@article{fdi:010060687,
  title = {{A}n assessment of the mixed layer salinity budget in the tropical {P}acific {O}cean. {O}bservations and modelling (1990-2009)},
  author = {{H}asson, {A}. {E}. {A}. and {D}elcroix, {T}hierry and {D}ussin, {R}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}his paper investigates mechanisms controlling the mixed-layer salinity ({MLS}) in the tropical {P}acific during 1990-2009. {W}e use monthly 1{A} degrees a{E}uro parts per thousand x 1{A} degrees gridded observations of salinity, horizontal current and fresh water flux, and a validated ocean general circulation model with no direct {MLS} relaxation in both its full resolution (0.25{A} degrees and 5 days) and re-sampled as the observation time/space grid resolution. {T}he present study shows that the mean spatial distribution of {MLS} results from a subtle balance between surface forcing ({E} -a{E}uro parts per thousand {P}, evaporation minus precipitation), horizontal advection (at low and high frequencies) and subsurface forcing (entrainment and mixing), all terms being of analogous importance. {L}arge-scale seasonal {MLS} variability is found mainly in the {I}ntertropical and {S}outh {P}acific {C}onvergence {Z}ones due to changes in their meridional location (and related heavy {P}), in the {N}orth {E}quatorial {C}ounter {C}urrents, and partly in the subsurface forcing. {M}aximum interannual variability is found in the western {P}acific warm pool and in both convergence zones, in relation to {E}l {N}io {S}outhern {O}scillation ({ENSO}) events. {I}n the equatorial band, this later variability is due chiefly to the horizontal advection of low salinity waters from the western to the central-eastern basin during {E}l {N}io (and vice versa during {L}a {N}ia), with contrasted evolution for the {E}astern and {C}entral {P}acific {ENSO} types. {O}ur findings reveal that all terms of the {MLS} equation, including high-frequency (< 1 month) salinity advection, have to be considered to close the salinity budget, ruling out the use of {MLS} (or sea surface salinity) only to directly infer the mean, seasonal and/or interannual fresh water fluxes.},
  keywords = {{S}ea surface salinity ; {M}ixed-layer budget ; {S}easonal variability ; {I}nterannual variability ; {OCEAN} {PACIFIQUE} ; {ZONE} {TROPICAL}},
  booktitle = {},
  journal = {{O}cean {D}ynamics},
  volume = {63},
  numero = {2-3},
  pages = {179--194},
  ISSN = {1616-7341},
  year = {2013},
  DOI = {10.1007/s10236-013-0596-2},
  URL = {https://www.documentation.ird.fr/hor/fdi:010060687},
}