GNSS Zenith Total Delay (ZTD) estimates in real time
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025615%3A_____%2F21%3AN0000045" target="_blank" >RIV/00025615:_____/21:N0000045 - isvavai.cz</a>
Result on the web
<a href="https://www.pecny.cz/RT-TROPO" target="_blank" >https://www.pecny.cz/RT-TROPO</a>
DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
GNSS Zenith Total Delay (ZTD) estimates in real time
Original language description
Global Navigation Satellite System (GNSS) is an established atmospheric monitoring technique delivering water vapor data in near-real time (NRT) with a time resolution of 60 minutes and a latency of 90 minutes for operational Numerical Weather Prediction in Europe within the EUMETNET EIG GNSS Water Vapor Programe (E-GVAP). Recently, the GNSS processing has been advanced towards real-time Zenith Tropospheric Delays (ZTDs) estimates comparable in quality to the standard NRT solution. Contrary to NRT, the RT solution provides a product with a 5-min temporal resolution and the latency lower than 5 minutes, hence being suitable for for severe weather monitoring and nowcasting. The new service has been established at Geodetic Observatory Pecny of the Research Institute of Geodesy, Topography and Cartography for high-resolution RT GNSS ZTD production. The Precise Point Positioning (PPP) method operated in real time has been conducted with the G-Nut software since 2020 for more than 200 stations in Europe and worldwide. The evaluation of the RT ZTDs is regularly performed using final GNSS tropospheric products, and the results achieved root-mean-square errors bellow 5-9 mm. Actual visualizations of the product is available at https://www.pecny.cz/RT-TROPO.
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
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OECD FORD branch
10509 - Meteorology and atmospheric sciences
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů