摘要
利用近 49年 (195 1— 1999年 )贵州省 19个站和全国 16 0个站月降水资料 ,采用模糊聚类分析、EOF分析、功率谱分析、合成分析等方法分析了贵州降水气候异常的时空分布特征。结果表明 :贵州降水具有显著的年际、年代际变化特征 ,贵州夏季降水异常存在 2 .8年的显著周期。贵州夏季降水与长江、淮河流域夏季降水呈同位相 ,而与陕、甘、宁交界处的夏季降水呈反位相关系。
The monthly precipitation data of 19 stations in Guizhou and 160 stations in China during the last 49 years(1951_1999) are used to study the spatial-temporal distribution, characteristics of climate anomalies of Guizhou by vague assemble analysis, Empirical Orthogonal Function analysis, power spectral analysis and the composite analysis methods, The results show that there are obvious interannual variations of Guizhou precipitation, There is principal rainfall anomaly period around 2.8 years in Guizhou summer. The tendency of precipitation in Guizhou summer is same as it in Yangtze River and Huaihe River, but contrary, to the tendency of rainfall in the area among Shaanxi, Gansu and Lingxia.
出处
《高原气象》
CSCD
北大核心
2003年第1期65-70,共6页
Plateau Meteorology
基金
国家自然科学基金项目 ( 4 0 175 0 2 7)资助
