新疆哈密地区近54a日照时数的均一性分析及其影响因素

以新疆哈密地区1961-2014年6个气象观测站地面气象观测资料为依据,利用线性趋势分析、相关性分析、M-K突变检验分析等方法,对哈密地区近54a四季及年平均日照时数的变化趋势、异常年份、突变检验及影响因子进行分析,得出以下结论：近54a哈密地区春季与年平均日照时数均呈上升趋势,而夏、秋、冬季变化比较平稳；年日照时数异常偏少出现在1998年,但从未出现过异常偏多年；年日照时数在1973年和2008年发生两次突变,减少、增加趋势不显著；年、春季日照时数增加与低云量的减少关系密切。

Sunshine Hour Change Characteristics and Its Influence Factors in Recent 54 Years of Hami of Xinjiang

based on surface weather observation data of 6 meteorological stations of Hami of Xinjiang from 1961 to 2014, and with methods of linear trend analysis, relevance analysis, and M-K abrupt change analysis, the analyses for the change trend, abnormal years, abrupt change test and influence factors of the average four season and annual sunshine hours of Hami in recent 54 years are carried out, and the following conclusions are made: the average spring season and annual sunshine hours of Hami in recent 54 years both take upward trend, the changes of summer, autumn, and winter are relatively smooth; the years with abnormal low annual sunshine hour amount occurred in 1998, and no years with abnormal high annual sunshine hour amount occurred; the annual sunshine hours occurred two times of abrupt change which were in 1973 and 2008, with the decrease and increase trends being not obvious; the increase of annual, spring season sunshine hours and the decrease of low cloud cover amount have close relationship.