Data/hora: 09/06/2024 15:31:57

Provedor de dados: 	Institutional Archive of Ifreme (ArchiMer)	
País: 	France	
Título: 	Mesoscale modulation of air-sea CO2 flux in Drake Passage	
Autores: 	Song, Hajoon; Marshall, John; Munro, David R.; Dutkiewicz, Stephanie; Sweeney, Colm; Mcgillicuddy, D. J., Jr.; Hausmann, Ute.	
Data: 	2016-09	
Ano: 	2016	
Palavras-chave: 	CO2 flux; Mesoscale eddy; Southern Ocean; Vertical mixing; Nutrient fluxes.	
Resumo: 	We investigate the role of mesoscale eddies in modulating air-sea CO2 flux and associated biogeochemical fields in Drake Passage using in situ observations and an eddy-resolving numerical model. Both observations and model show a negative correlation between temperature and partial pressure of CO2 (pCO(2)) anomalies at the sea surface in austral summer, indicating that warm/cold anticyclonic/cyclonic eddies take up more/less CO2. In austral winter, in contrast, relationships are reversed: warm/cold anticyclonic/cyclonic eddies are characterized by a positive/negative pCO(2) anomaly and more/less CO2 outgassing. It is argued that DIC-driven effects on pCO(2) are greater than temperature effects in austral summer, leading to a negative correlation. In austral winter, however, the reverse is true. An eddy-centric analysis of the model solution reveals that nitrate and iron respond differently to the same vertical mixing: vertical mixing has a greater impact on iron because its normalized vertical gradient at the base of the surface mixed layer is an order of magnitude greater than that of nitrate.	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	https://archimer.ifremer.fr/doc/00383/49407/49894.pdf

DOI:10.1002/2016JC011714

https://archimer.ifremer.fr/doc/00383/49407/	
Editor: 	Amer Geophysical Union	
Formato: 	application/pdf	
Fonte: 	Journal Of Geophysical Research-oceans (2169-9275) (Amer Geophysical Union), 2016-09 , Vol. 121 , N. 9 , P. 6635-6649	
Fonte: 	2016. American Geophysical Union. All Rights Reserved.

info:eu-repo/semantics/openAccess

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