广州市气温的气候变化特征及其成因分析  

Climatic Characteristics of Guangzhou Temperature and Its Cause Analysis

作　　者：刘燕[1] 程正泉[1] 叶萌[1] 

机构地区：[1]广州中心气象台,510080

出　　处：《气象》2008年第2期52-60,共9页Meteorological Monthly

基　　金：广州中心气象台科研基金

摘　　要：采用1951—2005年广州气温以及NCEP再分析资料,分析了近55年来广州市气温变化情况以及成因。结果表明:广州气温在1980年代中期以来呈显著上升趋势,其中冬季最低气温增温最为显著;冬季低温(≤5℃)日数明显减少,夏季高温(≥35℃)日数则显著增加;500hPa高度场的异常升高、冬季风和夏季风强度的减弱与广州气温的升高有直接的关系,而城市化进程同样也在广州气温尤其是冬季最低气温的增温中起到不可忽视的作用。By use of Guangzhou temperature and NCEP reanalysis data from 1951 - 2005, the change of Guangzhou temperature and its probable cause is studied. Evidence suggests that Guangzhou temperature shows an obvious increase since the middle of 1980s, with the most prominent trend in winter minimal temperature. The number of low temperature day （≤5℃） in winter decreases obviously and that of high temperature day （≥35℃） in summer increases promi- nently. Results also show that the increase in Guangzhou temperature has a direct relationship with the height of 500hPa fields and the weakening of winter and summer monsoon. And the role of urbanization process can＇ t be neglected in the increase of Guangzhou temperature, especially in winter minimal temperature.

关 键 词：气温 趋势分析 大气环流 城市化 

分 类 号：P423.3[天文地球—大气科学及气象学] S162[农业科学—农业气象学]