| 1960-2009年塔里木河流域降水时空演化特征及原因分析 |
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| 引用本文： | 吴永萍,王澄海,沈永平.1960-2009年塔里木河流域降水时空演化特征及原因分析[J].冰川冻土,2011,33(6):1268-1273. |
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| 作者姓名： | 吴永萍 王澄海 沈永平 |
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| 作者单位： | 扬州大学物理科学与技术学院,江苏扬州,225002;兰州大学大气科学学院,甘肃兰州,730000;中国科学院寒区旱区环境与工程研究所,甘肃兰州,730000 |
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| 基金项目： | 全球变化研究国家重大科学研究计划项目(2010CB951404;SQ2011CC066953);科技部“十一五”科技计划项目(2009BAC51B04-5);国家自然科学基金青年基金项目(41105033)资助 |
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| 摘 要： | 利用1960-2009年新疆塔里木河流域（TRB）26个气象站的日降水资料以及美国NCEP/NCAR的逐月再分析资料（2.5°×2.5°）,对塔里木河流域降水的时空分布特征及其原因进行了分析.结果表明：塔里木河流域降水总体上呈现由东南向西北逐渐增加的分布形态,但不同季节之间以及降水量多年和少年之间存在差异,这与水汽输送...
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| 关 键 词： | 降水 时空演化 水汽输送 局地水循环 塔里木河流域 |
Spatiotemporal Evolution of Precipitation over Tarim River Basin during 1960-2009:Characteristics and Reasons |
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| WU Yong-ping,WANG Cheng-hai,SHEN Yong-ping.Spatiotemporal Evolution of Precipitation over Tarim River Basin during 1960-2009:Characteristics and Reasons[J].Journal of Glaciology and Geocryology,2011,33(6):1268-1273. |
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| Authors: | WU Yong-ping WANG Cheng-hai SHEN Yong-ping |
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| Institution: | 1.College of Physics Science and Technology,Yangzhou University,Yangzhou Jiangsu 225002,China;2.College of Atmospheric Sciences,Lanzhou University,Lanzhou Gansu 730000,China;3.Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou Gansu 730000,China) |
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| Abstract: | Using U.S.NCEP / NCAR monthly mean reanalysis data(2.5°×2.5°) and daily precipitation data at 26 weather stations in the Tarim River basin(TRB) from 1960 to 2009,spatiotemporal evolution characteristics of precipitation over the basin were analyzed.It is found that: 1) the spatial distribution of precipitation in the basin shows a gradual increase trend from southeast to northwest with some variation in different seasons and between the wet(dry) years;2) the annual changes in precipitation are consistent in mountains and plains,however,during the period from 1978 to 2003,when global warming was most intensive,precipitation over mountains showed an pronounced increasing trend,and so did the horizontal water vapor net input;while the precipitation over plain and vertical water vapor flux over Tarim showed a consistent decreasing trend.It is believed that the complexity of spatiotemporal distribution of precipitation over the basin implies a variety of precipitation mechanisms,and the warm and wet evidence in western Tianshan Mountains may be the signal of global warming accelerating the local water cycle. |
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| Keywords: | precipitation spatiotemporal evolution local water vapor Tarim River basin |
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