@article{fdi:010082047,
  title = {{A} realistic {G}reenland ice sheet and surrounding glaciers and ice caps melting in a coupled climate model},
  author = {{D}evilliers, {M}. and {S}wingedouw, {D}. and {M}ignot, {J}uliette and {D}eshayes, {J}. and {G}arric, {G}. and {A}yache, {M}.},
  editor = {},
  language = {{ENG}},
  abstract = {{G}reenland ice sheet experienced an intensive melting in the last century, especially in the 1920s and over the last decades. {T}he supplementary input into the ocean could disrupt the freshwater budget of the {N}orth {A}tlantic. {S}imultaneously, some signs of a recent weakening of the {A}tlantic {M}eridional {O}verturning {C}irculation ({AMOC}) have been reported. {I}n order to better understand the possible impact of the increasing melting on the {N}orth {A}tlantic circulation, salinity and temperature trends, we construct an observation-based estimate of the freshwater fluxes spanning from 1840 to 2014. {T}he estimate is based on runoff fluxes coming from {G}reenland ice sheet and surrounding glaciers and ice caps. {I}nput from iceberg melting is also included and spatially distributed over the {N}orth {A}tlantic following an observed climatology. {W}e force a set of historical simulations of the {IPSL}-{CM}6{A}-{LR} coupled climate model with this reconstruction from 1920 to 2014. {T}he ten-member ensemble mean displays freshened and cooled waters around {G}reenland, which spread in the subpolar gyre, and then towards the subtropical gyre and the {N}ordic {S}eas. {O}ver the whole period, the convection is reduced in the {L}abrador and {N}ordic {S}eas, while it is slightly enhanced in the {I}rminger {S}ea, and the {AMOC} is weakened by 0.32 +/- 0.35 {S}v at 26 degrees {N}. {T}he multi-decadal trend of the {N}orth {A}tlantic surface temperature obtained with the additional freshwater forcing is slightly closer to observations than in standard historical simulations, although the two trends are only different at the 90% confidence level. {S}light improvement of the {R}oot {M}ean {S}quare {E}rror with respect to observations in the subpolar gyre region suggests that part of the surface temperature variability over the recent decades may have been forced by the release of freshwater from {G}reenland and surrounding regions since the 1920s. {F}inally, we highlight that the {AMOC} decrease due to {G}reenland melting remains modest in these simulations and can only explain a very small amount of the 3 +/- 1 {S}v weakening suggested in a recent study.},
  keywords = {{G}reenland melting ; {AMOC} ; {S}ubpolar gyre ; {ATLANTIQUE} {NORD} ; {DANEMARK} ; {GROENLAND}},
  booktitle = {},
  journal = {{C}limate {D}ynamics},
  volume = {[{E}arly access]},
  numero = {},
  pages = {[23 p.]},
  ISSN = {0930-7575},
  year = {2021},
  DOI = {10.1007/s00382-021-05816-7},
  URL = {https://www.documentation.ird.fr/hor/fdi:010082047},
}