000196412 001__ 196412
000196412 003__ CZ-ZdVUG
000196412 005__ 20220607110929.0
000196412 041__ $$aeng
000196412 040__ $$aABC039$$bcze
000196412 1001_ $$aDouša, Jan
000196412 24510 $$aGNSS Zenith Total Delay (ZTD) estimates in real time
000196412 5203_ $$aGlobal 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.
000196412 655_4 $$aanotace
000196412 7001_ $$aBezděka, Petr
000196412 7001_ $$aKala, Michael
000196412 7001_ $$aVáclavovic, Pavel
000196412 7730_ $$92021
000196412 8564_ $$uhttps://www.pecny.cz/RT-TROPO
000196412 85642 $$ahttps://www.isvavai.cz/riv?s=rozsirene-vyhledavani&ss=detail&n=0&h=RIV%2F00025615%3A_____%2F21%3AN0000045%21RIV22-MSM-00025615
000196412 910__ $$aABC039
000196412 980__ $$aclanky_vugtk
000196412 985__ $$adousa
000196412 985__ $$ariv
000196412 985__ $$autvar24
000196412 985__ $$abezdeka
000196412 985__ $$akala
000196412 985__ $$avaclavovic