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| 云南雷暴的气候变化特征 | |
| 引用本文： | 罗庆仙,王学锋. 云南雷暴的气候变化特征[J]. 云南大学学报(自然科学版), 2009, 31(2): 159-164 |
| 作者姓名： | 罗庆仙 王学锋 |
| 作者单位： | 1. 普洱市气象局, 云南 普洱, 665000; 2. 云南大学, 大气科学系, 云南 昆明, 650091; 3. 云南省气候中心, 云南 昆明650034 |
| 摘 要： | 利用云南113个常规气象站1961～2006年雷暴日数资料,采用旋转经验正交展开方法将云南划分为6个气候区域,并在此基础上对雷暴日数进行时空变化分析.结果表明:云南省雷暴自1961年以来呈现显著减少的趋势,且在1980s发生过一次显著减少的突变.从地域分布上看,各个区域的雷暴均呈减少趋势,其中以南部和西南部减少最显著.雷暴初日、终日均有提早趋势,而间隔日数则有加长的趋势,但均不能达到统计学意义上的显著水平. |
| 关 键 词： | 云南省 雷暴 时空变化 |
| 收稿时间： | 2008-06-05 |
Climate change of thunderstorm in Yunnan Province |
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| LUO Qing-xian,WANG Xue-feng. Climate change of thunderstorm in Yunnan Province[J]. Journal of Yunnan University(Natural Sciences), 2009, 31(2): 159-164 | |
| Authors: | LUO Qing-xian WANG Xue-feng |
| Affiliation: | 1. Meteorological Bureau of Pu′er, Pu′er, 665000, China; 2. Department of Atmospheric Science, Yunnan University, Kuming 650091, China; 3. Yunnan Climate Center, Kunming, 650034, China |
| Abstract: | By using the method of rotated empirical orthogonal function(REOF) and according to thunderstorm days data of 113 routine meteorological stations,Yunnan Province is partitioned into six regions and its spatial-temporal variation is analyzed.The results showed that the thunderstorm days in Yunnan Province had a descending trend during1961—2006,and thunderstorm days took place an abrupt occurred in1980s.For spatial-variation,all of various regions had descending trend,especially in Southern &; Southwestern Yunnan.Initial/ending dates of thunderstorm had ahead trends and the number of days between two dates had an increasingly trend,but don't attain marked levels of statistics. |
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