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dc.contributor.authorStewart, CLen
dc.contributor.authorChristoffersen, Poulen
dc.contributor.authorNicholls, KWen
dc.contributor.authorWilliams, MJMen
dc.contributor.authorDowdeswell, Julianen
dc.date.accessioned2019-04-05T23:31:16Z
dc.date.available2019-04-05T23:31:16Z
dc.date.issued2019-06-01en
dc.identifier.issn1752-0894
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/291221
dc.description.abstractIce-ocean interactions at the base of Antarctic ice shelves are rarely observed, yet have a profound influence on ice sheet evolution and stability. Ice sheet models are highly sensitive to assumed ice shelf basal melt rates; however, there are few direct observations of basal melting or the oceanographic processes that drive this, and consequently our understanding of these interactions remains limited. Here we use new in-situ observations from the Ross Ice Shelf to examine the oceanographic processes that drive basal ablation of the world’s largest ice shelf. We show that basal melt rates beneath a thin and structurally important part of the shelf are an order of magnitude higher than the shelf-wide average. This melting is strongly influenced by a seasonal inflow of solar-heated surface water from the adjacent Ross Sea Polynya that downwells into the ice shelf cavity, nearly tripling basal melt rates during summer. Melting driven by this frequently overlooked process is expected to increase with predicted surface warming. We infer that solar heat absorbed in ice front polynyas can make an important contribution to the present-day mass balance of ice shelves, and potentially impact their future stability.
dc.description.sponsorshipRutherford Foundation and Antarctica New Zealand
dc.rightsAll rights reserved
dc.rights.uri
dc.titleBasal melting of Ross Ice Shelf from solar heat absorption in an ice-front polynyaen
dc.typeArticle
prism.endingPage440
prism.issueIdentifier6en
prism.publicationDate2019en
prism.publicationNameNature Geoscienceen
prism.startingPage435
prism.volume12en
dc.identifier.doi10.17863/CAM.38400
dcterms.dateAccepted2019-03-27en
rioxxterms.versionofrecord10.1038/s41561-019-0356-0en
rioxxterms.versionAM
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2019-06-01en
dc.contributor.orcidStewart, CL [0000-0002-3906-1594]
dc.contributor.orcidChristoffersen, Poul [0000-0003-2643-8724]
dc.contributor.orcidNicholls, KW [0000-0002-2188-4509]
dc.contributor.orcidDowdeswell, Julian [0000-0003-1369-9482]
dc.identifier.eissn1752-0908
rioxxterms.typeJournal Article/Reviewen
cam.orpheus.successThu Jan 30 10:47:39 GMT 2020 - Embargo updated*
rioxxterms.freetoread.startdate2019-12-01


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