@article{fdi:010086870,
  title = {{F}orcing mechanisms of the interannual sea level variability in the midlatitude {S}outh {P}acific during 2004-2020},
  author = {{G}ermineaud, {C}. and {V}olkov, {D}. {L}. and {C}ravatte, {S}ophie and {L}lovel, {W}.},
  editor = {},
  language = {{ENG}},
  abstract = {{O}ver the past few decades, the global mean sea level rise and superimposed regional fluctuations of sea level have exerted considerable stress on coastal communities, especially in low-elevation regions such as the {P}acific {I}slands in the western {S}outh {P}acific {O}cean. {T}his made it necessary to have the most comprehensive understanding of the forcing mechanisms that are responsible for the increasing rates of extreme sea level events. {I}n this study, we explore the causes of the observed sea level variability in the midlatitude {S}outh {P}acific on interannual time scales using observations and atmospheric reanalyses combined with a 1.5 layer reduced-gravity model. {W}e focus on the 2004-2020 period, during which the {A}rgo's global array allowed us to assess year-to-year changes in steric sea level caused by thermohaline changes in different depth ranges (from the surface down to 2000 m). {W}e find that during the 2015-2016 {E}l {N}ino and the following 2017-2018 {L}a {N}ina, large variations in thermosteric sea level occurred due to temperature changes within the 100-500 dbar layer in the midlatitude southwest {P}acific. {I}n the western boundary region (from 30 degrees {S} to 40 degrees {S}), the variations in halosteric sea level between 100 and 500 dbar were significant and could have partially balanced the corresponding changes in thermosteric sea level. {W}e show that around 35 degrees {S}, baroclinic {R}ossby waves forced by the open-ocean wind-stress forcing account for 40 to 75% of the interannual sea level variance between 100 degrees {W} and 180 degrees, while the influence of remote sea level signals generated near the {C}hilean coast is limited to the region east of 100 degrees {W}. {T}he contribution of surface heat fluxes on interannual time scales is also considered and shown to be negligible.},
  keywords = {{S}outh {P}acific {O}cean ; interannual sea level variability ; surface forcing ; mechanisms ; upper-ocean warming ; {PACIFIQUE} ; {PACIFIQUE} {ILES} ; {PACIFIQUE} {SUD}},
  booktitle = {},
  journal = {{R}emote {S}ensing},
  volume = {15},
  numero = {2},
  pages = {352 [20 p.]},
  year = {2023},
  DOI = {10.3390/rs15020352},
  URL = {https://www.documentation.ird.fr/hor/fdi:010086870},
}