中国西北地区7～9月上旬降水与北太平洋海温异常的关系  

Relationships Between Precipitation of Northwest China from July to the First Ten Days of September and North Pacific Sea Surface Temperature

作　　者：魏锋[1,2] 王劲松[1] 

机构地区：[1]中国气象局兰州干旱气象研究所甘肃省干旱气候变化与减灾重点实验室,甘肃兰州730020 [2]甘肃省嘉峪关市气象局,甘肃嘉峪关735100

出　　处：《干旱气象》2010年第4期396-400,共5页Journal of Arid Meteorology

基　　金：科技部科研院所社会公益研究专项"中国干旱气象灾害监测预警方法研究"(2004DIB5J192-02);甘肃省气象局项目"西北地区干旱指数研究"(2005-2)共同资助

摘　　要：利用西北地区131个测站(1961～2000年)的7～9月上旬逐旬降水量和北太平洋海温资料,用奇异值分解(SVD)技术,分析了同期及前期北太平洋海温异常型对中国西北地区7～9月上旬降水场分布的影响。结果表明:西北地区7～9月上旬降水场的分布与同期、前期冬季、春季北太平洋海温分布型之间有较好的对应关系,这种对应关系可作为预测中国西北地区7～9月上旬降水的参考和依据。Based on the monthly mean data of North Pacific Sea Surface Temperature （ SST） and the ten-day precipitation data from 131 observational stations in Northwest China during 1961-2000,the impact of SST anomaly on precipitation of Northwest China from July to the first ten days of September are analyzed by using Singular Value Decomposition （ SVD） method. The results show that the precipitation of Northwest China from July to the first ten days of September was closely related to the north Pacific SST anomaly in corresponding period,the former spring and winter,which can be used as a good reference for prediction of precipitation from July to the first ten days of September in Northwest China.

关 键 词：西北地区 降水 海温异常 SVD分析 

分 类 号：P461[天文地球—大气科学及气象学]