%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Ibanhez, J. S. P.
%A Araujo, M.
%A Lefèvre, Nathalie
%T The overlooked tropical oceanic CO2 sink
%D 2016
%L fdi:010066978
%G ENG
%J Geophysical Research Letters
%@ 0094-8276
%K ATLANTIQUE OUEST ; ZONE TROPICAL ; AMAZONE
%M ISI:000378338800024
%N 8
%P 3804-3812
%R 10.1002/2016gl068020
%U https://www.documentation.ird.fr/hor/fdi:010066978
%> https://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers17-03/010066978.pdf
%V 43
%W Horizon (IRD)
%X The intense rainfall in the tropical Atlantic spatially overlaps with the spread of the Amazon plume. Based on remote-sensed sea surface salinity and rainfall, we removed the contribution of rainfall to the apparent Amazon plume area, thus refining the quantification of its extension (0.84 +/- 0.06 x 10(6) km(2) to 0.89 +/- 0.06 x 10(6) km(2)). Despite the previous overestimation of the Amazon plume area due to the influence of rainfall (>16%), our calculated annual CO2 flux based on rainfall-corrected sea surface CO2 fugacity confirms that the Amazon River plume is an atmospheric CO2 sink of global importance (-7.61 +/- 1.01 to -7.85 +/- 1.02 Tg C yr(-1)). Yet we show that current sea-air CO2 flux assessments for the tropical Atlantic could be overestimated in about 10% by neglecting the CO2 sink associated to the Amazon plume. Thus, including the Amazon plume, the sea-air CO2 exchange for the tropical Atlantic is estimated to be 81.1 +/- 1.1 to 81.5 +/- 1.1 Tg C yr(-1).
%$ 032 ; 062