摘要
根据1976—2015年水城县逐日日照时数资料,采用MK突变、线性回归倾向等方法,分析水城县近40年日照时数时空变化特征。结果表明,水城县近40年年平均日照时数为1 367.6 h,从线性趋向分析可以得出1976—1994年为年日照时数偏多期;1995—2004年、2005—2015年日照时数总体呈减少趋势;春、夏、秋、冬季日照时数表现为减少趋势,与年日照时数变化趋势相对应,其中夏季减少趋势最为明显。
Based on daily sunshine duration data of Shuicheng County in 1976-2015,spatial-temporal change characteristics of sunshine duration in Shuicheng County in recent 40 years were analyzed by the method of MK mutation and linear regression trend. The results showed that the average annual sunshine duration in Shuicheng County in recent 40 years was 1 367.6 h. From the linear trend analysis,it could be concluded that the annual sunshine duration was excessive in 1976-1994. The sunshine duration showed a decreasing trend in 1995-2004 and 2005-2015. The sunshine duration in spring,summer,autumn and winter showed a decreasing trend,and the weakening trend in summer was the most obvious,which corresponded to the change trend of annual sunshine hours.
作者
陈丽
董瑞
藏精明
李贵琼
CHEN Li;DONG Rui;ZANG Jing-ming;LI Gui-qiong(Panzhou Meteorological Bureau of Guizhou Province,Panzhou Guizhou 553537;Shuicheng Meteorological Bureau)
出处
《现代农业科技》
2018年第10期217-219,共3页
Modern Agricultural Science and Technology
基金
贵州省气象局科技开发研究基金项目(黔气科合KF[2015]02号)
