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2008, 03, No.26 75-80
重庆地区日降水气候分析
基金项目(Foundation): 重庆市气象局项目(200703)
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摘要:

利用重庆地区4个气象台站(沙坪坝、开县、万州、酉阳)1961~2000年的40 a观测资料,通过计算、拟合日降水的数学期望、变差系数及分布函数,对重庆地区日降水变化趋势及变化特征进行分析,从而进一步了解重庆气候变化情况.结果表明,重庆地区降水空间差异较大,日降水量有增加的趋势;降水变率增大的地区,日降水量差异较大,同时暴雨频次有增加的趋势;拟合日降水的概率密度呈负指数分布,表明日降水仍以小量级为主.

Abstract:

Data of daily precipitation taken from four meteorological stations in Chongqing within 40 years from 1961 to 2000 were used.Mathematical expectation,variation coefficient and probability density function were analyzed or simulated to investigate the variation trend and characteristics of daily precipitation in the area.Results showed that there were significant variations in space and daily precipitation.The variations of daily precipitation and frequency of rainstorm increase as rises.Simulated probability density was negative exponential function;therefore daily precipitation was mainly the light rain.

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中图分类号:P467

引用信息:

[1]陈艳英,马力,高阳华等.重庆地区日降水气候分析[J].南通大学学报(自然科学版),2008,No.26(03):75-80.

基金信息:

重庆市气象局项目(200703)

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