@article{fdi:010058855,
  title = {{E}stimating {ENSO} {I}nfluence on the {G}lobal {M}ean {S}ea {L}evel, 1993-2010},
  author = {{C}azenave, {A}. and {H}enry, {O}. and {M}unier, {S}. and {D}elcroix, {T}hierry and {G}ordon, {A}. {L}. and {M}eyssignac, {B}. and {L}lovel, {W}. and {P}alanisamy, {H}. and {B}ecker, {M}.},
  editor = {},
  language = {{ENG}},
  abstract = {{I}nterannual global mean sea level ({GMSL}) variations and {E}l {N}ino-{S}outhern {O}scillation ({ENSO}) are highly correlated, with positive/negative {GMSL} anomalies during {E}l {N}ino/{L}a {N}ina events. {I}n a previous study, we showed that interannual {GMSL} and total land water storage variations are inversely correlated, with lower-than-average total water storage on land and higher-than-average {GMSL} during {E}l {N}ino. {T}his result is in agreement with the observed rainfall deficit/excess over land/oceans during {E}l {N}ino (and vice versa during {L}a {N}ina). {I}t suggests that the positive {GMSL} anomaly observed during {E}l {N}ino is likely due to an ocean mass rather than thermal expansion increase. {H}ere, we analyze the respective contribution of the {A}tlantic, {I}ndian, and {P}acific oceans to the interannual ({ENSO}-related) {GMSL} anomalies observed during the altimetry era (i.e., since 1993) with an emphasis on the 1997/1998 {E}l {N}ino event. {F}or each oceanic region, we compute the steric contribution, and remove it from the altimetry-based mean sea level to estimate the ocean mass component. {W}e find that mass changes of the tropical {P}acific {O}cean, mainly in the region within 025 degrees {N}, are mostly responsible for the observed 1997/1998 {ENSO}-related {GMSL} anomaly. {T}he ocean mass excess of this region almost perfectly compensates the total land water deficit during the 1997/1998 {E}l {N}ino. {A}n estimate of the ocean-atmosphere water balance of this region shows that the time derivative of the ocean mass component is well correlated with net {P}-{E} (precipitation minus evaporation) over most of the study period, except during the 1997/1998 {ENSO} event, where there is a temporary ocean mass increase, not compensated by the net {P}-{E}. {W}e thus propose that the 1997/1998 ocean mass increase of this north tropical {P}acific area be linked to an imbalance between the inflow/outflow entering/leaving the north tropical {P}acific. {A} preliminary qualitative analysis indicates that a significant reduction of the {M}akassar {S}trait transport, (about 80% of the total {I}ndonesian throughflow), as previously reported in the literature during the strong 1997/1998 {E}l {N}ino event, could explain the north tropical {P}acific {O}cean mass excess reported in this study, hence the observed positive {GMSL} anomaly.},
  keywords = {{S}ea level ; {ENSO} ; land waters ; steric sea level ; ocean mass ; {OCEAN} {INDIEN} ; {ATLANTIQUE} ; {PACIFIQUE}},
  booktitle = {},
  journal = {{M}arine {G}eodesy},
  volume = {35},
  numero = {1},
  pages = {82--97},
  ISSN = {0149-0419},
  year = {2012},
  DOI = {10.1080/01490419.2012.718209},
  URL = {https://www.documentation.ird.fr/hor/fdi:010058855},
}