@article{fdi:010061259,
  title = {{I}mpact of the winter {N}orth-{A}tlantic weather regimes on subtropical sea-surface height variability},
  author = {{B}arrier, {N}. and {T}reguier, {A}. {M}. and {C}assou, {C}. and {D}eshayes, {J}ulie},
  editor = {},
  language = {{ENG}},
  abstract = {{I}nterannual variability of subtropical sea-surface-height ({SSH}) anomalies, estimated by satellite and tide-gauge data, is investigated in relation to wintertime daily {N}orth-{A}tlantic weather regimes. {S}ea-level anomalies can be viewed as proxies for the subtropical gyre intensity because of the intrinsic baroclinic structure of the circulation. {O}ur results show that the strongest correlation between {SSH} and weather regimes is found with the so-called {A}tlantic-{R}idge ({AR}) while no significant values are obtained for the other regimes, including those related to the {N}orth {A}tlantic {O}scillation ({NAO}), known as the primary actor of the {A}tlantic dynamics. {W}intertime {AR} events are characterized by anticyclonic wind anomalies off {E}urope leading to a northward shift of the climatological wind-stress curl. {T}he latter affects subtropical {SSH} annual variability by altered {S}verdrup balance and ocean {R}ossby wave dynamics propagating westward from the {A}frican coast towards the {C}aribbean. {T}he use of a simple linear planetary geostrophic model allows to quantify those effects and confirms the primary importance of the winter season to explain the largest part of {SSH} interannual variability in the {A}tlantic subtropical gyre. {O}ur results open new perspectives in the comprehension of {N}orth-{A}tlantic {O}cean variability emphasizing the role of {AR} as a driver of interannual variability at least of comparable importance to {NAO}.},
  keywords = {{ATLANTIQUE} {NORD}},
  booktitle = {},
  journal = {{C}limate {D}ynamics},
  volume = {41},
  numero = {5-6},
  pages = {1159--1171},
  ISSN = {0930-7575},
  year = {2013},
  DOI = {10.1007/s00382-012-1578-7},
  URL = {https://www.documentation.ird.fr/hor/fdi:010061259},
}