| 江淮梅雨期最低气温的气候特征分析 |
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| 引用本文： | 李如琦,王谦谦.江淮梅雨期最低气温的气候特征分析[J].气象科学,2006,26(2):164-170. |
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| 作者姓名： | 李如琦 王谦谦 |
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| 作者单位： | 1. 南京信息工程大学大气科学系,南京,210044;新疆环境气象中心,乌鲁木齐,830002
2. 南京信息工程大学大气科学系,南京,210044 |
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| 摘 要： | 利用江淮地区70个测站1961~2001年历年6月第2侯至7月第2侯最低气温资料,采用旋转经验正交展开(REOF)方法对江淮地区梅雨期最低气温场进行客观分区,并分析了各区域最低气温的长期演变趋势。结果表明:江淮地区梅雨期最低气温场可分为3个区域,各区域的最低气温均具有明显的年际、年代际变化特征,且存在着显著差异,其中东北区明显上升,而南方区和西北区呈降低趋势;各区域存在明显不同的年际、年代际方差构成、突变特征和多尺度振荡周期。
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| 关 键 词： | 旋转经验正交展开 江淮地区 梅雨期 最低气温 长期演变趋势 |
| 收稿时间： | 2005-01-03 |
| 修稿时间： | 2005-05-08 |
ANALYSIS OF CLIMATE FEATURES OF CHANGJIANG-HUAIHE AREA'S MINIMUM TEMPERATURE IN MEIYU PERIOD |
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| Li Ruqi and Wang Qianqian.ANALYSIS OF CLIMATE FEATURES OF CHANGJIANG-HUAIHE AREA''S MINIMUM TEMPERATURE IN MEIYU PERIOD[J].Scientia Meteorologica Sinica,2006,26(2):164-170. |
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| Authors: | Li Ruqi and Wang Qianqian |
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| Institution: | 1.Department of Atmospheric Sciences, NUIST, Nanjing 210044 ;2. Xinjiang Center of Environmental Meteorology ,Urumqi 830002 |
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| Abstract: | Using minimum temperature data from the second pentad in June to the second pentad in July at 70 observational stations from 1961 to 2001,the Changjiang-Huaihe area's minimum temperature field in Meiyu period is divided objectively into 3 regions by rotated empirical orthogonal function(REOF) method.Based on this,the long-term trend of each region minimum temperature in Meiyu period is analyzed.Results indicate that the minimum temperature field in 3 regions has distinct characteristics of interdecadal change in the recent 41 years,and there is obvious area difference: the long-term trend of minimum temperature went up markedly in northeast area,descended in south area and northwest area.The interannual(interdecadal) variance contribution,catastrophe feature and variation period in 3 regions exhibit remarkable diversity. |
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| Keywords: | Rotated empirical orthogonal function Changjiang-Huaihe area Meiyu period Minimum temperature Long-term trend |
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