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http://dx.doi.org/10.5467/JKESS.2013.34.7.626

The Characteristic Analysis of Precipitable Water Vapor According to GPS Observation Baseline Determination  

Lim, Yun-Kyu (High Impact Weather Research Center, National Institute of Meteorological Research)
Han, Sang-Ok (High Impact Weather Research Center, National Institute of Meteorological Research)
Jung, Sueng-Pil (High Impact Weather Research Center, National Institute of Meteorological Research)
Seong, Ji-Hye (High Impact Weather Research Center, National Institute of Meteorological Research)
Publication Information
Journal of the Korean earth science society / v.34, no.7, 2013 , pp. 626-632 More about this Journal
Abstract
In this study the GPS Precipitable Water Vapor (PWV) was derived and evaluated by a radiosode measure during the winter intensive observation in Gangneung site from January 5 till February 29 in 2012. Bernise 5.0 software was used to derive the GPS data. GPS-derived PWV from Zero difference (GANG) and Single difference (GANG and DAEJ) was high variance in time and about 5 times the PWV of radiosonde. GPS post-processing has been performed from two additional IGS site (Xian Dao, Ibaraki-ken) in order to correct the absolute troposphere errors. As a result, the mean bias error (MBE) and root mean square error (RMSE) and correlation compared with radiosonde measure were 0.67 mm, 6.40 mm, and 0.93, respectively. In order to correct the relative troposphere errors from the altitudinal difference between the two GPS receivers, we calculated the GPS-derived PWV by adding the data of GPS that was installed in Gangneung-Wonju University near the Gangwon Regional Meteorological Administration. In the end, the improved result showed that MBE, RMSE and correlation in comparison with radiosonde measures were 0.61 mm, 5.79 mm, and 0.93, respectively.
Keywords
precipitable water vapor; base line; GPS; Bernese;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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