辽宁省大洼县50年气候变化特征分析

Analysis of Climate Change Characteristics in Dawa County,Liaoning Province

利用大洼县1961～2010年的气温、降水、日照等资料，统计分析该县50年气候变化特征。结果表明，近50年大洼县全年及春、夏、秋、冬季四季平均气温总体呈上升趋势，以冬季增温最为明显；降水全年及春、夏、冬季有增多的趋势，秋季有减少的趋势，夏季降水量增幅最大；全年及四季的日照变化明显呈减少趋势，其中夏季日照时数减少幅度最大。

By using temperature, precipitation, sunshine data in Dawa County during 1961 -2010, the climate variation characteristics were analyzed. The results showed that the annual, spring, summer, autumn and winter mean temperature indicate rise trend, especially in winter; the annual precipitation, spring, summer, winter indicate increase trend, except for autumn; sunshine throughout the year and the seasons change significantly decreasing trend, the number of sunshine hours reduce sharpest during the summer.