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Abstract: A performance evaluation is conducted for a state-of-the-art Coupled Model Intercomparison Project Phase 6 (CMIP6)-derived ensemble of global wave climate simulations. A single-model (forcing), single-scenario approach is considered to build the ensemble, where the differentiating factor between each member is the wave model or physics parameterization used to simulate waves. The 7-member ensemble is evaluated for the 1995-2014 historical period, highlighting the impact of the multiple source terms on its robustness. The ensemble?s ability to accurately represent the present wave climate is assessed through an extensive comparison with long-term ERA5 reanalysis and in-situ observational data. Relevant aspects such as the depiction of extremes and natural wave climate variability are analyzed, and inter-member uncertainties are quantified. Overall, the results indicate that the ensemble is able to accurately simulate the global wave climate, regarding the significant wave height (???? ), mean and peak wave periods (???? and ????, respectively) and mean wave direction (???? ??). However, we show that using multiple wave models and parameterizations should be cautiously considered when building ensembles, even under the same forcing conditions. Model- parameterization-induced ensemble spreads during the historical period are found to be high, compromising the robustness of projecte anges in wave parameters towards the end of the 21st century across several areas of the global ocean.
Fuente: Ocean Modelling, 2023, 184, 102237
Editorial: Elsevier Ltd
Fecha de publicación: 01/08/2023
Nº de páginas: 21
Tipo de publicación: Artículo de Revista
DOI: 10.1016/j.ocemod.2023.102237
ISSN: 1463-5003,1463-5011
Url de la publicación: https://doi.org/10.1016/j.ocemod.2023.102237
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LEMOS, GIL
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KAMRANZAD, BAHAREH
BIDLOT, JEAN
HECTOR LOBETO ALONSO
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