| 116 a长江中下游梅雨的气候特征 |
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| 引用本文： | 陈艺敏,钱永甫.116 a长江中下游梅雨的气候特征[J].南京气象学院学报,2004,27(1):65-72. |
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| 作者姓名： | 陈艺敏 钱永甫 |
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| 作者单位： | 南京大学,大气科学系,江苏,南京,210093 |
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| 基金项目： | 国家自然科学基金重点资助项目(40175021);国家自然科学基金重点资助项目(40233037) |
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| 摘 要： | 用EOF分解、聚类分析和相关分析法，对116a长江中下游5站逐年梅雨资料进行了检验。结果表明，用这5站的梅雨参数确实可以代表长江中下游梅雨的典型特征。根据梅雨量与候雨量的相关程度，分析了116a梅雨量集中的时段，对不同的梅雨参数用Morlet小波法分析了周期，找出了年际及年代际变化规律和趋势变化特征，并用滑动t检验法检验了是否发生突变。
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| 关 键 词： | 梅雨 气候特征 EOF分解 Morlet小波分析 滑动f检验 长江中下游地区 |
| 文章编号： | 1000-2022(2004)01-0065-08 |
Climatic Characteristics of 116-Year Mei-yu Rainfall in the Mid-lower Reaches of the Changjiang River |
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| CHEN Yi-min,QIAN Yong-fu.Climatic Characteristics of 116-Year Mei-yu Rainfall in the Mid-lower Reaches of the Changjiang River[J].Journal of Nanjing Institute of Meteorology,2004,27(1):65-72. |
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| Authors: | CHEN Yi-min QIAN Yong-fu |
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| Abstract: | Using EOF decomposition,cluster analysis and correlation analysis,116-year annual mei-yu data of five stations in the mid-lower reaches of the Changjiang river are examined.Results show that the five stations data can represent typical mei-yu characteristics in this region.According to the relation between mei-yu rainfall and pentad rainfall,the 116-year mei-yu rainfall-concentrated periods are analyzed.The four different mei-yu parameters' periods are analyzed by Morlet wavelet analysis.Laws of interannual and interdecadal variations and characteristics of trends are found.Climatic jumps are tested by the moving t-test. |
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| Keywords: | mei-yu EOF decomposition Morlet wavelet analysis moving t-test |
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