RT info:eu-repo/semantics/article
T1 WRF hourly evaluation for extreme precipitation events
A1 Merino Suances, Andrés
A1 García Ortega, Eduardo
A1 Navarro, Andrés
A1 Sánchez Gómez, José Luis
A1 Tapiador, Francisco J.
A2 Fisica Aplicada
K1 Física
K1 Hourly precipitation
K1 WRF model
K1 Physics parameterizations
K1 Precipitation extreme
AB Precipitation is one of the most relevant fields in atmospheric modeling because of its environmental, social and economic implications. However, precipitation validation from weather model outputs presents substantial challenges, such as measurement uncertainties, use of gridded datasets vs. direct observations, and the selection of statistical goodness-of-fit measures. The main difficulty of working with precipitation is that it can be spatially irregular, especially in extreme events. High temporal aggregation smooths the field and reduces verification uncertainty. For this reason, validations are usually focused on a daily scale. However, many extreme events occur on shorter periods, for which a sub-daily precipitation assessment is required. In this paper, hourly precipitation verification of the Weather Research and Forecasting (WRF) model is explored for 45 extreme precipitation events (EPEs) recorded in northeastern Spain. For this, stations with recorded EPEs were classified according to the hourly distribution of precipitation. WRF simulations were established considering three microphysics and two planetary boundary layer (PBL) parameterizations. Finally, several statistical goodness-of-fit measures and spatial and temporal precipitation distributions were used for evaluating WRF performance. The results showed that microphysics were more important than PBL parameterizations. Goddard and Thompson together with Mellor-Yamada-Nakanishi and Nino PBL gave better results for most of the analyzed characteristics. However, an optimal combination of parameterizations was not obtained for all EPEs, because event characteristics had important effects on model performance.
PB Elsevier
SN 0169-8095
LK http://hdl.handle.net/10612/14752
UL http://hdl.handle.net/10612/14752
NO .
DS BULERIA. Repositorio Institucional de la Universidad de León
RD 27-abr-2024