Multiyear accumulation and temperature history near the North Greenland Ice Core Project site, north central Greenland

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dc.contributor.authorShuman, Christopher
dc.contributor.authorBromwich, D.H.
dc.contributor.authorKipfstuhl, J.
dc.contributor.authorSchwager, M.
dc.date.accessioned2022-02-21T16:10:24Z
dc.date.available2022-02-21T16:10:24Z
dc.date.issued2001-12-27
dc.description.abstractThis paper presents a comparison of two independent methods of estimating subseasonal accumulation across the interior of Greenland. These methods, high-resolution snow pit studies and atmospheric modeling, have differing spatial and temporal resolution, but both can estimate net accumulation for subseasonal and shorter periods. The snow pit approach is based on a documented relationship between high-resolution snow pit profiles of oxygen stable isotope ratio (𝛿¹⁸O) and multiyear Special Sensor Microwave/Imager (SSM/I) 37-GHz brightness temperature records. Comparison of SSM/I data to profiles obtained during the 1995 Alfred Wegener Institut North Greenland Traverse field season shows that 𝛿¹⁸O data from snow in north central Greenland are a reliable, high-resolution temperature proxy. This enables determination of accumulation amount, rate, and timing from approximately July 1991 through June 1995 across this 220- km-long transect of the ice sheet. Precipitation estimates derived from early modeling based on European Centre for Medium-Range Weather Forecasts data show a similar average seasonal pattern but a diminished magnitude of accumulation (~56%) for these sites. The slope of the multiyear T versus 𝛿 correlation was evaluated for each site on the basis of the observed and calculated temperature history from the nearby North Greenland Ice core Project (NGRIP) site automatic weather station. These data should assist interpretation of the paleoclimatic record in the NGRIP deep core.en_US
dc.description.sponsorshipWe thank the Alfred Wegener Institut North Greenland Traverse team for their collaboration. We also thank Koni Steffen and Jason Box of the Greenland Climate Network for the NGRIP AWS temperature record. This research was supported by the NASA Program for Arctic Regional Climate Assessment, NASA code YS, and the Earth Observing System Interdisciplinary Science grant 622-1418 to C. A. S. and NASA grant NAG5-6001 to D. H. B. This project was begun while the first author was with NASA Goddard Space Flight Center's Ocean and Ice Branch as a National Research Universities Space Research Association Visiting Research Fellow.en_US
dc.description.urihttps://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2001JD900197en_US
dc.format.extent14 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m21c1q-p8af
dc.identifier.citationShuman, C. A. et al. Multiyear accumulation and temperature history near the North Greenland Ice Core Project site, north central Greenland. JOURNAL OF GEOPHYSICAL RESEARCH 106 (Dec. 27, 2001) D24, p.33,853-33,866.en_US
dc.identifier.urihttp://hdl.handle.net/11603/24301
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.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.titleMultiyear accumulation and temperature history near the North Greenland Ice Core Project site, north central Greenlanden_US
dc.typeTexten_US
dcterms.creatorhttps://orcid.org/0000-0001-9606-767Xen_US

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