华东地区气温变化的区域特征分析  

Study on the Regional Characteristics of Air Temperature in East China

作　　者：王海平[1] 汤燕冰[1] 

机构地区：[1]浙江大学地球科学系,浙江杭州310028

出　　处：《科技通报》2003年第3期247-251,共5页Bulletin of Science and Technology

摘　　要：用转动主分量分析法对华东地区年平均气温场进行区域划分.在此基础上,分析了各区年平均、年平均最高和最低气温的年际和年代际变化趋势.结果表明,近38年来整个华东区年平均气温总体呈上升趋势,其趋势与相应的年平均最低气温变化趋势极为相似,说明年平均气温升高主要是由年平均最低气温升高引起.显著增温区主要在长江以北,20世纪90年代年平均气温比60年代升高0.9℃.The characteristics of annual mean temperature change over East China during the period of 1961-1998 are investigated by using the method of rotated principal component analysis. The result shows that three subregions can be taken for annual mean temperature change. The annual and decadal trends of air temperature variation have been examined for those subregions. In the recent 38 years,the annual mean temperature of East China is in increasing trend, its change trend resembles that of annual mean minimal temperature, so the increase of annual mean temperature is mainly caused by the increase of annual mean minimal temperature. And that is mainly in the region north to the Changjiang River, annual mean temperature of which has increased from 1960's to 1990's by 0.9℃. 

关 键 词：气候学 气温 变化趋势 转动主分量分析 华东地区 

分 类 号：P467[天文地球—大气科学及气象学]