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Provedor de dados:  ArchiMer
País:  France
Título:  Ocean Circulation Drives the Variability of the Carbon System in the Eastern Tropical Atlantic
Autores:  Lefèvre, Nathalie
Mejia, Carlos
Khvorostyanov, Dmitry
Beaumont, Laurence
Koffi, Urbain
Data:  2021
Ano:  2021
Palavras-chave:  Carbon cycle
Tropical Atlantic
Dissolved inorganic carbon
Alkalinity
Resumo:  The carbon system in the eastern tropical Atlantic remains poorly known. The variability and drivers of the carbon system are assessed using surface dissolved inorganic carbon (DIC), alkalinity (TA) and fugacity of CO2 (fCO2) measured in the 12° N–12° S, 12° W–12° E region from 2005 to 2019. A relationship linking DIC to temperature, salinity and year has been determined, with salinity being the strongest predictor. The seasonal variations of DIC, ranging from 80 to 120 mol kg−1, are more important than the year-to-year variability that is less than 50 mol kg−1 over the 2010–2019 period. DIC and TA concentrations are lower in the northern part of the basin where surface waters are fresher and warmer. Carbon supply dominates over biological carbon uptake during the productive upwelling period from July to September. The lowest DIC and TA are located in the Congo plume. The influence of the Congo is still observed at the mooring at 6° S, 8° E as shown by large salinity and chlorophyll variations. Nevertheless, this site is a source of CO2 emissions into the atmosphere.
Tipo:  Text
Idioma:  Inglês
Identificador:  https://archimer.ifremer.fr/doc/00678/79046/81494.pdf

DOI:10.3390/oceans2010008

https://archimer.ifremer.fr/doc/00678/79046/
Editor:  MDPI
Relação:  info:eu-repo/grantAgreement/EC/FP7/633211/EU//AtlantOS
Formato:  application/pdf
Fonte:  Oceans (2673-1924) (MDPI), 2021 , Vol. 2 , N. 1 , P. 126-148
Direitos:  info:eu-repo/semantics/openAccess

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