@article{fdi:010052863,
  title = {{O}rigin of {CO}2 undersaturation in the western tropical {A}tlantic},
  author = {{L}ef{\`e}vre, {N}athalie and {D}iverr{\`e}s, {D}enis and {G}allois, {F}rancis},
  editor = {},
  language = {{ENG}},
  abstract = {{U}nderway f{CO}(2) has been measured from two merchant ships sailing from {F}rance to {F}rench {G}uyana and {F}rance to {B}razil, and during two zonal cruises from {A}frica to {F}rench {G}uyana. {I}n the western {T}ropical {A}tlantic, the strongest undersaturation is associated with the {A}mazon discharge near 55 degrees {W}. {I}n the 5 degrees {S}-10 degrees {N}, 65-35 degrees {W} region, the carbon system is strongly correlated to salinity and robust empirical relationships could be determined. {T}his region is a sink of {CO}2 in {M}ay-{J}une during the high-flow period of the {A}mazon river. {T}he eastward propagation of {A}mazon waters is observed when the retroflection of the {N}orth {B}razil {C}urrent takes place. {I}n {A}ugust 2008, freshwater is observed as far as 40 degrees {W} when the {N}orth {E}quatorial {C}ounter {C}urrent is quite strong. {T}he {A}mazon plume, defined as salinities less than 34.9, is a sink of {CO}2 of 0.96 mmol m-2 d-1. {F}urther east, near 27 degrees {W}, {CO}2 undersaturation is recorded thoughout the year between 5 degrees {N} and 8 degrees {N}. {T}his is caused by the high precipitation associated with the presence of the intertropical convergence zone ({ITCZ}). {R}emoving the temperature effect leads to low (high) f{CO}(2) associated with low (high) salinities in boreal summer (winter), which is consistent with the seasonal migration of the {ITCZ}.},
  keywords = {},
  booktitle = {},
  journal = {{T}ellus {S}eries {B}. {C}hemical and {P}hysical {M}eteorology},
  volume = {62},
  numero = {5},
  pages = {595--607},
  ISSN = {0280-6509},
  year = {2010},
  DOI = {10.1111/j.1600-0889.2010.00475.x},
  URL = {https://www.documentation.ird.fr/hor/fdi:010052863},
}