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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F18%3A00496793" target="_blank" >RIV/68378289:_____/18:00496793 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.atmosres.2018.06.005" target="_blank" >http://dx.doi.org/10.1016/j.atmosres.2018.06.005</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.atmosres.2018.06.005" target="_blank" >10.1016/j.atmosres.2018.06.005</a>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10509 - Meteorology and atmospheric sciences

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Atmospheric Research

ISSN

0169-8095

e-ISSN

—

Svazek periodika

213

Číslo periodika v rámci svazku

NOV 15 2018

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

14

Strana od-do

288-301

Kód UT WoS článku

000442169800024

EID výsledku v databázi Scopus

2-s2.0-85048992160