2007～2010年云南GPS观测大气可降水量特征分析  

THE ANALYSIS OF GPS-RETRIEVED PWV CHARACTERISTIC IN YUNNAN FROM 2007-2010

作　　者：海云莎[1,2] 孙绩华[3] 陈新梅[3] 

机构地区：[1]云南大学资源环境与地球科学学院,云南昆明650091 [2]云南省气象台,云南昆明650034 [3]云南省气象科学研究所,云南昆明650034

出　　处：《云南地理环境研究》2011年第2期78-84,共7页Yunnan Geographic Environment Research

基　　金：云南省气象局技术开发项目(YB201001);公益性行业(气象)科研专项(GYHY201006054);云南省省院省校科技合作计划(2006YX39)共同资助

摘　　要：利用最新云南地基GPS站观测和探空观测资料分析表明:GPS/PWV和探空大气可降水量变化趋势一致,相关性好;云南省GPS/PWV年内干湿季气候特征分明,湿季开始前GPS/PWV月变率小于干季开始前的月变率;全省GPS/PWV年平均日变化峰值和谷值出现时间一致,勐腊、蒙自和昆明具有准双峰型特征;勐腊站干季、湿季日变化明显不同,其余测站干季和湿季的PWV日变化特征与全年平均日变化特征基本一致。GPS/PWV资料能够反应云南雨季开始期时空演变趋势。Using newest Yunnan ground GPS-retrieved atmospheric Precipatable Water Vapor（PWV）with the meteorological sounding observation to be analyzed,the results shown that GPS/PWV has the consistent change tendency and good correlation with the radiosonde observation.The GPS/PWV in Yunnan Province has distinct climate characteristics of dry season and rainy season within the year,starts,GPS/PWV monthly variation rate before the beginning of the rainy season is smaller than of the dry season.The peak to volley value of GPS/PWV annual mean diurnal variation in entire province appears consistently,quasi-bimodal characteristics in Mengla,Mengzi and Kunming stations;the diurnal variation of dry season and rainy season are obviously different in Mengla station,but basically same in other stations with that of the annual mean characteristics.GPS/PWV data could be able to represent the spatial and temporal varitations of Rainy Season Onset Time of Yunnan Province.

关 键 词：云南 大气可降水量 季节变化 日变化 雨季开始期 

分 类 号：P468[天文地球—大气科学及气象学]