Tropospheric delay from EPN reprocessing by WUT LAC as valuable data source - in comparison to operational EPN products and aerological data

• Autorzy: Kruczyk M. , Liwosz T.
• Języki publikacji: EN

Abstrakty

EN

Standard EPN tropospheric products still show some discrepancies, prominent especially before GPS week 1400. It was one of the motives of massive reprocessing projects organised in the frame of both IGS and EPN. WUT LAC is one of Analysis Centers actively participating in EPN Reprocessing Campaign. Both operational tropospheric products and reprocessing campaign were manifold analysed. Properties of information carried in ZTD estimates were investigated both in ZTD solutions and in the form of IPW (Integrated Precipitable Water). Independent aerological data sources - radiosounding and CIMEL-318 sunphotometer were used for external verification. Authors demonstrate some results convincingly demonstrating value of reprocessed tropospheric product. Tropospheric solutions from reprocessing compared to meteorological data demonstrate better conformity. Most important application of long series ZTD’s of uniform quality is climatology. Search for climate change signal in IPW series is possible only with a reliable tropospheric solution. Reprocessing campaign results meet this requirement.

Słowa kluczowe

EN

GPS; tropospheric delay; IPW; water vapour; sun photometer

PL

GPS; opóźnienie w troposferze; IPW; para wodna; fotometr słoneczny

• Wydawca: Wydział Geodezji i Kartografii Politechniki Warszawskiej
• Czasopismo: Reports on Geodesy
• Rocznik: 2012
• Tom: z. 1/92
• Strony: 109--122
• Opis fizyczny: Bibliogr. 9 poz., tab., wykr.

Twórcy

autor

Kruczyk M.

• Department of Geodesy and Geodetic Astronomy, Faculty of Geodesy and Cartography, Warsaw University of Technology, Poland

autor

Liwosz T.

• Department of Geodesy and Geodetic Astronomy, Faculty of Geodesy and Cartography, Warsaw University of Technology, Poland

Bibliografia

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• [2] Byun, S. H., Y. E. Bar-Sever (2009). A new type of troposphere zenith path delay product of the international GNSS service, J Geod 83, 367–373.
• [3] Dach, S. H. P. F. M. M., R. (2007). Bernese GPS Software Version 5.0.
• [4] Hoffmann-Wellenhof, B., H. Lichtenegger, J. Collins (1997). GPS Theory and Practice, Fourth, revised edition, Springer Verlag, Wien-New York.
• [5] Kruczyk, M. (2006). Remarks on GPS Tropospheric Delay Products and their Usefulness, EUREF Publication No. 15, Mitteilungen des Bundesamtes für Kartogräphie und Geodäsie, Band 38, 349–355.
• [6] Kruczyk, M. (2008). Tropospheric Delay in GNSS and Meteorological ZTD and IPW Data Sources, Reports on Geodesy (2), 125–137.
• [7] Liwosz, T., M. Kruczyk, J. Rogowski (2010). WUT LAC Report Presented at 7th Analysis Workshop, Warsaw, November 18-19, available at http://www.epncb.oma.be.
• [8] Rocken, C., R. Ware, T. V. Hove, F. Solheim, C. Alber, J. Johnson, M. Bevis, S. Businger (1993). Sensing atmospheric water vapor with the Global Positioning System, Geophys. Res. Lett. 20, 2631.
• [9] Völksen, C. (2010). The EPN Reprocessing Project: Mission, Plans and Problems Presented at 7th Analysis Workshop, Warsaw, November 18-19, available at http://www.epncb.oma.be/_newsmails/workshops/EPNLACWS_2010/day2/s1/_the_epn_reprocessing_project_mission_plans_and_problems.pdf.