Data/hora: 27/07/2024 02:55:51

Provedor de dados: 	5	
País: 	France	
Título: 	Gyre scale deep convection in the subpolar North-Atlantic Ocean during winter 2014-2015	
Autores: 	Piron, Anne; Thierry, Virginie; Mercier, Herle; Caniaux, G.	
Data: 	2017-02	
Ano: 	2017	
Resumo: 	Using Argo floats, we show that a major deep convective activity occurred simultaneously in the Labrador Sea (LAB), South of Cap Farewell (SCF) and the Irminger Sea (IRM) during winter 2014–2015. Convection was driven by exceptional heat loss to the atmosphere (up to 50% higher than the climatological mean). This is the first observation of deep convection over such a widespread area. Mixed layer depths exceptionally reached 1700 m in SCF and 1400 m in IRM. The deep thermocline density gradient limited the mixed layer deepening in the Labrador Sea to 1800 m. Potential densities of deep waters were similar in the three basins (27.73-27.74 kg m−3), but warmer by 0.3 °C and saltier by 0.04 in IRM than in LAB and SCF, meaning that each basin formed locally its own deep water. The cold anomaly that developed recently in the North-Atlantic Ocean favored and was enhanced by this exceptional convection.	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	http://archimer.ifremer.fr/doc/00370/48072/48175.pdf

http://archimer.ifremer.fr/doc/00370/48072/48176.pdf

DOI:10.1002/2016GL071895

http://archimer.ifremer.fr/doc/00370/48072/	
Editor: 	Amer Geophysical Union	
Relação: 	info:eu-repo/grantAgreement/EC/FP7/633211/EU//AtlantOS	
Formato: 	application/pdf	
Fonte: 	Geophysical Research Letters (0094-8276) (Amer Geophysical Union), 2017-02 , Vol. 44 , N. 3 , P. 1439-1447	
Fonte: 	2016 American Geophysical Union. All rights reserved.

info:eu-repo/semantics/openAccess

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