GPS站水汽压与可降水分关系的探讨  

Study on the relation of water vapor pressure and PWV over GPS station

作　　者：岳迎春[1] 明祖涛[1] 俞艳[2] 

机构地区：[1]中国地质大学信息工程学院,武汉430074 [2]武汉理工大学资源与环境学院,武汉430070

出　　处：《测绘科学》2009年第5期164-165,149,共3页Science of Surveying and Mapping

基　　金：中国地质大学(武汉)优秀青年教师资助计划资助项目(编号:CUGQNL0929)

摘　　要：利用GPS技术遥感大气可降水分的精度已经达到1-2mm,可以作为检验其他手段获取的可降水分的精度。文中对于南极稀少的GPS站点估计的可降水分,探讨了水汽压与可降水分的关系,得出两者满足的二次曲线拟合模型,使之适合无GPS站点的局部地区,并通过南极应用实例验证了该模型的正确性。The precision of remote sensing of atmospheric precipitation using GPS technology has already reached 1-2 mm, which can be used as testing the accuracy of precipitation obtained by other means. In this paper, the relationship between precipitation and the vapor pressure are researched by the PWV over scarce GPS stations in the Antarctic to obtain the quadratic curve fitting models of vapor pressure and PWV meeting to local area without GPS sites. At the same time, the examples of application in Antarctic demon- strate the correction of the model. It is fast and accurate to estimate the atmospheric precipitation that provides a new method for the meteorological application in Antarctic in future.

关 键 词：GPS 水汽压 可降水分 二次曲线拟合模型 

分 类 号：P228.41[天文地球—大地测量学与测量工程]