1965—2017年汤阴县日照时数变化特征分析
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摘要
本文利用汤阴县1965—2017年53年日照时数的资料,运用线性趋势、统计分析的方法,对汤阴县日照时数的年际、年代际变化和月份变化、季节变化进行分析。结果表明,汤阴县日照时数随着时间呈现显著减少趋势,气候倾向率为-18.8h.10a-1,日照时数在20世纪60年代中后期和70年代偏多,年代际变化不明显,80年代急剧减少,年代际呈显著急剧减少趋势;月总日照时数最高值为5月,最低值为1月,最高值和最低值相差较大;季节变化春季最高,夏季次之,冬季最低,四季均呈显著性减少的趋势,其中夏季减少趋势最显著。
In this paper, the interannual, interdecadal, monthly and seasonal variations of sunshine hours in Tangyin County were analyzed by using the data of 53 years from 1965 to 2017 and the methods of linear trend and statistical analysis. The results showed that the sunshine hours in Tangyin County showed a significant decreasing trend with time, and the climatic tendency rate was-18.8 h·10 a-1. The sunshine hours were more in the mid-late 1960 s and 1970 s. The interdecadal variation was not obvious. The sunshine hours in Tangyin County decreased sharply in the 1980 s, and the interdecadal trend decreased sharply. The maximum of the total monthly sunshine hours was May, and the lowest was January. The seasonal variation is the highest in spring, followed by summer, and the lowest in winter,with a significant decreasing trend in all seasons, with the most significant decreasing trend in summer.
In this paper, the interannual, interdecadal, monthly and seasonal variations of sunshine hours in Tangyin County were analyzed by using the data of 53 years from 1965 to 2017 and the methods of linear trend and statistical analysis. The results showed that the sunshine hours in Tangyin County showed a significant decreasing trend with time, and the climatic tendency rate was-18.8 h·10 a-1. The sunshine hours were more in the mid-late 1960 s and 1970 s. The interdecadal variation was not obvious. The sunshine hours in Tangyin County decreased sharply in the 1980 s, and the interdecadal trend decreased sharply. The maximum of the total monthly sunshine hours was May, and the lowest was January. The seasonal variation is the highest in spring, followed by summer, and the lowest in winter,with a significant decreasing trend in all seasons, with the most significant decreasing trend in summer.
引文
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