@article{fdi:010065457,
  title = {{S}easonal and interannual variability of sea-air {CO}2 fluxes in the tropical {A}tlantic affected by the {A}mazon {R}iver plume},
  author = {{I}banhez, {J}. {S}. {P}. and {D}iverr{\`e}s, {D}enis and {A}raujo, {M}. and {L}ef{\`e}vre, {N}athalie},
  editor = {},
  language = {{ENG}},
  abstract = {{CO}2 fugacities obtained from a merchant ship sailing from {F}rance to {F}rench {G}uyana were used to explore the seasonal and interannual variability of the sea-air {CO}2 exchange in the western tropical {N}orth {A}tlantic ({TNA}; 5-14 degrees {N}, 41-52 degrees {W}). {T}wo distinct oceanic water masses were identified in the area associated to the main surface currents, i.e., the {N}orth {B}razil {C}urrent ({NBC}) and the {N}orth {E}quatorial {C}urrent ({NEC}). {T}he {NBC} was characterized by permanent {CO}2 oversaturation throughout the studied period, contrasting with the seasonal pattern identified in the {NEC}. {T}he {NBC} retroflection was the main contributor to the {N}orth {E}quatorial {C}ounter {C}urrent ({NECC}), thus spreading into the central {TNA}, the {A}mazon {R}iver plume, and the {CO}2-rich waters probably originated from the equatorial upwelling. {S}trong {CO}2 undersaturation was associated to the {A}mazon {R}iver plume. {T}otal inorganic carbon drawdown due to biological activity was estimated to be 154 mu mol kg(-1) within the river plume. {A}s a consequence, the studied area acted as a net sink of atmospheric {CO}2 (from -72.2 +/- 10.2 mmol m(-2) month(-1) in {F}ebruary to 14.3 +/- 4.5 mmol m(-2) month(-1) in {M}ay). {T}his contrasted with the net {CO}2 efflux estimated by the main global sea-air {CO}2 flux climatologies. {I}nterannual sea surface temperature changes in the {TNA} caused by large-scale climatic events could determine the direction and intensity of the sea-air {CO}2 fluxes in the {NEC}. {P}ositive temperature anomalies observed in the {TNA} led to an almost permanent {CO}2 outgassing in the {NEC} in 2010.},
  keywords = {{ATLANTIQUE} ; {AMAZONE} ; {ZONE} {TROPICALE}},
  booktitle = {},
  journal = {{G}lobal {B}iogeochemical {C}ycles},
  volume = {29},
  numero = {10},
  pages = {1640--1655},
  ISSN = {0886-6236},
  year = {2015},
  DOI = {10.1002/2015gb005110},
  URL = {https://www.documentation.ird.fr/hor/fdi:010065457},
}