摘要
利用１９６０—１９９５年内江市各测站的逐月日照时数资料，分析了内江市近４０年来日照的变化特征，发现区域平均年日照以４６．９８小时／１０年的倾向率减少，这种减少趋势主要表现在冬、夏两季。同时还检测出内江市区域平均年日照时数在１９８０年发生突变，其后进入一个相对少日照时段。
Utilizing the data of the monthly sunshine hours in Neijiang stations in 1960 1995,the change characteristics of the sunshine hours about recent fourty years in Neijiang municipality are analysed,and the sunshine average hours in the area is decreasing at the trend rate of -46 98 hours/10 years.This kind of tendency appears mainly in winter and Summer Meantime,it was pointed out that the sudden change of sunshine hours occured in Neijiang in 1980,and then there is a relative less hours period.
出处
《气象》
CSCD
北大核心
1996年第10期27-30,共4页
Meteorological Monthly
关键词
日照
气候变化
统计分析
sunshine climatic changes decrease sudden change
