内江地区39年气候变化状况分析  

Analysis on the Climatic Change of Neijiang Area in 39 Years

作　　者：周丽[1] 刘合辉[1] 谢贤健[1] 刘术良 范志华 

机构地区：[1]内江师范学院地理与资源科学学院,四川内江641112 [2]四川省内江市气象局,四川内江641100

出　　处：《安徽农业科学》2011年第28期17479-17482,共4页Journal of Anhui Agricultural Sciences

基　　金：四川省教育厅青年基金项目(10ZB011);四川省教育厅青年基金项目(09ZB035)

摘　　要：利用内江地区1971～2009年的气温变化资料和逐月降水量资料,用气候均值、距平分析和变率分析的方法计算线性趋势进行分析,结果表明:39年来,内江地区气温变化的总趋势是上升的,极端最高气温日数明显增多;年降水量呈波动变化过程,且降水集中在夏季,春秋季节降水基本持平,冬季降水偏少,各季节降水量存在差异,以夏季减少最为明显;内江地区的区域降水量冬、春两季正逐渐增加,而夏秋两季却逐渐减少,年总降水量不断减少。According to the temperature change data and monthly precipitation data in Neijiang from 1971 to 2009,the linear trend was calculated through climate mean,anomaly analysis and variability analysis.As indicated by the results,during the 39 years,the temperature in Neijiang showed a general upward trend,the number of days with extremely high temperature obviously increased;the change of annual precipitation presented fluctuations,and most precipitation concentrated in summer,the precipitations were basically the same in spring and autumn,while decreased in winter,precipitation differed largely in different seasons,the largest decrease was seen in summer;regional precipitation in Neijiang was gradually increasing in winter and spring,but decreasing in summer and autumn,annual total precipitation kept decreasing.

关 键 词：气候变化 趋势分析 内江地区 

分 类 号：P467[天文地球—大气科学及气象学]