RT info:eu-repo/semantics/article
T1 Numerical simulation of a heavy precipitation event in the vicinity of Madrid-Barajas International Airport: Sensitivity to initial conditions, domain resolution, and microphysics parameterizations
A1 Bolgiani, Pedro
A1 Fernández González, Sergio
A1 Valero, Francisco
A1 Merino, Andrés
A1 García Ortega, Eduardo
A1 Sánchez, José Luis
A1 Martín Pérez, María Luisa
K1 Heavy precipitation
K1 WRF model
K1 Validation
K1 Parameterization schemes
K1 Domain resolution
K1 12 Matemáticas
K1 25 Ciencias de la Tierra y del Espacio
AB Deep convection is a threat to many human activities, with a great impact on aviationsafety. On 7 July 2017, a widespread torrential precipitation event (associated with a cut-off low atmid-levels) was registered in the vicinity of Madrid, causing serious flight disruptions. During thistype of episode, accurate short-term forecasts are key to minimizing risks to aviation. The aim ofthis research is to improve early warning systems by obtaining the best WRF model setup. In thispaper, the aforementioned event was simulated. Various model configurations were producedusing four different physics parameterizations, 3-km and 1-km domain resolutions, and 0.25◦and 1◦ initial condition resolutions. Simulations were validated using data from 17 rain gaugestations. Two validation indices are proposed, accounting for the temporal behaviour of the model.Results show significant differences between microphysics parameterizations. Validation of domainresolution shows that improvement from 3 to 1 km is negligible. Interestingly, the 0.25◦ resolutionfor initial conditions produced poor results compared with 1◦. This may be linked to a timing error,because precipitation was simulated further east than observed. The use of ensembles generated bycombining different WRF model configurations produced reliable precipitation estimates.
PB MDPI
SN 2073-4433
YR 2018
FD 2018
LK https://uvadoc.uva.es/handle/10324/55962
UL https://uvadoc.uva.es/handle/10324/55962
LA eng
NO Atmosphere, 2018, vol. 9, n. 9, p. 329
NO Producción Científica
DS UVaDOC
RD 24-nov-2024