近50年抚顺市降水变化特征分析  

Analysis on Precipitation Variation Characteristics of Fushun in Recent 50 Years

作　　者：刘东明 孟翠丽[2] 孙桂双 李玲雯[2] 李文博 

机构地区：[1]辽宁省抚顺市气象局,辽宁抚顺113006 [2]南京信息工程大学应用气象学院,江苏南京210044

出　　处：《安徽农业科学》2011年第9期5512-5514,共3页Journal of Anhui Agricultural Sciences

摘　　要：基于辽宁省抚顺市1960～2009年逐日降水资料,利用趋势分析、小波变换、累积距平分析、M-K等方法,分析了抚顺市近50年降水的趋势、多时间尺度变化和降水强度特征。结果表明,抚顺市年降水量呈减少趋势,春、夏、秋季降水量均呈减少趋势,冬季呈增加趋势;多时间尺度特征表现为18年左右和28～30年的年代际尺度以及2～3年、5年左右和10年左右周期的年际尺度;小量级降水日数趋势不显著,大量级降水日数上升趋势显著。Based on daily precipitation data in Fushun of Liaoning Province during 1960-2009,trend analysis,wavelet transformation,accumulative anomalies and Mann-Kendall Method were used to analyze the characteristics of precipitation trend,multi-time scales variation and precipitation intensity.The results showed that annual precipitation in Fushun city presented reducing trend,and precipitation during spring,summer and autumn all showed reducing trend;moreover,the characteristics of multi-time scales were： interdecadal scale were around 18 years and 28-30 years,interannual time scale were 2-3 years and around 5 years as well as 10 years;the trend of small scale precipitation days was not obvious,however,large scale precipitation days showed increasing trend obviously.

关 键 词：降水 小波变换 累积距平法 MANN-KENDALL法 

分 类 号：P458.121[天文地球—大气科学及气象学]