Long melt seasons on ice shelves of the Antarctic Peninsula: an analysis using satellite-based microwave emission measurements

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dc.contributor.authorFahnestock, Mark A.
dc.contributor.authorAbdalati, Waleed
dc.contributor.authorShuman, Christopher
dc.date.accessioned2022-02-21T15:43:00Z
dc.date.available2022-02-21T15:43:00Z
dc.date.issued2017-09-14
dc.description.abstractWe have examined the record of melt-season duration on the Antarctic Peninsula using two techniques for detecting the presence of a melt signal in microwave-emission time series covering the period 1978–2000. We have obtained similar estimates of melt-season length using the cross-polarized gradient ratio (XPGR) technique and calibrations previously applied in Greenland and a technique which detects the jump in emission caused by melt without using a sensor- and frequency-dependent threshold value. The close correspondence between results from the two techniques on peninsula ice shelves suggests that the XPGR analysis can be used over the length of the time series. The results show that the long melt seasons of 1992/93 and several later years were exceptional occurrences on the northern parts of the Larsen Ice Shelf. These melt seasons were followed by disintegration events, supporting a possible cause-and-effect relationship.en_US
dc.description.sponsorshipThe authors were supported by NASA Headquarters Polar program. We wish to thank T. Scambos and C. Hulbe for useful discussions about ice-shelf processes, and J.-G. Winther andJ.O. Hagen for helpful reviews.en_US
dc.description.urihttps://www.cambridge.org/core/journals/annals-of-glaciology/article/long-melt-seasons-on-ice-shelves-of-the-antarctic-peninsula-an-analysis-using-satellitebased-microwave-emission-measurements/50A85CB3B011A3F803AD7943BADB5484en_US
dc.format.extent7 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m2rn4f-xsek
dc.identifier.citationFahnestock, Mark A., Waleed Abdalati, and Christopher A. Shuman. 2002. “Long Melt Seasons on Ice Shelves of the Antarctic Peninsula: an Analysis Using Satellite-Based Microwave Emission Measurements.” Annals of Glaciology 34. Cambridge University Press: 127–33. doi:10.3189/172756402781817798.en_US
dc.identifier.urihttps://doi.org/10.3189/172756402781817798
dc.identifier.urihttp://hdl.handle.net/11603/24299
dc.language.isoen_USen_US
dc.publisherCambridge University Pressen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Joint Center for Earth Systems Technology
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.titleLong melt seasons on ice shelves of the Antarctic Peninsula: an analysis using satellite-based microwave emission measurementsen_US
dc.typeTexten_US
dcterms.creatorhttps://orcid.org/0000-0001-9606-767Xen_US

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