Izvestiya, Atmospheric and Oceanic Physics

, Volume 55, Issue 4, pp 352–356 | Cite as

Validation of Integrated Water-Vapor Content from GNSS Data of Ground-Based Measurements

  • V. V. KalinnikovEmail author
  • O. G. Khutorova


Time series of integrated water-vapor (IWV) content for 2015–2017 at eight paired GNSS stations and solar photometry data from the AERONET network in Europe have been compared. The distance between station pairs was no more than 20 km. The average and standard deviations of discrepancies have been shown to vary seasonally. The GNSS–photometer bias in winter was from –0.61 to 0.34 mm. The IWV content in summer is overestimated by the GNSS relative to photometers by 0.52 to 2.26 mm. The standard deviation is from 1.31 to 1.64 mm with a maximum in summer and decreases to 0.49–0.86 mm in winter, which is 5–6% of IWV.


Global navigation satellite systems solar photometer integrated water vapor content 



We are grateful to B. Holben and his team for providing us with AERONET station data. This study was supported by the Russian Foundation for Basic Research, project no. 17-05-00863. Data processing was conducted within a state grant to the Kazan (Volga Region) Federal University aimed at improving its competitiveness among leading scientific and educational centers in the world.


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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  1. 1.Kazan (Volga Region) Federal UniversityKazanRussia

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