| 1964-2008年辽宁省旱涝时空分布特征及演变趋势 |
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| 引用本文： | 唐亚平,张凯,李忠娴,李岚,戴新童,严晓瑜.1964-2008年辽宁省旱涝时空分布特征及演变趋势[J].气象与环境学报,2011,27(2):50-55. |
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| 作者姓名： | 唐亚平 张凯 李忠娴 李岚 戴新童 严晓瑜 |
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| 作者单位： | 1.辽宁省气象科技服务中心,辽宁 沈阳 110016； 2.辽宁省防雷技术服务中心,辽宁 沈阳 110016；3.宁夏回族自治区气象服务中心,宁夏 银川 750000 |
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| 基金项目： | 公益性行业专项(GYHY20090627); 辽宁省气象局2010年科研课题“基于GIS的辽宁高速公路交通气象信息服务系统”共同资助 |
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| 摘 要： | 利用1964-2008年辽宁51站降水量资料,采用Z指数和区域旱涝HL指数分析了全区近45a旱涝变化.结果表明:近45 a辽西、辽北以及辽东南地区单站旱涝发生频率均明显高于辽中、辽东地区;区域性洪涝指数逐渐减小,区域性干旱指数逐步增大.对辽宁51站Z指数进行了EOF和REOF分析,可知辽宁旱涝的空间分布特征除受大尺度天...
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| 关 键 词： | 降水 旱涝 Z指数 EOF REOF |
| 收稿时间： | 2010-12-13 |
Temporal and spatial distributions of drought/flood and their evolution trends from 1964 to 2008 in Liaoning province |
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| TANG Ya-ping,ZHANG Kai,LI Zhong-xian,LI Lan,DAI Xin-tong,YAN Xiao-yu.Temporal and spatial distributions of drought/flood and their evolution trends from 1964 to 2008 in Liaoning province[J].Journal of Meteorology and Environment,2011,27(2):50-55. |
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| Authors: | TANG Ya-ping ZHANG Kai LI Zhong-xian LI Lan DAI Xin-tong YAN Xiao-yu |
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| Institution: | 1. Liaoning Meteorological Service Center of Science and Technology, Shenyang 110016, China; 2. Liaoning Lightning Protection Technology and Service Center, Shenyang 110016, China; 3. Ningxia Meteorological Service Center, Yinchuan 750000, China |
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| Abstract: | Based on the annual precipitation data from 51 weather stations from 1964 to 2008 in Liaoning province,the characteristics of drought and flood were analyzed with Z index for a single station and HL index for a region.The results indicate that the occurrence frequencies of drought and flood in a single station are higher in the western,northern and southeastern regions than in the middle and eastern regions of Liaoning province.The regional flood index decreases gradually,while the regional drought index in... |
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| Keywords: | Precipitation Flood/drought Z-index Empirical orthogonal function(EOF) Rotated empirical orthogonal function(REOF) |
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