| 青海省近40年雨日、雨强气候变化特征 |
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| 引用本文： | 汪青春,李林,刘蓓,秦宁生,朱尽文.青海省近40年雨日、雨强气候变化特征[J].气象,2005,31(3):69-72. |
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| 作者姓名： | 汪青春 李林 刘蓓 秦宁生 朱尽文 |
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| 作者单位： | 青海省气候资料中心,西宁,810001 |
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| 摘 要： | 利用青海省1961-2002年26个代表站逐日雨量资料和青海省东部地区10个站1981～2001年降水自记资料，分析近40年来青海省雨日、雨强气候变化。结果表明：青海近年来虽然夏半年降水量和雨日在减少，但降水强度在增大。夏半年降水量的减少主要是降水日数的减少造成的；而冬半年降水量的明显增加是由于雨日增多和每个降水日平均雨量的增大造成的。近20年来10分钟、1小时最大降水的强度在明显增加。同时，20世纪90年代夜间出现强降水的几率多于80年代。
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| 关 键 词： | 青海 雨日 强降水 气候变化 资料统计 气候变化 |
Climate Variational Characteristics of Rain Day and Rain Intensity for the Last 40 Years in Qinghai Province |
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| Wang Qingchun,Li Lin,Liu Pei,Qin Ningsheng,Zhu Jinwen.Climate Variational Characteristics of Rain Day and Rain Intensity for the Last 40 Years in Qinghai Province[J].Meteorological Monthly,2005,31(3):69-72. |
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| Authors: | Wang Qingchun Li Lin Liu Pei Qin Ningsheng Zhu Jinwen |
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| Abstract: | Based on the daily rainfall data of 26 stations in 1961-2002 and the precipitation data of 10 stations in 1981-2001 in eastern Qinghai province, the climatic variation characteristics of rain day and rain intensity are analyzed. The result shows that the rain intensity is increasing with the decreasing of rain day and rainfall in summer season, the decreasing of rainfall in summer season is mainly associated with the decreasing of rain day, while the increasing of rainfall in winter season is due to the increasing of snow day and daily average rainfall. In recent 20 years, the maximum precipitation intensity in 10 minutes and an hour increases significantly. The frequency of heavy rainfall at nighttime in the 1990s is much more than that in the 1980s. |
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| Keywords: | rain day rain intensity climatic variation |
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