Impact of the Weighted Mean Temperature on the Estimation of GPS Precipitable Water Vapor
The relationship of the weighted mean temperature and the surface temperature was obtained using the radiosonde observation in Anqing from 2004 to 2007. The weighted mean temperature estimated from the regressed formula is higher than that from the Bevis formula when the surface temperature increases,which introduces the difference of approximate 1.9％ of the GPS precipitable water vapor when the surface temperature gets to 40 ℃,and smaller differenceInthe lower surface temperature. The different regressions between different years induce the difference of 0.72％ of the GPS PWV when the surface temperature reaches 40 ℃,and the difference of 2.17％ of the GPS PWVInthe surface temperature of -10 ℃. It suggests that the regressed formula to estimate the weighted mean temperature will be beneficial for the estimation of the GPS PWV in the summer,while it has little positive impact on the estimation in the winter.
Yunchang Cao Feifei Zheng Yifeng Xie Yanmeng Bi
The atmosphere observation Technique Center, Beijing,100081 Heyuan Meteorological Bureau,Heyuan,517000 Anhui Meteorological Bureau,Hefei,230000 The National Satellite Meteorological Center,Beijing,100081
国际会议
2008 International Conference on Microwave and Millimeter Wave Technology(2008国际微波毫米波技术会议)
南京
英文
799-801
2008-04-21（万方平台首次上网日期，不代表论文的发表时间）