@article{fdi:010077191,
  title = {{N}atural decadal sea-level variability in the {I}ndian {O}cean : lessons from {CMIP} models},
  author = {{N}idheesh, {A}. {G}. and {L}engaigne, {M}atthieu and {V}ialard, {J}{\'e}r{\^o}me and {I}zumo, {T}akeshi and {U}nnikrishnan, {A}. {S}. and {K}rishnan, {R}.},
  editor = {},
  language = {{ENG}},
  abstract = {{I}ndian {O}cean decadal sea-level variability is an active research area, with many unresolved questions due to inadequate observational coverage. {I}n this study, we analyse 26 {C}oupled {M}odel {I}ntercomparison {P}roject ({CMIP}) pre-industrial simulations and isolate two consistent modes of {I}ndian {O}cean variability, which collectively explain about 50% of the total decadal sea-level variance. {W}ith opposite sea-level signals in the southwestern and eastern {I}ndian {O}cean, the first mode is related to decadal modulation of the {I}ndian {O}cean {D}ipole ({DIOD}) and equatorial wind-driven dynamics. {T}hough {IOD} is more independent of the {E}l {N}ino-{S}outhern {O}scillation ({ENSO}) at decadal (r similar to 0.4) than interannual (r similar to 0.6) timescales, the {DIOD}-{ENSO} co-variability yields sea-level signals along the west coast of {A}ustralia, transmitted from the western {P}acific via the {I}ndonesian {T}hroughflow. {T}he second mode encompasses variability in the south {I}ndian {O}cean ({SIODV}), exhibiting a broad monopolar sea-level pattern east of {M}adagascar. {I}n about half of the models, the {SIODV} is largely independent from {DIOD} (and decadal {ENSO}) and driven by south {I}ndian {O}cean wind-stress curl associated with meridional shifts in the {M}ascarene {H}igh ({MH}). {I}n the other models, the {SIODV} lags the {DIOD} about 3 years. {I}n those models, in addition to {MH} forcing, the {DIOD}-related alongshore wind stress off the northwest {A}ustralian coast triggers {R}ossby waves that also contribute to the {SIODV}, further west. {T}he {DIOD} and {MH} forcing are mutually independent (r similar to 0.2). {T}he results are broadly consistent with sea-level variations derived from the short altimeter data, despite an underestimation of the {O}ceanic bridge signals in {CMIP} models.},
  keywords = {{N}atural decadal climate variability ; {S}ea level ; {I}ndian {O}cean ; {I}ndian {O}cean {D}ipole ({IOD}) ; {E}l {N}ino {S}outhern {O}scillation ({ENSO}) ; {CMIP} ; {OCEAN} {INDIEN}},
  booktitle = {},
  journal = {{C}limate {D}ynamics},
  volume = {53},
  numero = {9-10},
  pages = {5653--5673},
  ISSN = {0930-7575},
  year = {2019},
  DOI = {10.1007/s00382-019-04885-z},
  URL = {https://www.documentation.ird.fr/hor/fdi:010077191},
}