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dc.contributor.authorMedley, Brooke  Concept link
dc.contributor.authorJoughin, Ian  Concept link
dc.contributor.authorDas, Sarah B.  Concept link
dc.contributor.authorSteig, Eric J.  Concept link
dc.contributor.authorConway, Howard  Concept link
dc.contributor.authorGogineni, S.  Concept link
dc.contributor.authorCriscitiello, Alison S.  Concept link
dc.contributor.authorMcConnell, Joseph R.  Concept link
dc.contributor.authorSmith, B. E.  Concept link
dc.contributor.authorvan den Broeke, Michiel R.  Concept link
dc.contributor.authorLenaerts, Jan T. M.  Concept link
dc.contributor.authorBromwich, D. H.  Concept link
dc.contributor.authorNicolas, J. P.  Concept link
dc.date.accessioned2013-09-25T14:51:24Z
dc.date.available2014-10-22T08:57:21Z
dc.date.issued2013-07-26
dc.identifier.citationGeophysical Research Letters 40 (2013): 3649–3654en_US
dc.identifier.urihttps://hdl.handle.net/1912/6234
dc.descriptionAuthor Posting. © American Geophysical Union, 2013. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 40 (2013): 3649–3654, doi:10.1002/grl.50706.en_US
dc.description.abstractWe use an airborne-radar method, verified with ice-core accumulation records, to determine the spatiotemporal variations of snow accumulation over Thwaites Glacier, West Antarctica between 1980 and 2009. We also present a regional evaluation of modeled accumulation in Antarctica. Comparisons between radar-derived measurements and model outputs show that three global models capture the interannual variability well (r > 0.9), but a high-resolution regional model (RACMO2) has better absolute accuracy and captures the observed spatial variability (r = 0.86). Neither the measured nor modeled accumulation records over Thwaites Glacier show any trend since 1980. Although an increase in accumulation may potentially accompany the observed warming in the region, the projected trend is too small to detect over the 30 year record.en_US
dc.description.sponsorshipThis research was supported at UW by NSF OPP grants ANT-0631973 (B.M., I.J., E.J.S., and H.C.) and ANT-0424589 (B.M. and I.J.) and at WHOI by ANT-0632031 (S.B.D. and A.S.C.). D.H.B. and J.P.N. were supported by NASA grant NN12XAI29G. We acknowledge the work by the CReSIS team that went into developing the snow-radar system, which was partially supported with by NASA grant NNX10AT68G and by NSF OPP grant ANT-0424589 awarded to S.P.en_US
dc.format.mimetypetext/plain
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.publisherJohn Wiley & Sonsen_US
dc.relation.urihttps://doi.org/10.1002/grl.50706
dc.subjectWest Antarcticaen_US
dc.subjectSnow accumulationen_US
dc.subjectAirborne radaren_US
dc.subjectFirnen_US
dc.titleAirborne-radar and ice-core observations of annual snow accumulation over Thwaites Glacier, West Antarctica confirm the spatiotemporal variability of global and regional atmospheric modelsen_US
dc.typeArticleen_US
dc.description.embargo2014-01-26en_US
dc.identifier.doi10.1002/grl.50706


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