@article{fdi:010049465,
  title = {{R}evisiting the {L}a {N}ina 1998 phytoplankton blooms in the equatorial {P}acific},
  author = {{G}orgues, {T}. and {M}enk{\`e}s, {C}hristophe and {S}lemons, {L}. and {A}umont, {O}livier and {D}andonneau, {Y}ves and {R}adenac, {M}arie-{H}{\'e}l{\`e}ne and {A}lvain, {S}. and {M}oulin, {C}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A} biogeochemical model of the tropical {P}acific has been used to assess the impact of interannual variability in a western {P}acific iron source on the iron-limited ecosystem of the central and eastern {P}acific during the 1997-1998 {E}l {N}ino {A} reference simulation and two simulations with an iron source in the western {P}acific have been performed {T}he two "source" simulations differed only in the temporal variability of the iron source. {I}n the variable source simulation, the iron concentration in the source region was proportional to the velocity of the {N}ew {G}uinea {C}oastal {U}ndercurrent ({NGCUC}) {I}n the constant source simulation, the same time-averaged concentration of iron was imposed with no temporal variability. {T}he variable source was designed to mimic variations of iron flux from the northeast slope of {N}ew {G}uinea to the {NGCUC} due to modulation of sedimentary iron resuspension as previously hypothesized {T}hrough the comparison of these simulations, it appeared that: (i) an iron source in the {NGCUC}, regardless of its source variability, increases biomass in the eastern equatorial {P}acific because of the greater eastward iron flux by the {E}quatorial {U}ndercurrent and (ii) a variable {NGCUC} iron source does not change the temporal variability of eastern {P}acific chlorophyll, and in particular the timing and intensity of the {J}une 1998 bloom {T}o explain eastern {P}acific biological variability, local rather than remote processes are needed, such as wind-driven upwelling, the local depth of the thermocline. tropical instability waves and biological processes such as high grazing pressure. {T}herefore, while the western {P}acific sources of dissolved iron are important in our model to sustain annually integrated equatorial {P}acific production, they are unlikely to strongly constrain the timing of blooms in the central and eastern {P}acific such as during the 1998 {L}a {N}ina ({C}) 2010 {E}lsevier {L}td. {A}ll rights reserved},
  keywords = {{L}a {N}ina ; {ENSO} ; {E}quatorial {P}acific ; {P}hytoplankton ; {B}looms ; 1997-1998 ; {I}ron ; {M}odel},
  booktitle = {},
  journal = {{D}eep-{S}ea {R}esearch.{P}art {I} : {O}ceanographic {R}esearch {P}apers},
  volume = {57},
  numero = {4},
  pages = {567--576},
  ISSN = {0967-0637},
  year = {2010},
  DOI = {10.1016/j.dsr.2009.12.008},
  URL = {https://www.documentation.ird.fr/hor/fdi:010049465},
}