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Open AccessArticle

Dynamical Downscaling of ERA5 Data on the North-Western Mediterranean Sea: From Atmosphere to High-Resolution Coastal Wave Climate

1
LaMMA Consortium, Via Madonna del Piano, 10, 50019 Sesto Fiorentino (FI), Italy
2
National Research Council IBE, Via Madonna del Piano, 10, 50019 Sesto Fiorentino (FI), Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Thomas Mortlock
J. Mar. Sci. Eng. 2021, 9(2), 208; https://doi.org/10.3390/jmse9020208
Received: 29 December 2020 / Revised: 11 February 2021 / Accepted: 12 February 2021 / Published: 17 February 2021
(This article belongs to the Special Issue Wave Climates)
A 29-year wind/wave hindcast is produced over the Mediterranean Sea for the period 1990–2018. The dataset is obtained by downscaling the ERA5 global atmospheric reanalyses, which provide the initial and boundary conditions for a numerical chain based on limited-area weather and wave models: the BOLAM, MOLOCH and WaveWatch III (WW3) models. In the WW3 computational domain, an unstructured mesh is used. The variable resolutions reach up to 500 m along the coasts of the Ligurian and Tyrrhenian seas (Italy), the main objects of the study. The wind/wave hindcast is validated using observations from coastal weather stations and buoys. The wind validation provides velocity correlations between 0.45 and 0.76, while significant wave height correlations are much higher—between 0.89 and 0.96. The results are also compared to the original low-resolution ERA5 dataset, based on assimilated models. The comparison shows that the downscaling improves the hindcast reliability, particularly in the coastal regions, and especially with regard to wind and wave directions. View Full-Text
Keywords: wind/wave hindcast; Mediterranean Sea; dynamical downscaling; ERA5 data; BOLAM; MOLOCH; WAVEWATCH III; unstructured grid wind/wave hindcast; Mediterranean Sea; dynamical downscaling; ERA5 data; BOLAM; MOLOCH; WAVEWATCH III; unstructured grid
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MDPI and ACS Style

Vannucchi, V.; Taddei, S.; Capecchi, V.; Bendoni, M.; Brandini, C. Dynamical Downscaling of ERA5 Data on the North-Western Mediterranean Sea: From Atmosphere to High-Resolution Coastal Wave Climate. J. Mar. Sci. Eng. 2021, 9, 208. https://doi.org/10.3390/jmse9020208

AMA Style

Vannucchi V, Taddei S, Capecchi V, Bendoni M, Brandini C. Dynamical Downscaling of ERA5 Data on the North-Western Mediterranean Sea: From Atmosphere to High-Resolution Coastal Wave Climate. Journal of Marine Science and Engineering. 2021; 9(2):208. https://doi.org/10.3390/jmse9020208

Chicago/Turabian Style

Vannucchi, Valentina; Taddei, Stefano; Capecchi, Valerio; Bendoni, Michele; Brandini, Carlo. 2021. "Dynamical Downscaling of ERA5 Data on the North-Western Mediterranean Sea: From Atmosphere to High-Resolution Coastal Wave Climate" J. Mar. Sci. Eng. 9, no. 2: 208. https://doi.org/10.3390/jmse9020208

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