@article{fdi:010049385,
  title = {{S}ensitivity of {N}orth {A}tlantic subpolar gyre and overturning to stratification-dependent mixing : response to global warming},
  author = {{M}arzeion, {B}. and {L}evermann, {A}. and {M}ignot, {J}uliette},
  editor = {},
  language = {{ENG}},
  abstract = {{W}e use a reduced complexity climate model with a three-dimensional ocean component and realistic topography to investigate the effect of stratification-dependent mixing on the sensitivity of the {N}orth {A}tlantic subpolar gyre ({SPG}), and the {A}tlantic meridional overturning circulation ({AMOC}), to idealized {CO}2 increase and peaking scenarios. {T}he vertical diffusivity of the ocean interior is parameterized as kappa similar to {N} (-{I} +/-), where {N} is the local buoyancy frequency. {F}or all parameter values 0 a parts per thousand currency sign alpha a parts per thousand currency sign 3, we find the {SPG}, and subsequently the {AMOC}, to weaken in response to increasing {CO}2 concentrations. {T}he weakening is significantly stronger for alpha a parts per thousand yen alpha(cr) a parts per thousand 1.5. {D}epending on the value of alpha, two separate model states develop. {T}hese states remain different after the {CO}2 concentration is stabilized, and in some cases even after the {CO}2 concentration has been decreased again to the pre-industrial level. {T}his behaviour is explained by a positive feedback between stratification and mixing anomalies in the {N}ordic {S}eas, causing a persistent weakening of the {SPG}.},
  keywords = {{S}ubpolar gyre ; {G}lobal warming ; {O}cean mixing ; {A}tlantic overturning},
  booktitle = {},
  journal = {{C}limate {D}ynamics},
  volume = {34},
  numero = {5},
  pages = {661--668},
  ISSN = {0930-7575},
  year = {2010},
  DOI = {10.1007/s00382-008-0521-4},
  URL = {https://www.documentation.ird.fr/hor/fdi:010049385},
}