000196560 001__ 196560
000196560 003__ CZ-ZdVUG
000196560 005__ 20231101113751.0
000196560 041__ $$aeng
000196560 040__ $$aABC039$$bcze
000196560 1001_ $$aDouša, Jan
000196560 24510 $$aGNSS Storm Nowcasting Demonstrator for Bulgaria
000196560 300__ $$a15 stran
000196560 5203_ $$aGlobal Navigation Satellite System (GNSS) is an established atmospheric monitoring technique delivering water vapour data in near-real time with a latency of 90 min for operational Numerical Weather Prediction in Europe within the GNSS water vapour service (E-GVAP). The advancement of GNSS processing made the quality of real-time GNSS tropospheric products comparable to near-real-time solutions. In addition, they can be provided with a temporal resolution of 5 min and latency of 10 min, suitable for severe weather nowcasting. This paper exploits the added value of sub-hourly real-time GNSS tropospheric products for the nowcasting of convective storms in Bulgaria. A convective Storm Demonstrator (Storm Demo) is build using real-time GNSS tropospheric products and Instability Indices to derive site-specific threshold values in support of public weather and hail suppression services. The Storm Demo targets the development of service featuring GNSS products for two regions with hail suppression operations in Bulgaria, where thunderstorms and hail events occur between May and September, with a peak in July. The Storm Demo real-time Precise Point Positioning processing is conducted with the G-Nut software with a temporal resolution of 15 min for 12 ground-based GNSS stations in Bulgaria. Real-time data evaluation is done using reprocessed products and the achieved precision is below 9 mm, which is within the nowcasting requirements of the World Meteorologic Organisation. For the period May–September 2021, the seasonal classification function for thunderstorm nowcasting is computed and evaluated. The probability of thunderstorm detection is 83%, with a false alarm ration of 38%. The added value of the high temporal resolution of the GNSS tropospheric gradients is investigated for a storm case on 24–30 August 2021. Real-time tropospheric products and classification functions are integrated and updated in real-time on a publicly accessible geoportal.
000196560 655_4 $$ačlánek v odborném periodiku
000196560 7001_ $$aVáclavovic, Pavel
000196560 7001_ $$aDimitrova, Tsvetelina
000196560 7001_ $$aGuerova, Guergana
000196560 7001_ $$aPenov, Nikolay
000196560 7001_ $$aStoycheva, Anastasyia
000196560 7730_ $$92022$$dBasel:Molecular Diversity Preservation International,2022.$$g14. (15), 15 stran$$tREmote Sensing$$x2071-4292
000196560 85642 $$ahttps://www.isvavai.cz/riv?s=rozsirene-vyhledavani&ss=detail&n=0&h=RIV%2F00025615%3A_____%2F22%3AN0000020%21RIV23-MSM-00025615
000196560 910__ $$aABC039
000196560 980__ $$aclanky_vugtk
000196560 985__ $$adousa
000196560 985__ $$aanotace (J)
000196560 985__ $$ariv
000196560 985__ $$autvar24
000196560 985__ $$avaclavovic