摘要
利用1971～2010年鄂西北17个气象观测站雷暴资料,通过数理统计、小波变换和M-K分析,讨论了鄂西北雷暴气候变化及非均一性特征。结果表明,在近40年雷暴日数总体变化呈减少趋势,每10年雷暴日数减少1.3 d,全年雷暴天数达24.9 d。雷暴具有明显的年际和年代际变化特征,存在6 a的显著年际周期,雷暴突变时期出现在20世纪80年代初。
By using the thunderstorm data of 17 stations in Northwest Hubei Province from 1971 to 2010,by applying the mathematical statistics and M-K and wavelet analysis method,the spatial and temporal non-uniformity characteristics of thunderstorm in the area were analyzed.Results indicate that in recent 40 years,the number of the thunderstorm days decreased with a tendency of 1.3 days per 10 years.However,the number of the thunderstorm days in Wudangshan was still more and the annual average was 24.9 days.In the recent 40 years,the thunderstorm showed remarkable interannual and interdecadal variability.There was remarkable interannual period of 6 years.The most concentrated period of thunderstorms mutations was in the early 1980s.
出处
《安徽农业科学》
CAS
北大核心
2011年第34期21321-21322,21539,共3页
Journal of Anhui Agricultural Sciences
基金
湖北省气象科技发展基金项目(2009Q03)
关键词
雷暴
气候特征
小波
M-K分析
Thunderstorm
Climatic characteristics
Wavelet
M-K analysis
