Assimilation of extrapolated radar reflectivity into a NWP model and its impact on a precipitation forecast at high resolution

0361648 - ÚFA 2012 RIV NL eng J - Článek v odborném periodiku
Sokol, Zbyněk
Assimilation of extrapolated radar reflectivity into a NWP model and its impact on a precipitation forecast at high resolution.
Atmospheric Research. Roč. 100, 2-3 (2011), s. 201-212. ISSN 0169-8095. E-ISSN 1873-2895
Grant CEP: GA ČR GA205/07/0905; GA MŠMT ME09033
Výzkumný záměr: CEZ:AV0Z30420517
Klíčová slova: Precipitation forecast * Nowcasting * Assimilation of radar reflectivity * Numerical weather prediction * Convective storms
Kód oboru RIV: DG - Vědy o atmosféře, meteorologie
Impakt faktor: 1.911, rok: 2011
http://www.sciencedirect.com/science/article/pii/S0169809510002462

The COSMO NWP model, with a horizontal resolution of 2.8 km, is applied, and radar reflectivity data are assimilated using a water vapour correction method. Two model runs are compared: the first run assimilates observed radar reflectivity, and the second run assimilates observed and extrapolated radar reflectivity. The results of the comparisons indicate that the assimilation of extrapolated radar reflectivity in most cases improves the accuracy of precipitation forecasts for the second and third lead hours.
Trvalý link: http://hdl.handle.net/11104/0198914