有不同的趋势变化，部分区域可用特征时段的降水变化特征表示年降水的变化特征。
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| 关 键 词： | 旬降水年变化 区域分布 旋转EOF 特征时段 中国 降水资料 |
| 文章编号： | 1000-2022(2002)04-0518-07 |
| 修稿时间： | 2001年10月26 |
Regional Distribution of Annual Variations of Dekad Precipitation in China |
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| WANG Xiao-ling,TU Qi-pu.Regional Distribution of Annual Variations of Dekad Precipitation in China[J].Journal of Nanjing Institute of Meteorology,2002,25(4):518-524. |
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| Authors: | WANG Xiao-ling TU Qi-pu |
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| Abstract: | Using Rotated Empirical Orthogonal Function (REOF) to analyze the annual variations of China dekad precipitation based on dekad precipitation data averaged over 1955-1998,the annual variations of the precipitation are divided into 6 categories which cover 8 regions geographically.The precipitation in each region is of regional characteristics,besides the common feature of more in summer and less in winter.The significant correlations between the precipitation in characteristic periods of time in different regions are considerable factors for mid- and long- term weather forecast.In recent 44 years,the trends of the precipitation in characteristic periods of time and annual precipitation in various regions are changing differently,but in some regions,the trend of the precipitation in characteristic period of time can respect that of annual precipitation. |
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| Keywords: | REOF typical dekad precipitation characteristic period of time |
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