Počet záznamů: 1
Verification of the QPF for severe local storms vs heavy stratiform rains
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SYSNO ASEP 0510870 Druh ASEP A - Abstrakt Zařazení RIV Záznam nebyl označen do RIV Zařazení RIV Není vybrán druh dokumentu Název Verification of the QPF for severe local storms vs heavy stratiform rains Tvůrce(i) Zacharov, Petr, jr. (UFA-U) RID, ORCID
Řezáčová, Daniela (UFA-U) RID, ORCIDCelkový počet autorů 2 Zdroj.dok. 10th European Conference on Severe Storms (ECSS 2019). - Münchene : European Severe Storms Laboratory e.V. (ESSL), 2019 Poč.str. 1 s. Forma vydání Online - E Akce European Conference on Severe Storms (ECSS) /10./ Datum konání 04.11.2019 - 08.11.2019 Místo konání Kraków Země PL - Polsko Typ akce WRD Jazyk dok. eng - angličtina Země vyd. DE - Německo Klíč. slova heavy precipitation ; stratiform rain ; quantitative precipitation forecast (QPF) ; verification Vědní obor RIV DG - Vědy o atmosféře, meteorologie Obor OECD Meteorology and atmospheric sciences Institucionální podpora UFA-U - RVO:68378289 Anotace Results of the verification of Quantitative Precipitation Forecast (QPF) by spatial FSS techniques are presented.
The QPF of 3h rainfalls was produced by the NWP model ALADIN CZ, operated with the horizontal resolution
of 4.71 km in the Czech Hydro-meteorological institute (CHMI). The CHMI operational product MERGE, which
merges the radar-based rain rate with the data from the gauge stations, was the source of the verification data. The
verified set covers the three summer periods from 2013, 2015, and 2016. The forecasts with a leading time up to
54h include local convective storms and heavy rainfalls from stratiform clouds as well. The verification domain
covers the territory of the Czech Republic.
The verification uses the FSS (Fraction Skill Score) approach with various values of the precipitation threshold
and with various size of elementary areas (area windows). The whole set of forecast is characterized by the
fraction of useful forecasts (FSS > FSSuniform) together with the mean and aggregated FSS values. We compare
the verification results for 5 classes, which are defined by mean and maximum 3h rainfalls over the verification
domain, specifically the classes of heavy precipitation from convective storms and from stratiform cloudiness.
In addition to diagnostic global parameter we study the stratification according the prognostic values of global
parameters and according the parameters resulting from the statistical relationship between the diagnostic and
prognostic parameter values. The work aims at testing the hypothesis that the QPF uncertainty can be estimated by
verification based on prognostic parameters i.e. in the forecast time when the precipitation data are not available yet.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 2020
Počet záznamů: 1