Near real-time ZTD estimates from national GNSS reference networks in support of E-GVAP

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025615%3A_____%2F22%3AN0000023" target="_blank" >RIV/00025615:_____/22:N0000023 - isvavai.cz</a>
Result on the web
<a href="https://www.pecny.cz/TropNET" target="_blank" >https://www.pecny.cz/TropNET</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Near real-time ZTD estimates from national GNSS reference networks in support of E-GVAP
Original language description
Global Navigation Satellite System (GNSS) proved to be a very useful measurement technique for the troposphere monitoring, in particular for sensing water vapor content in the lower atmosphere. Near-real time tropospheric parameters estimated using GNSS hourly observations and a batch processing method are operationally assimilated into numerical weather forecasts within the EUMETNET EIG GNSS Water Vapor Programme (E-GVAP, https://egvap.dmi.dk). GNSS estimated parameters, namely Zenith Total Delays (ZTD), are provided station by station at a time resolution of 60 minutes and a latency between 30-90 minutes. A regional solution from several permanent newtorks in Czech Republic and Slovakia is performed on an hourly basis and the resulted ZTDs continuously contribute to the E-GVAP being assimilated by several national meteorological agencies. The accuracy of the ZTDs from the near real-time solution can be characterized with the standard deviation of 3-6 mm and systematic errors below 2 mm. Near real-timel ZTD monitoring is available at https://www.pecny.cz/TropNET and at the E-GVAP web page.
Czech name
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Czech description
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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