RT info:eu-repo/semantics/article
T1 Wind kinetic energy climatology and effective resolution for the ERA5 reanalysis
A1 Bolgiani, Pedro
A1 Calvo Sancho, Carlos
A1 Díaz Fernández, Javier
A1 Quitián Hernández, Lara
A1 Sastre Marugán, Mariano
A1 Santos Muñoz, Daniel
A1 Farrán Martín, José Ignacio
A1 González Alemán, Juan Jesús
A1 Valero, Francisco
A1 Martín Pérez, María Luisa
K1 Energy spectrum
K1 Effective resolution
K1 Climatology
K1 ERA5
K1 25 Ciencias de la Tierra y del Espacio
AB ERA5 represents the state of the art for atmospheric reanalyses and is widely used in meteorological and climatological research. In this work, this dataset is evaluated using the wind kinetic energy spectrum. Seasonal climatologies are generated for 30° latitudinal bands in the Northern Hemisphere (periodic domain) and over the North Atlantic area (limited-area domain). The spectra are also assessed to determine the effective resolution of the reanalysis. The results present notable differences between the latitudinal domains, indicating that ERA5 is properly capturing the synoptic conditions. The seasonal variability is adequate too, being winter the most energetic, and summer the least energetic season. The limited area domain results introduce a larger energy density and range. Despite the good results for the synoptic scales, the reanalysis’ spectra are not able to properly reproduce the dissipation rates at mesoscale. This is a source of uncertainties which needs to be taken into account when using the dataset. Finally, a cyclone tropical transition is presented as a case study. The spectrum generated shows a clear difference in energy density at every wavelength, as expected for a highly-energetic status of the atmosphere.
PB Springer
SN 0930-7575
YR 2022
FD 2022
LK https://uvadoc.uva.es/handle/10324/52257
UL https://uvadoc.uva.es/handle/10324/52257
LA eng
NO Climate Dynamics, 2022.
NO Producción Científica
DS UVaDOC
RD 18-may-2024