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- W2381327218 abstract "Meteorological parameters are needed when ground-based GPS is used for the detection of PWV(precipitable water vapor).However,a large amount of GPS data has not been sufficiently used because of the lack of related meteorological data.In this paper,the methods and feasibility of deriving meteorological parameters from ERA-Interim reanalysis data and calculating GPS/PWV with the extracted parameters in China are assessed.The atmospheric pressure,temperature and relative humidity derived from ERA-Interim are compared with meteorological observation data at 24meteorological stations from 2006to 2007,and the GPS/PWV calculated from the two data sets are also contrasted.Results are as follows:① Atmospheric pressure derived from upper-air reanalysis data,temperature and relative humidity derived from surface reanalysis data,has relatively high precision.② The reanalysis parameters and meteorological observation data comparisons at 24stations show a mean bias of 0.08hpa and a RMSD of 0.85hpa with atmospheric pressure,a mean bias of 0.05Kand a RMSD of 2.45Kwith temperature,a mean bias of 2.82%and a RMSD of 14.75% with relative humidity.③ The ERA-Interim reanalysis data is more reliable in the east of China than in the west.The precision of temperature and relative humidity data show seasonal variation.④ As compared with GPS/PWV calculated by the meteorological observation data,the GPS/PWV calculated by the ERAInterim data give a mean difference of less than 0.5mm and a RMSD of less than 1mm." @default.
- W2381327218 created "2016-06-24" @default.
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- W2381327218 date "2014-01-01" @default.
- W2381327218 modified "2023-09-24" @default.
- W2381327218 title "Accuracy Assessment of Applying ERA-Interim Reanalysis Data to Calculate Ground-based GPS/PWV over China" @default.
- W2381327218 hasPublicationYear "2014" @default.
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