@article{fdi:010062036,
  title = {{R}esponse of north {A}tlantic ocean circulation to atmospheric weather regimes},
  author = {{B}arrier, {N}. and {C}assou, {C}. and {D}eshayes, {J}ulie and {T}reguier, {A}. {M}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A} new framework is proposed for investigating the atmospheric forcing of {N}orth {A}tlantic {O}cean circulation. {I}nstead of using classical modes of variability, such as the {N}orth {A}tlantic {O}scillation ({NAO}) or the east {A}tlantic pattern, the weather regimes paradigm was used. {U}sing this framework helped avoid problems associated with the assumptions of orthogonality and symmetry that are particular to modal analysis and known to be unsuitable for the {NAO}. {U}sing ocean-only historical and sensitivity experiments, the impacts of the four winter weather regimes on horizontal and overturning circulations were investigated. {T}he results suggest that the {A}tlantic {R}idge ({AR}), negative {NAO} ({NAO}(-)), and positive {NAO} ({NAO}(+)) regimes induce a fast (monthly-to-interannual time scales) adjustment of the gyres via topographic {S}verdrup dynamics and of the meridional overturning circulation via anomalous {E}kman transport. {T}he wind anomalies associated with the {S}candinavian blocking regime ({SBL}) are ineffective in driving a fast wind-driven oceanic adjustment. {T}he response of both gyre and overturning circulations to persistent regime conditions was also estimated. {AR} causes a strong, wind-driven reduction in the strengths of the subtropical and subpolar gyres, while {NAO}(+) causes a strengthening of the subtropical gyre via wind stress curl anomalies and of the subpolar gyre via heat flux anomalies. {NAO}(-) induces a southward shift of the gyres through the southward displacement of the wind stress curl. {T}he {SBL} is found to impact the subpolar gyre only via anomalous heat fluxes. {T}he overturning circulation is shown to spin up following persistent {SBL} and {NAO}(+) and to spin down following persistent {AR} and {NAO}(-) conditions. {T}hese responses are driven by changes in deep water formation in the {L}abrador {S}ea.},
  keywords = {{C}irculation ; {D}ynamics ; {M}eridional overturning circulation ; {A}tm ; {O}cean ; {S}tructure ; {P}henomena ; {G}yres ; {N}orth {A}tlantic {O}scillation ; {W}ind ; {P}hysical ; {M}eteorology and {C}limatology ; {C}limate classification regimes ; {M}odels and modeling ; {O}cean models ; {ATLANTIQUE} {NORD}},
  booktitle = {},
  journal = {{J}ournal of {P}hysical {O}ceanography},
  volume = {44},
  numero = {1},
  pages = {179--201},
  ISSN = {0022-3670},
  year = {2014},
  DOI = {10.1175/jpo-d-12-0217.1},
  URL = {https://www.documentation.ird.fr/hor/fdi:010062036},
}