Title: Analysis of Variation Characteristics and Causes of Sunshine Duration at Chuxiong in Yungui Plateau in Last 50 Years
Abstract:Basing on the meteorological data of sunshine duration at Chuxiong in the last 50 years,its temporal variation characteristics of sunshine duration are analyzed using the linear tendency estimate meth...Basing on the meteorological data of sunshine duration at Chuxiong in the last 50 years,its temporal variation characteristics of sunshine duration are analyzed using the linear tendency estimate method,and the factors affecting the sunshine duration are analyzed using the Statistic Package for Social Science(SPSS) software.The result shows that in the last 50 years the annual sunshine duration at Chuxiong has been diminishing,and decreasing waved.It also shows that monthly sunshine duration variation is that the sunshine duration from November to April of the following year is more than that from May to October.So the sunshine duration in dry season is more than that in the wet season.The most sunshine hours appear in March,the least sunshine hours appear in July.In the past decade,the daily variation of sunshine duration shows that the most sufficient is at 14:00(Beijing time).Through some relative analysis,the variation of sunshine duration is obviously negatively with the cloudage,fog days and annual precipitation of natural factors,and weak negative correlation with human factors.Read More
Publication Year: 2014
Publication Date: 2014-01-01
Language: en
Type: article
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