Variability in the surface temperature and melt extent of the Greenland ice sheet from MODIS

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dc.contributor.authorHall, Dorothy K
dc.contributor.authorComiso, Josefino C.
dc.contributor.authorDiGirolamo, Nicolo E.
dc.contributor.authorShuman, Christopher
dc.contributor.authorBox, Jason E.
dc.contributor.authorKoenig, Lora S.
dc.date.accessioned2022-02-16T14:36:30Z
dc.date.available2022-02-16T14:36:30Z
dc.date.issued2013-02-12
dc.description.abstractSatellite-derived moderate-resolution imaging spectro-radiometer (MODIS) ice-surface temperature (IST) of the Greenland ice sheet shows a positive trend and two major melt events from 2000 to present. IST increased by ~0.55 ± 0.44°C/decade, with the greatest increase (~0.95 ± 0.44°C/decade) found in northwestern Greenland where coastal temperatures and mass loss are also increasing and outlet glaciers are accelerating. IST shows the highest rates of increase during summer (~1.35 ± 0.47°C/decade) and winter (~1.30 ± 1.53°C/decade), followed by spring (~0.60 ± 0.98°C/decade). In contrast, a decrease in IST was found in the autumn (~-1.49 ± 1.20°C/decade). The IST trends in this work are not statistically significant with the exception of the trend in northwestern Greenland. Major surface melt (covering 80% or more of the ice sheet) occurred during the 2002 and 2012 melt seasons where clear-sky measurements show a maximum melt of ~87% and ~95% of the ice sheet surface, respectively. In 2002, most of the extraordinary melt was ephemeral, whereas in 2012 the ice sheet not only experienced more total melt, but melt was more persistent, and the 2012 summer was the warmest in the MODIS record (-6.38 ± 3.98°C). Our data show that major melt events may not be particularly rare during the present period of ice sheet warming. Citation: Hall, D. K., J. C. Comiso, N. E. DiGirolamo, C. A. Shuman, J. E. Box, and L. S. Koenig (2013), Variability in the surface temperature and melt extent of the Greenland ice sheet from MODIS, Geophys. Res. Lett., 40, 2114–2120, doi:10.1002/grl.50240.en_US
dc.description.sponsorshipAir temperature data are courtesy of Thomas Mefford (NOAA Earth System Research Laboratory Boulder, CO, and University of Colorado at Boulder), with additional processing by Michael J. Schnaubelt (University of Maryland, Baltimore County).en_US
dc.description.urihttps://agupubs.onlinelibrary.wiley.com/doi/10.1002/grl.50240en_US
dc.format.extent7 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m223ju-ztrr
dc.identifier.citationHall, D. K., Comiso, J. C., DiGirolamo, N. E., Shuman, C. A., Box, J. E., and Koenig, L. S. (2013), Variability in the surface temperature and melt extent of the Greenland ice sheet from MODIS, Geophys. Res. Lett., 40, 2114– 2120, doi:10.1002/grl.50240.en_US
dc.identifier.urihttps://doi.org/10.1002/grl.50240
dc.identifier.urihttp://hdl.handle.net/11603/24276
dc.language.isoen_USen_US
dc.publisherAGUen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Joint Center for Earth Systems Technology
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.en_US
dc.rightsPublic Domain Mark 1.0*
dc.rights.urihttp://creativecommons.org/publicdomain/mark/1.0/*
dc.titleVariability in the surface temperature and melt extent of the Greenland ice sheet from MODISen_US
dc.typeTexten_US
dcterms.creatorhttps://orcid.org/0000-0001-9606-767Xen_US

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