@article{fdi:010043761,
  title = {{O}bserved equatorial {R}ossby waves and {ENSO}-related warm water volume changes in the equatorial {P}acific {O}cean - art. no. {C}06003},
  author = {{B}osc, {C}. and {D}elcroix, {T}hierry},
  editor = {},
  language = {{ENG}},
  abstract = {{M}odifications of the volume of warm water above the thermocline in the equatorial {P}acific are thought to be critical for {ENSO} ( {E}l {N}ino {S}outhern {O}scillation) preconditioning, development and prediction. {I}n this paper, changes in this {W}arm {W}ater {V}olume ({WWV}) are first reviewed from the literature, and then analyzed within 5 degrees {N}-5 degrees {S} in using 1992-2006 altimeter-derived sea level anomalies ({SLA}) and in situ observations. {W}e conclude that the 1992-2006 {WWV} changes in the equatorial band are a residual from the opposite effects of zonally integrated meridional {E}kman and geostrophic transports of warm water, the latter being estimated from {SLA} and validated against in situ observations. {F}or the first time with observations, we evidence first baroclinic first meridional mode equatorial {R}ossby waves to be responsible for the anomalous meridional geostrophic transports of warm water, in changing the basin-scale zonal pressure gradient. {T}hese transports appear in phase opposition and proportional to the anomalous {S}ea {S}urface {T}emperature ({SST}) in the region {NINO}3.4( 170 degrees {W}-120 degrees {W}, 5 degrees {N}-5 degrees {S}). {T}he links between our observational results and the recharge/ discharge oscillator theory, the differences in {WWV} between {ENSO} events, and the hint for possible recent changes in the relation between {WWV} and {NINO}3.4 {SST} are discussed.},
  keywords = {{PACIFIQUE}},
  booktitle = {},
  journal = {{J}ournal of {G}eophysical {R}esearch-{O}ceans},
  volume = {113},
  numero = {{C}6},
  pages = {6003},
  ISSN = {0148-0227},
  year = {2008},
  DOI = {10.1029/2007{JC}004613},
  URL = {https://www.documentation.ird.fr/hor/fdi:010043761},
}