@article{fdi:010070284,
  title = {{A} source of {CO}2 to the atmosphere throughout the year in the {M}aranhense continental shelf (2 degrees 30 ' {S}, {B}razil)},
  author = {{L}ef{\`e}vre, {N}athalie and {D}ias, {F}. {J}. {D}. and de {T}orres, {A}. {R}. and {N}oriega, {C}. and {A}raujo, {M}. and de {C}astro, {A}. {C}. {L}. and {R}ocha, {C}. and {J}iang, {S}. and {I}banhez, {J}. {S}. {P}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}o reduce uncertainty regarding the contribution of continental shelf areas in low latitude regions to the air-sea {CO}2 exchange, more data are required to understand the carbon turnover in these regions and cover gaps in coverage. {F}or the first time, inorganic carbon and alkalinity were measured along a cross-shelf transect off the coast of {M}aranhao ({N}orth {B}razil) in 9 cruises spawning from {A}pril 2013 to {S}eptember 2014. {O}n the last 4 transects, dissolved organic matter and nutrients were also measured. {T}he highest inorganic and organic carbon concentrations are observed close to land. {A}s a result of low productivity and significant remineralization, heterotrophy dominates along the transect throughout the year. {A}lthough the temporal variability is significantly reduced at the offshore station with carbon concentrations decreasing seaward, the fugacity of {CO}2 (f{CO}(2)) at this station remains significantly higher, especially during the wet season, than the open ocean values measured routinely by a merchant ship further west. {O}verall, the continental shelf is a weak source of {CO}2 to the atmosphere throughout the year with an annual mean flux of 1.81 +/- 0.84 mmol m(-2) d(-1). {T}he highest magnitudes of f{CO}(2) are observed during the wet season when the winds are the weakest. {A}s a result, the {CO}2 flux does not show a clear seasonal pattern. {F}urther offshore, f{CO}(2) is significantly lower than on the continental shelf. {H}owever, the oceanic {CO}2 flux, with an annual mean of 2.32 +/- 1.09 mmol m(-2) d(-1), is not statistically different from the {CO}2 flux at the continental shelf because the wind is stronger in the open ocean.},
  keywords = {{C}arbon dioxide ({CO}2) ; {A}ir-sea {CO}2 flux ; {O}rganic matter ; {C}ontinental shelf of {M}aranhao ; {C}oastal {A}tlantic ; {W}estern tropical {A}tlantic ; {ATLANTIQUE} {OUEST} ; {BRESIL} ; {MARANHAO} ; {ZONE} {TROPICALE}},
  booktitle = {},
  journal = {{C}ontinental {S}helf {R}esearch},
  volume = {141},
  numero = {},
  pages = {38--50},
  ISSN = {0278-4343},
  year = {2017},
  DOI = {10.1016/j.csr.2017.05.004},
  URL = {https://www.documentation.ird.fr/hor/fdi:010070284},
}