| 1961-2011 年渝东南地区降水变化特征分析 |
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| 引用本文： | 杨宝钢,;青吉铭,;张天宇,;谢世容,;马文杰.1961-2011 年渝东南地区降水变化特征分析[J].气象与环境学报,2014,30(3):46-51. |
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| 作者姓名： | 杨宝钢 ;青吉铭 ;张天宇 ;谢世容 ;马文杰 |
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| 作者单位： | 1. 重庆市江津区气象局，重庆402260 ；2.重庆市黔江区气象局，重庆 409000； 3.重庆市气候中心，重庆 401147 |
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| 基金项目： | 资助项目：重庆市气象局2012年重大科技项目“重庆市气象灾害图集”（Z201207）和重庆市气象局2010年重大科技项目“《重庆市气候业务技术手册》相关科学技术研究”（Z201002）共同资助. |
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| 摘 要： | 利用1961-2011年渝东南地区6个气象站的降水资料，分析了该地区的气候变化特征。结果表明：1961-2011年渝东南地区年、春季和秋季降水为线性减少趋势，秋季减少趋势显著；夏季和冬季降水为线性增加趋势，但不显著。年和四季降水的周期变化不太一致，年代际周期夏季和冬季降水比较显著。年雨日、小雨、中雨和大雨日数都为线性减少趋势，中雨和大雨日数减少趋势比较显著。暴雨日数整体上无明显变化。逐年代变化来看，雨日偏多最多的20世纪90年代表现为小雨和暴雨日数偏多，中雨和大雨日数偏少；雨日偏少最多的21世纪初期主要表现为小雨、大雨和暴雨日数偏少，中雨日数偏多。
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| 关 键 词： | 渝东南 降水 气候变化 |
Characteristics of precipitation change from 1961 to 2011 in southeast Chongqing |
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| YANG Bao-gang,Qing Ji-ming,ZHANG Tian-yu,XIE Shi-rong,MA Wen-jie.Characteristics of precipitation change from 1961 to 2011 in southeast Chongqing[J].Journal of Meteorology and Environment,2014,30(3):46-51. |
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| Authors: | YANG Bao-gang Qing Ji-ming ZHANG Tian-yu XIE Shi-rong MA Wen-jie |
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| Institution: | 1. Meteorological Service ofJiangjin District of Chongqing, Chongqing 409000, China; 2. Meteorological Service of Qianjiang District of Chongqing, Chongqing 402260, China; 3. Chongqing Climate Center, Chongqing 401147, China |
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| Abstract: | Based on the precipitation data from 6 weather stations in the southeast Chongqing from 1961 to 2011, the precipitation change characteristics were analyzed.The results show that the annual precipitation,spring and autumn precipitation are all in linear decreasing trends,especially for autumn precipitation.Summer and winter pre-cipitation is in linear increasing trends,but these trends are not significant.The cycles of annual and seasonal pre-cipitation are not same,and interdecadel cycles of summer and winter precipitation are significant.The days of an-nual rainfall,drizzle,moderate rain and heavy rain are in linear decreasing trends,especially for the last two varia-bles.There is not significant change for rainstorm days.For interdecadal change,the increasing number of rainy days mainly appears in 1990s which is mainly from the contribution of the drizzle and rainstorm days,while moderate rain and heavy rain days occur seldom during this period.Rainy days seldom appear in 2000 s,especially for drizzle,heavy rain and rainstorm,while moderate rain days are relatively high during this period. |
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| Keywords: | Southeast Chongqing Precipitation Climate change |
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