@article{fdi:010093554,
  title = {{O}n the importance of riverine organic matter for the {A}mazon plume : a modeling study},
  author = {{G}{\'e}vaudan, {M}. and {J}ouanno, {J}ulien and {A}umont, {O}livier and {B}outin, {J}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he {A}mazon {R}iver is an important freshwater and nutrient source for the tropical {A}tlantic {O}cean, sustaining large phytoplankton blooms that extend hundreds of kilometers from the river mouth. {H}owever, the main drivers of the productivity in the {A}mazon plume are still poorly understood. {T}o address this question, a regional coupled ocean-biogeochemical configuration of the tropical {A}tlantic at 1/4 degrees is used, as well as remote sensing observations of sea surface salinity and ocean color, which allow an improved model treatment of the organic matter of riverine origin. {R}esults reveal that the offshore extension of the productive plume is mainly driven by the large fluxes of terrestrial dissolved organic matter ({TDOM}) supplied by the {A}mazon {R}iver. {T}wo mechanisms by which {TDOM} influences plume extension have been identified. {F}irst, the colored fraction limits the light available for phytoplankton growth, thereby delaying nutrient consumption. {S}econd, {TDOM} supplied by rivers has low lability and is therefore slowly remineralized, providing nutrients throughout the plume until far offshore. {T}he inclusion of these two effects (shading and specific remineralization of {TDOM}) in the model allows for a better representation of {A}mazon plume productivity and offshore extension, something that is generally lacking in regional or global biogeochemical models.},
  keywords = {{A}mazon {R}iver ; river plume ; terrestrial dissolved organic matter ; {NEMO}-{PISCES} ; {ATLANTIQUE} ; {AMAZONE} {COURS} {D}'{EAU} ; {ZONE} {TROPICALE}},
  booktitle = {},
  journal = {{J}ournal of {G}eophysical {R}esearch : {O}ceans},
  volume = {130},
  numero = {5},
  pages = {e2024{JC}021527 [18 p.]},
  ISSN = {2169-9275},
  year = {2025},
  DOI = {10.1029/2024jc021527},
  URL = {https://www.documentation.ird.fr/hor/fdi:010093554},
}