@article{fdi:010060891,
  title = {{P}rocesses of {I}ndia's offshore summer intraseasonal sea surface temperature variability},
  author = {{K}urian, {N}. and {L}engaigne, {M}atthieu and {V}issa, {G}. {V}. and {V}ialard, {J}{\'e}r{\^o}me and {P}ous, {S}. and {P}eter, {A}. {C}. and {D}urand, {F}abien and {N}aik, {S}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A}ctive and break phases of the {I}ndian summer monsoon are associated with sea surface temperature ({SST}) fluctuations at 30-90 days timescale in the {A}rabian {S}ea and {B}ay of {B}engal. {M}echanisms responsible for basin-scale intraseasonal {SST} variations have previously been discussed, but the maxima of {SST} variability are actually located in three specific offshore regions: the {S}outh-{E}astern {A}rabian {S}ea ({SEAS}), the {S}outhern {T}ip of {I}ndia ({STI}) and the {N}orth-{W}estern {B}ay of {B}engal ({NWB}o{B}). {I}n the present study, we use an eddy-permitting 0.25 degrees regional ocean model to investigate mechanisms of this offshore intraseasonal {SST} variability. {M}odelled climatological mixed layer and upper thermocline depth are in very good agreement with estimates from three repeated expendable bathythermograph transects perpendicular to the {I}ndian {C}oast. {T}he model intraseasonal forcing and {SST} variability agree well with observed estimates, although modelled intraseasonal offshore {SST} amplitude is underestimated by 20-30 %. {O}ur analysis reveals that surface heat flux variations drive a large part of the intraseasonal {SST} variations along the {I}ndian coastline while oceanic processes have contrasted contributions depending of the region considered. {I}n the {SEAS}, this contribution is very small because intraseasonal wind variations are essentially cross-shore, and thus not associated with significant upwelling intraseasonal fluctuations. {I}n the {STI}, vertical advection associated with {E}kman pumping contributes to similar to 30 % of the {SST} fluctuations. {I}n the {NWB}o{B}, vertical mixing diminishes the {SST} variations driven by the atmospheric heat flux perturbations by 40 %. {S}imple slab ocean model integrations show that the amplitude of these intraseasonal {SST} signals is not very sensitive to the heat flux dataset used, but more sensitive to mixed layer depth.},
  keywords = {{I}ndian {O}cean ; {I}ntraseasonal variability ; {S}ea surface temperature ; {R}egional ocean model ; {O}ceanic and atmospheric processes ; {OCEAN} {INDIEN}},
  booktitle = {},
  journal = {{O}cean {D}ynamics},
  volume = {63},
  numero = {4},
  pages = {329--346},
  ISSN = {1616-7341},
  year = {2013},
  DOI = {10.1007/s10236-013-0604-6},
  URL = {https://www.documentation.ird.fr/hor/fdi:010060891},
}