Constructing temporal and spatial water vapor figures by GPS remote sensing along slant rays

查看全文 作　　者：MAO [1,2]Hui;MAO [1]JieTai;BI [1]YanMeng;LI [1]ChengCai;LIU [1]XiaoYang

机构地区：[1]Department of Atmospheric Sciences,School of Physics,Peking University,Beijing 100871,China;[2]Shenzhen Meteorological Bureau,Shenzhen 518001,China

出　　处：《Science China Earth Sciences》索引2007年第50卷第2期,共10页

基　　金：Supported by the National Natural Science Foundation of China (Grant Nos. 40075002, 90211001 and 40575001) 摘　　要：A Global Positioning System (GPS) receiver can generally track 5-7 rays from GPS satellites at any moment, and water vapor along these ray paths (slant-path water vapor, SWV) may be retrieved using the methods developed in recent years. This paper suggests two new parameters-absolute vertical SWV (VSWV) and relative VSWV derived from SWV, and their temporal and spatial figures can reflect the heterogeneous distribution and variation of water vapor field. This approach has been applied to the weather diagnoses in a severe storm event in Beijing during July 2004, and it is concluded that the temporal and spatial figures of absolute VSWV and relative VSWV can be useful in monitoring the evolution of water vapor field and be potential in better understanding the precipitation process. 关键词：GPS ABSOLUTE VSWV RELATIVE VSWV water vapor precipitation

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Constructing temporal and spatial water vapor figures by GPS remote sensing along slant rays

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