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dc.contributor.authorRen, D
dc.contributor.authorFu, R
dc.contributor.authorLeslie, LM
dc.contributor.authorChen, J
dc.contributor.authorWilson, CR
dc.contributor.authorKaroly, DJ
dc.date.available2014-05-22T07:03:23Z
dc.date.issued2011-07-01
dc.identifierhttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000292590500021&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=d4d813f4571fa7d6246bdc0dfeca3a1c
dc.identifier.citationRen, D., Fu, R., Leslie, L. M., Chen, J., Wilson, C. R. & Karoly, D. J. (2011). The Greenland Ice Sheet Response to Transient Climate Change. JOURNAL OF CLIMATE, 24 (13), pp.3469-3483. https://doi.org/10.1175/2011JCLI3708.1.
dc.identifier.issn0894-8755
dc.identifier.urihttp://hdl.handle.net/11343/32783
dc.description© Copyright 2011 American Meteorological Society (AMS). Permission to use figures, tables, and brief excerpts from this work in scientific and educational works is hereby granted provided that the source is acknowledged. Any use of material in this work that is determined to be “fair use” under Section 107 of the U.S. Copyright Act or that satisfies the conditions specified in Section 108 of the U.S. Copyright Act (17 USC §108, as revised by P.L. 94-553) does not require the AMS’s permission. Republication, systematic reproduction, posting in electronic form, such as on a web site or in a searchable database, or other uses of this material, except as exempted by the above statement, requires written permission or a license from the AMS. Additional details are provided in the AMS Copyright Policy, available on the AMS Web site located at (http://www.ametsoc.org/) or from the AMS at 617-227-2425 or copyrights@ametsoc.org.
dc.description.abstractAbstract This study applies a multiphase, multiple-rheology, scalable, and extensible geofluid model to the Greenland Ice Sheet (GrIS). The model is driven by monthly atmospheric forcing from global climate model simulations. Novel features of the model, referred to as the scalable and extensible geofluid modeling system (SEGMENT-Ice), include using the full Navier–Stokes equations to account for nonlocal dynamic balance and its influence on ice flow, and a granular sliding layer between the bottom ice layer and the lithosphere layer to provide a mechanism for possible large-scale surges in a warmer future climate (granular basal layer is for certain specific regions, though). Monthly climate of SEGMENT-Ice allows an investigation of detailed features such as seasonal melt area extent (SME) over Greenland. The model reproduced reasonably well the annual maximum SME and total ice mass lost rate when compared observations from the Special Sensing Microwave Imager (SSM/I) and Gravity Recovery and Climate Experiment (GRACE) over the past few decades. The SEGMENT-Ice simulations are driven by projections from two relatively high-resolution climate models, the NCAR Community Climate System Model, version 3 (CCSM3) and the Model for Interdisciplinary Research on Climate 3.2, high-resolution version [MIROC3.2(hires)], under a realistic twenty-first-century greenhouse gas emission scenario. They suggest that the surface flow would be enhanced over the entire GrIS owing to a reduction of ice viscosity as the temperature increases, despite the small change in the ice surface topography over the interior of Greenland. With increased surface flow speed, strain heating induces more rapid heating in the ice at levels deeper than due to diffusion alone. Basal sliding, especially for granular sediments, provides an efficient mechanism for fast-glacier acceleration and enhanced mass loss. This mechanism, absent from other models, provides a rapid dynamic response to climate change. Net mass loss estimates from the new model should reach ~220 km3 yr−1 by 2100, significantly higher than estimates by the Intergovernmental Panel on Climate Change (IPCC) Assessment Report 4 (AR4) of ~50–100 km3 yr−1. By 2100, the perennial frozen surface area decreases up to ~60%, to ~7 × 105 km2, indicating a massive expansion of the ablation zone. Ice mass change patterns, particularly along the periphery, are very similar between the two climate models.
dc.languageEnglish
dc.publisherAMER METEOROLOGICAL SOC
dc.subjectclimate change
dc.subjectGreenland Ice Sheet
dc.subjectglobal climate model simulations
dc.titleThe Greenland Ice Sheet Response to Transient Climate Change
dc.typeJournal Article
dc.identifier.doi10.1175/2011JCLI3708.1
melbourne.peerreviewPeer Reviewed
melbourne.affiliationThe University of Melbourne
melbourne.affiliation.departmentScience - Earth Sciences
melbourne.publication.statusPublished
melbourne.source.titleJournal of Climate
melbourne.source.volume24
melbourne.source.issue13
melbourne.source.pages3469-3483
melbourne.publicationid168424
melbourne.elementsid337972
melbourne.contributor.authorKaroly, David
melbourne.internal.ingestnoteAbstract bulk upload (2017-07-24)
dc.identifier.eissn1520-0442
melbourne.accessrightsOpen Access


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