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Reports on Geodesy and Geoinformatics

(formerly: Reports on Geodesy); The Journal of Warsaw University of Technology

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Integrated Precipitable Water from GPS Observations and CIMEL Sunphotometer Measurements at CGO Belsk

Michał Kruczyk
  • Corresponding author
  • Department of Geodesy and Geodetic Astronomy, Faculty of Geodesy and Cartography, Warsaw University of Technology, Pl. Politechniki 1, 00-661, Warsaw, Poland
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  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Tomasz Liwosz
  • Department of Geodesy and Geodetic Astronomy, Faculty of Geodesy and Cartography, Warsaw University of Technology, Pl. Politechniki 1, 00-661, Warsaw, Poland
  • Email
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Aleksander Pietruczuk
Published Online: 2017-08-01 | DOI: https://doi.org/10.1515/rgg-2017-0005


This paper describes results of integrated precipitable water co-located measurements from two techniques: GPS solution and CIMEL-318 sunphotometer. Integrated Precipitable Water (IPW) is an important meteorological parameter and is derived from GPS tropospheric solutions for GPS station at Central Geophysical Observatory (CGO), Polish Academy of Sciences (PAS), Belsk and compared with sunphotometer (CIMEL-318 device by Cimel Electronique) data provided by Aerosol Robotic Network (AERONET). Two dedicated and independent GPS solutions: network solution in the sub-network of European Permanent Network (EPN) and precise point positioning solution have been made to obtain tropospheric delays. The quality of dedicated tropospheric solutions has been verified by comparison with EPN tropospheric combined product. Several IPW comparisons and analyses revealed systematic difference between techniques (difference RMS is over 1 mm). IPW bias changes with season: annual close to 1 mm IPW (and semi-annual term also present). IPW bias is a function of atmospheric temperature. Probable cause of this systematic deficiency in solar photometry as IPW retrieval technique is a change of optical filter characteristics in CIMEL.

Keywords: water vapour; GPS; IPW; tropospheric delay; sunphotometer


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About the article

Received: 2016-11-02

Accepted: 2017-03-10

Published Online: 2017-08-01

Published in Print: 2017-06-27

Citation Information: Reports on Geodesy and Geoinformatics, Volume 103, Issue 1, Pages 46–65, ISSN (Online) 2391-8152, DOI: https://doi.org/10.1515/rgg-2017-0005.

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© 2017. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License. BY-NC-ND 4.0

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