ConflictingresultshavebeenpresentedregardingthelinkbetweenArcticsea-icelossandmidlatitudecooling,partic-ularlyoverEurasia.Thisstudyanalyzesuncoupled（atmosphere-only）andcoupled（ocean-atmosphere）simulationsbytheClimateForecastSystem,version2（CFSv2）,toexaminethislinkageduringtheNorthernHemispherewinter,focusingonthesimulationoftheobservedsurfacecoolingtrendoverEurasiaduringthelastthreedecades.TheuncoupledsimulationsareAtmosphericModelIntercomparisonProject（AMIP）runsforcedwithmeanseasonalcyclesofseasurfacetemperature（SST）andseaice,usingcombinationsofSSTandseaicefromdifferenttimeperiodstoassesstherolethateachplaysinpidually,andtoassesstheroleofatmosphericinternalvariability.Coupledrunsareusedtofurtherinvestigatetheroleofinternalvariabilitvviatheanalysisofinitializednredictionsandtheevolutionoftheforecastwithleadtime.
