Počet záznamů: 1

Limits of precipitation nowcasting by extrapolation of radar reflectivity for warm season in Central Europe

SYSNO ASEP	0496793
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Limits of precipitation nowcasting by extrapolation of radar reflectivity for warm season in Central Europe
Tvůrce(i)	Mejsnar, Jan (UFA-U)_RID Sokol, Zbyněk (UFA-U)_{RID, ORCID} Minářová, Jana (UFA-U)_{RID, ORCID}
Celkový počet autorů	3
Zdroj.dok.	Atmospheric Research. - : Elsevier - ISSN 0169-8095 Roč. 213, NOV 15 2018 (2018), s. 288-301
Poč.str.	14 s.
Jazyk dok.	eng - angličtina
Země vyd.	NL - Nizozemsko
Klíč. slova	part I ; Lagrangian extrapolation ; severe convection ; scale-dependence ; predictability ; forecasts ; ensemble ; tracking ; images ; verification
Vědní obor RIV	DG - Vědy o atmosféře, meteorologie
Obor OECD	Meteorology and atmospheric sciences
Institucionální podpora	UFA-U - RVO:68378289
UT WOS	000442169800024
EID SCOPUS	85048992160
DOI	10.1016/j.atmosres.2018.06.005
Anotace	Current precipitation nowcasting systems primarily use the extrapolation of observed radar reflectivity. The study focuses on both the extrapolation and the limits of predictability of precipitation using the concept of decorrelation time (DCT). The DCT analysis is based on reflectivity measurements from two radars covering the Czech Republic during the warm season (May-September) of four years (2009-2012). The analysis shows that that the mean DCT for the extrapolation forecast is 45.4 min, whereas the DCT for the persistent forecast is 13.4 min shorter. However, the DCT may increase or decrease by > 40% depending on current meteorological conditions. The investigation of the evolution of DCT in time during two storm events in the Czech Republic suggests that the DCT may significantly vary in time as a consequence of changing character of the precipitation systems.
Pracoviště	Ústav fyziky atmosféry
Kontakt	Kateřina Adamovičová, adamovicova@ufa.cas.cz, Tel.: 272 016 012 ; Kateřina Potužníková, kaca@ufa.cas.cz, Tel.: 272 016 019
Rok sběru	2019

Počet záznamů: 1