@article{fdi:010083170, title = {{P}resentation and evaluation of the {IPSL}-{CM}6{A}-{LR} ensemble of extended historical simulations}, author = {{B}onnet, {R}. and {B}oucher, {O}. and {D}eshayes, {J}. and {G}astineau, {G}. and {H}ourdin, {F}. and {M}ignot, {J}uliette and {S}ervonnat, {J}. and {S}wingedouw, {D}.}, editor = {}, language = {{ENG}}, abstract = {{T}he {I}nstitut {P}ierre-{S}imon {L}aplace {C}limate {M}odeling {C}enter has produced an ensemble of extended historical simulations using the {IPSL}-{CM}6{A}-{LR} climate model. {T}his ensemble (referred to as {IPSL}-{EHS}) is composed of 32 members over the 1850-2059 period that share the same external forcings but differ in their initial conditions. {I}n this study, we assess the simulated decadal to multidecadal climate variability in the {IPSL}-{EHS}. {I}n particular, we examine the global temperature evolution and recent warming trends, and their consistency with ocean heat content and sea ice cover. {T}he model exhibits a large low-frequency internal climate variability. {I}n particular, a quasi-bicentennial mode of internal climate variability is present in the model and is associated with the {A}tlantic {M}eridional {O}verturning {C}irculation. {S}uch variability modulates the global mean surface air temperature changes over the historical period by about similar to 0.1{K}. {T}his modulation is found to be linked to the phase present in the initial condition state of each member. {T}his variability appears to decrease during the 1850-2018 period in response to external forcings. {T}he analysis of the ocean heat content reveals furthermore an overestimation of the ocean stratification, which likely leads to an overestimation of the recent warming rate on average.}, keywords = {climate variability ; global climate models ; decadal ocean variability}, booktitle = {}, journal = {{J}ournal of {A}dvances in {M}odeling {E}arth {S}ystems}, volume = {13}, numero = {9}, pages = {e2021{MS}002565 [25 p.]}, year = {2021}, DOI = {10.1029/2021ms002565}, URL = {https://www.documentation.ird.fr/hor/fdi:010083170}, }