Radar-based QPE for the modeler oriented QPF verification by traditional and spatial techniques

0395895 - ÚFA 2014 FR eng C - Conference Paper (international conference)
Řezáčová, Daniela - Zacharov, Petr, jr. - Sokol, Zbyněk
Radar-based QPE for the modeler oriented QPF verification by traditional and spatial techniques.
ERAD 2012 - 7th European Conference on Radar in Meteorology and Hydrology. Toulouse: Météo France, 2012, s. 1-3.
[ERAD 2012 - European Conference on Radar in Meteorology and Hydrology /7./. Toulouse (FR), 24.06.2012-29.06.2012]
R&D Projects: GA MŠMT LD11044
Institutional support: RVO:68378289
Keywords : quantitative precipitation forecast * quantitative precipitation estimate * NWP model COSMO
Subject RIV: DG - Athmosphere Sciences, Meteorology
http://www.meteo.fr/cic/meetings/2012/ERAD/extended_abs/NWP_323_ext_abs.pdf

The study presents results of modeller oriented comparative QPF verification by using two types of gauge-adjusted radar-based QPE as verification data. Heavy convective rainfalls occuring during 14days of the flash flood period in 2009 were analysed by two techniques that produce gauge adjusted radarbased QPE. The first one, MERGE, is used operationally in the Czech Met Service, the second one, Modified Reflectivity Ratio, was proposed in IAP ASCR. The both radar-based data sets were used as verification data in evaluating the accuracy of 54 prognostic 3h rainfall fields. The verification applied traditional scores and spatial techniques, FSS and SAL. The forecasts were produced by two NWP models. The operational hydrostatic ALADIN-CE model was run in the Czech hydrometeorological institute with horizontal resolution 9km and 4.71km. The next QPFs were produced by nonhydrostatic COSMO model of the German weather service (DWD) and we analyse forecasts with the horizontal resolution of 7km and 2.8km. We compare the model performances at various spatial scales. We discuss the potential of various verification techniques and their combined information. The work was done in the COST ES0905 collaboration and it aims at the development of verification procedure suitable for the evaluation of various parameterization schemes of deep convection in high resolution NWP models.
Permanent Link: http://hdl.handle.net/11104/0223963