银川市太阳辐射气候变化特征分析

Analysis of Climate Change Features of Solar Radiation in Yinchuan City

根据银川市1973-2012年太阳总辐射资料，采用线性倾向估计法、累积距平法、Mann—Kendal检验法分析了银川市太阳总辐射的气候变化特征。结果表明：近40年来，银川市年、季、月太阳总辐射总体上均呈减少趋势；太阳总辐射具有冬季最小、春季猛增、夏季最大、秋季剧降的特点；全年、秋季、冬季、1月、9月、12月太阳总辐射的显著性突变分别发生在2001、1999、2000、2001、2000、2000年。

According to the data of the total solar radiation in Yinchuan city from 1973 to 2012, the climate change features of the total solar radiation in Yinchuan city were analyzed by using linear tendency estimate method, accumulated anomaly method, and Mann - Kendal inspection method. The results indicated that the annual, seasonal and monthly total solar radiation in Yinchnan gen- erally showed a decreasing trend in recent forty years ; the total solar radiation had a significant seasonal variation, and possessed the characteristics of the lowest value in winter, rapid rising in spring, the highest value in summer, and sharp drop in autumn; the sig- nificant changes in the total solar radiation of whole year, autumn, winter, January, September and December occurred in the year 2001, 1999, 2000, 2001, 2000 and 2000 respectively.