Open AccessValidation of GNSS data about the integrated water vapor in Europe using sun photometers
Author(s) -
В. В. Калинников,
В. В. Калинников,
О. Г. Хуторова,
О. Г. Хуторова
Publication year - 2019
Publication title -
izvestiâ akademii nauk sssr. fizika atmosfery i okeana
Language(s) - English
Resource type - Journals
ISSN - 0002-3515
DOI - 10.31857/s0002-351555458-63
Subject(s) - photometer , gnss applications , sun photometer , environmental science , standard deviation , aeronet , meteorology , water vapor , atmospheric sciences , radiosonde , geodesy , remote sensing , geography , mathematics , global positioning system , statistics , aerosol , physics , optics , computer science , telecommunications
In the article the comparison of time series of integrated water vapor (IWV) for 2015-2017 at 8 pair stations of GNSS and solar photometers of AERONET network in Europe is carried out. The distance between pairs of stations didn’t exceed 20 km. It is shown that bias and standard deviations of divergences have the seasonal course. In the winter GNSS-photometer bias was from –0.61 to 0.34 mm. In the summer the GNSS overestimates IWV relative to photometers by values from 0.52 to 2.26 mm. The standard deviation is maximal in summer and is from 1.31 to 1.64 mm, in winter it decreases to 0.49-0.86 mm that is 5-6% of IWV.