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《Science of Surveying and Mapping》 2016-08
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Correlation analysis of GPS zenith tropospheric delay and precipitable water vapor

CHEN Yu;ZHAO Xialing;WANG Kaitong;ZHANG Shengjun;Faculty of Information Engineering,China University of Geosciences;Graduate School,China University of Geosciences;  
Nowadays,as water vapor content is changing fast and there are many factors affect it,there is still much difficulty ofdetermining its content accurately.This paper used sixCORS stations data in Hongkong area to calculate zenith tropospheric delay(ZTD)and(precipitable water vapor)PWV,and compared them with actual rainfall by using GAMIT software.The results showed that ZTD、PWV and actual rainfallmaintained a correspondence relationship in one or two hours or longer period after rainstorms,and that ZTD and PWV surges and dips would occur,it alsoshowed that the faster changes in ZTDand PWV,the more unstable the atmosphere environment,the higher precipitation actual rainfall probability.
【Fund】: 国家自然科学基金项目(41274036);; 中央高校基本科研业务费专项资金优秀青年基金资助项目(CUGL130258)
【CateGory Index】: P228.4;P412
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