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Article

River Freshwater Contribution in Operational Ocean Models along the European Atlantic Façade: Impact of a New River Discharge Forcing Data on the CMEMS IBI Regional Model Solution

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Puertos del Estado, 28042 Madrid, Spain
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Mercator Ocean International, 31520 Ramonville Saint-Agne, France
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MARETEC/LARSyS, Instituto Superior Técnico, Universidade de Lisboa, 1649-004 Lisbon, Portugal
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CoLAB +ATLANTIC, Molhe Leste, 2520-620 Peniche, Portugal
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Nologin Consulting S.L., 50018 Zaragoza, Spain
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Department of Physical Oceanography, Institute of Marine Sciences, CSIC, Barcelona Expert Center, Pg. Marítim 37-49, E-08003 Barcelona, Spain
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ETT S.p.A, 16153 Genoa, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Alberto Ribotti
J. Mar. Sci. Eng. 2021, 9(4), 401; https://doi.org/10.3390/jmse9040401
Received: 9 March 2021 / Revised: 30 March 2021 / Accepted: 1 April 2021 / Published: 9 April 2021
(This article belongs to the Special Issue Ocean Modelling in Support of Operational Ocean and Coastal Services)
River freshwater contribution in the European Atlantic margin and its influence on the sea salinity field are analyzed. The impacts of using a new river discharge database as part of the freshwater forcing in a regional ocean model are assessed. Ocean model scenarios, based on the CMEMS (Copernicus Marine Environment Monitoring Service) operational IBI-MFC (Iberia Biscay Ireland Monitoring Forecasting Centre) model set-up, are run to test different (observed, modeled and climatological) river and coastal freshwater forcing configurations throughout 2018. The modelled salinity fields are validated, using as a reference all known available in-situ observational data sources. The IBI model application is proven to adequately simulate the regional salinity, and the scenarios showcase the effects of varying imposed river outflows. Some model improvement is achieved using the new forcing (i.e., better capture of salinity variability and more realistic simulation of baroclinic frontal structures linked to coastal and river freshwater buoyancy plumes). Major impacts are identified in areas with bigger river discharges (i.e., the French shelf or the northwestern Iberian coast). Instead, the Portuguese shelf or the Gulf of Cadiz are less impacted by changes in the imposed river inflows, and other dynamical factors in these areas play a major role in the configuration of the regional salinity. View Full-Text
Keywords: river freshwater discharges; operational ocean models; sea surface salinity field; IBI region; LAMBDA river database; IBI model validation; model sensitivity tests river freshwater discharges; operational ocean models; sea surface salinity field; IBI region; LAMBDA river database; IBI model validation; model sensitivity tests
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MDPI and ACS Style

Sotillo, M.G.; Campuzano, F.; Guihou, K.; Lorente, P.; Olmedo, E.; Matulka, A.; Santos, F.; Amo-Baladrón, M.A.; Novellino, A. River Freshwater Contribution in Operational Ocean Models along the European Atlantic Façade: Impact of a New River Discharge Forcing Data on the CMEMS IBI Regional Model Solution. J. Mar. Sci. Eng. 2021, 9, 401. https://doi.org/10.3390/jmse9040401

AMA Style

Sotillo MG, Campuzano F, Guihou K, Lorente P, Olmedo E, Matulka A, Santos F, Amo-Baladrón MA, Novellino A. River Freshwater Contribution in Operational Ocean Models along the European Atlantic Façade: Impact of a New River Discharge Forcing Data on the CMEMS IBI Regional Model Solution. Journal of Marine Science and Engineering. 2021; 9(4):401. https://doi.org/10.3390/jmse9040401

Chicago/Turabian Style

Sotillo, Marcos G., Francisco Campuzano, Karen Guihou, Pablo Lorente, Estrella Olmedo, Ania Matulka, Flavio Santos, María A. Amo-Baladrón, and Antonio Novellino. 2021. "River Freshwater Contribution in Operational Ocean Models along the European Atlantic Façade: Impact of a New River Discharge Forcing Data on the CMEMS IBI Regional Model Solution" Journal of Marine Science and Engineering 9, no. 4: 401. https://doi.org/10.3390/jmse9040401

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