@article{PAR00000704,
  title = {{B}iogeochemical impact of tropical instability waves in the equatorial {P}acific - art. no. {L}24615},
  author = {{G}orgues, {T}. and {M}enk{\`e}s, {C}hristophe and {A}umont, {O}livier and {V}ialard, {J}{\'e}r{\^o}me and {D}andonneau, {Y}ves and {B}opp, {L}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}ropical {I}nstability {W}aves ({TIW}) have been suggested to fertilize the equatorial {P}acific in iron leading to enhanced ecosystem productivity. {U}sing a coupled dynamical-biogeochemical model, we show that contrary to this suggestion, {TIW}s induce a decrease of iron concentration by 10% at the equator and by about 3% over the {W}yrtki box [90 degrees {W}-180, 5 degrees {N}-5 degrees {S}]. {C}hlorophyll decreases by 10% at the equator and 1% over the {W}yrtki box. {T}his leads to a decrease of new production up to 10% at the equator (4% over the {W}yrtki box). {TIW}-induced horizontal advection exports iron-rich equatorial water to the north, but also brings iron-depleted water to the equator leading to a net decrease in iron. {A}dditional iron decrease is caused by {TIW}-induced iron vertical diffusion. {T}hese two mechanisms are partly counter balanced by a decrease of iron biological uptake, driven by lower phytoplankton concentrations, and to a lesser extent by {TIW}-induced iron vertical advection.},
  keywords = {},
  booktitle = {},
  journal = {{G}eophysical {R}esearch {L}etters},
  volume = {32},
  numero = {24},
  pages = {{NIL}_45--{NIL}_49},
  ISSN = {0094-8276},
  year = {2005},
  DOI = {10.1029/2005{GL}024110},
  URL = {https://www.documentation.ird.fr/hor/{PAR}00000704},
}