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dc.rights.licenseopenen_US
dc.contributor.authorALKAMA, Ramdane
dc.contributor.authorTAYLOR, Patrick C.
dc.contributor.authorGARCIA-SAN MARTIN, Lorea
dc.contributor.authorDOUVILLE, Herve
dc.contributor.authorDUVEILLER, Gregory
dc.contributor.authorFORZIERI, Giovanni
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorSWINGEDOUW, Didier
dc.contributor.authorCESCATTI, Alessandro
dc.date.accessioned2024-04-16T12:53:30Z
dc.date.available2024-04-16T12:53:30Z
dc.date.issued2020-08-21
dc.identifier.urioai:crossref.org:10.5194/tc-14-2673-2020
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/199104
dc.description.abstractEnAbstract. Clouds play an important role in the climate system: (1) cooling Earth by reflecting incoming sunlight to space and (2) warming Earth by reducing thermal energy loss to space. Cloud radiative effects are especially important in polar regions and have the potential to significantly alter the impact of sea ice decline on the surface radiation budget. Using CERES (Clouds and the Earth's Radiant Energy System) data and 32 CMIP5 (Coupled Model Intercomparison Project) climate models, we quantify the influence of polar clouds on the radiative impact of polar sea ice variability. Our results show that the cloud short-wave cooling effect strongly influences the impact of sea ice variability on the surface radiation budget and does so in a counter-intuitive manner over the polar seas: years with less sea ice and a larger net surface radiative flux show a more negative cloud radiative effect. Our results indicate that 66±2% of this change in the net cloud radiative effect is due to the reduction in surface albedo and that the remaining 34±1 % is due to an increase in cloud cover and optical thickness. The overall cloud radiative damping effect is 56±2 % over the Antarctic and 47±3 % over the Arctic. Thus, present-day cloud properties significantly reduce the net radiative impact of sea ice loss on the Arctic and Antarctic surface radiation budgets. As a result, climate models must accurately represent present-day polar cloud properties in order to capture the surface radiation budget impact of polar sea ice loss and thus the surface albedo feedback.
dc.language.isoENen_US
dc.sourcecrossref
dc.title.enClouds damp the radiative impacts of polar sea ice loss
dc.typeArticle de revueen_US
dc.identifier.doi10.5194/tc-14-2673-2020en_US
dc.subject.halSciences de l'environnementen_US
bordeaux.journalThe Cryosphereen_US
bordeaux.page2673-2686en_US
bordeaux.volume14en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.issue8en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.teamPALEOen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcedissemin
hal.identifierhal-04548487
hal.version1
hal.date.transferred2024-04-16T12:53:33Z
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exporttrue
workflow.import.sourcedissemin
dc.rights.ccCC BYen_US
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=The%20Cryosphere&rft.date=2020-08-21&rft.volume=14&rft.issue=8&rft.spage=2673-2686&rft.epage=2673-2686&rft.au=ALKAMA,%20Ramdane&TAYLOR,%20Patrick%20C.&GARCIA-SAN%20MARTIN,%20Lorea&DOUVILLE,%20Herve&DUVEILLER,%20Gregory&rft.genre=article


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