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中文摘要: 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。
中文关键词: 日照,气候变化,减少,突变
Abstract: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.
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引用文本：
谭友邦,谢利娟,1996.内江市近40年日照变化的统计特征[J].气象,22(10):27-30.
,1996.The Statistics Characteristics for Sunshine Change in the Recent fourty Years in Neijiang Municipality[J].Meteor Mon,22(10):27-30.
谭友邦,谢利娟,1996.内江市近40年日照变化的统计特征[J].气象,22(10):27-30.
,1996.The Statistics Characteristics for Sunshine Change in the Recent fourty Years in Neijiang Municipality[J].Meteor Mon,22(10):27-30.