@article{fdi:010060478,
  title = {{D}ecadal and long-term sea level variability in the tropical {I}ndo-{P}acific {O}cean},
  author = {{N}idheesh, {A}. {G}. and {L}engaigne, {M}atthieu and {V}ialard, {J}{\'e}r{\^o}me and {U}nnikrishnan, {A}. {S}. and {D}ayan, {H}.},
  editor = {},
  language = {{ENG}},
  abstract = {{I}n this study, we analysed decadal and long-term steric sea level variations over 1966-2007 period in the {I}ndo-{P}acific sector, using an ocean general circulation model forced by reanalysis winds. {T}he simulated steric sea level compares favourably with sea level from satellite altimetry and tide gauges at interannual and decadal timescales. {T}he amplitude of decadal sea level variability (up to similar to 5 cm standard deviation) is typically nearly half of the interannual variations (up to similar to 10 cm) and two to three times larger than long-term sea level variations (up to 2 cm). {Z}onal wind stress varies at decadal timescales in the western {P}acific and in the southern {I}ndian {O}cean, with coherent signals in {ERA}-40 (from which the model forcing is derived), {NCEP}, twentieth century and {WASW}ind products. {C}ontrary to the variability at interannual timescale, for which there is a tendency of {E}l {N}io and {I}ndian {O}cean {D}ipole events to co-occur, decadal wind stress variations are relatively independent in the two basins. {I}n the {P}acific, those wind stress variations drive {E}kman pumping on either side of the equator, and induce low frequency sea level variations in the western {P}acific through planetary wave propagation. {T}he equatorial signal from the western {P}acific travels southward to the west {A}ustralian coast through equatorial and coastal wave guides. {I}n the {I}ndian {O}cean, decadal zonal wind stress variations induce sea level fluctuations in the eastern equatorial {I}ndian {O}cean and the {B}ay of {B}engal, through equatorial and coastal wave-guides. {W}ind stress curl in the southern {I}ndian {O}cean drives decadal variability in the south-western {I}ndian {O}cean through planetary waves. {D}ecadal sea level variations in the south-western {I}ndian {O}cean, in the eastern equatorial {I}ndian {O}cean and in the {B}ay of {B}engal are weakly correlated to variability in the {P}acific {O}cean. {E}ven though the wind variability is coherent among various wind products at decadal timescales, they show a large contrast in long-term wind stress changes, suggesting that long-term sea level changes from forced ocean models need to be interpreted with caution.},
  keywords = {{S}ea level ; {S}teric level ; {D}ecadal variability ; {C}limate ; {OCEAN} {INDIEN} ; {OCEAN} {PACIFIQUE} ; {ZONE} {TROPICALE}},
  booktitle = {},
  journal = {{C}limate {D}ynamics},
  volume = {41},
  numero = {2},
  pages = {381--402},
  ISSN = {0930-7575},
  year = {2013},
  DOI = {10.1007/s00382-012-1463-4},
  URL = {https://www.documentation.ird.fr/hor/fdi:010060478},
}