| 嘉兴市高温和夏季降水的气候特征分析 |
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| 引用本文： | 陈优平,余志豪,杨修群.嘉兴市高温和夏季降水的气候特征分析[J].气象科学,2005,25(2):118-123. |
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| 作者姓名： | 陈优平 余志豪 杨修群 |
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| 作者单位： | 1. 南京大学大气科学系,南京,210093;嘉兴市气象局,嘉兴314001
2. 南京大学大气科学系,南京,210093 |
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| 基金项目： | 国家自然科学重点基金项目(编号:4023-3028-26)资助 |
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| 摘 要： | 本文根据嘉兴市1953年～2003年逐年高温天数、夏季平均温度和夏季降水资料，分析了嘉兴近50a来的高温和夏季降水气候变化的统计特征，得出：本市夏季气候年际差异显著，年代际变化较明显。通过对资料作小波分析发现：高温和降水既有长期较稳定的年代际振荡，也存在有一定时限的高频振荡。将动态优势周期组合与实况进行对比，结果表明，极端气候事件往往发生在“特征值”高值附近且为几个不同周期振荡共同作用的结果。
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| 关 键 词： | 夏季 气候特征 统计分析 小波分析 |
| 收稿时间： | 2004/2/26 0:00:00 |
| 修稿时间： | 2004年2月26日 |
CLIMATE CHARACTERISTICS ANALYSIS OF HIGH TEMPERATURE AND SUMMER PRECIPITATION IN JIAXING CITY |
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| Chen Youping,Yu Zhihao and Yang Xiuqun.CLIMATE CHARACTERISTICS ANALYSIS OF HIGH TEMPERATURE AND SUMMER PRECIPITATION IN JIAXING CITY[J].Scientia Meteorologica Sinica,2005,25(2):118-123. |
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| Authors: | Chen Youping Yu Zhihao and Yang Xiuqun |
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| Abstract: | Statistical analysis and Morlet wavelet translation method have been used to analyze the number of annual high temperature days,summer average temperature and summer precipitation in Jiaxing city.The former shows the year-to-year difference is notable and decadal variety is also obvious.The latter deduces that high temperature and precipitation has both stable decadal change and high frequency oscillation.We compare combination of dynamic preponderant periods with real meteorological data ,and find that extreme climate events always occurred near the high eigenvalue and acted by several inter-period oscillation together. |
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| Keywords: | SummerClimate characteristicsStatistical analysisWavelet analysis |
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