2026-06-06T05:49:16Zhttp://nsidc.org/api/dataset/metadata/oaioai:nsidc.org/NSIDC-0644.0012025-12-22T21:19:05Zv0_daacv0_allnasa_nsidc_daac
NSIDC-0644.001Greenland Annual Accumulation along the EGIG Line, 1959–2004, from Airborne Radar and Neutron Probe DensitiesOverly, T. B., Hawley, R. L., Helm, V., Morris, E. M. & Chaudhary, R. N.Greenland Annual Accumulation along the EGIG Line, 1959–2004, from Airborne Radar and Neutron Probe Densities2017-11-01Boulder, Colorado USANASA NSIDC DAAC: NASA National Snow and Ice Data Center Distributed Active Archive Center1false10.5067/6MLZSLRBL67Uhttps://nsidc.org/sites/default/files/nsidc-0644_2.pdfNSIDC-0644Technical ContactNSIDCUser Servicesnsidc@nsidc.org1-303-492-61991-303-492-2468CIRES, 449 UCBUniversity of ColoradoBoulderCO80309-0449USAInvestigatorThomasB.OverlyInvestigatorRobertLHawleyDartmouth CollegeEarth Sciences, HB 6105HanoverNH13755USAInvestigatorVeitHelmInvestigatorElizabethM.MorrisInvestigatorRohanN.ChaudharyEARTH SCIENCECRYOSPHERESNOW/ICESNOW DEPTH Climatology/Meteorology/AtmosphereGeoscientific InformationImagery/Base Maps/Earth CoverASIRASAirborne SAR/Interferometric Radar SystemAIRCRAFT1959-10-012004-09-30complete70.5856171.20772-42.8383-36.23243ContinentNorth AmericaGreenland3 m1 yearThese data are freely, openly, and fully accessible, provided that you are logged into your NASA Earthdata profile (https://urs.earthdata.nasa.gov/).These data are freely, openly, and fully available to use without restrictions, provided that you cite the data according to the recommended citation at https://nsidc.org/about/use_copyright.html. For more information on the NASA EOSDIS Data Use Policy, see https://earthdata.nasa.gov/earth-observation-data/data-use-policy.EnglishNASA NSIDC DAACNASA National Snow and Ice Data Center Distributed Active Archive Centerhttps://nsidc.org/daacData Center ContactNSIDCUser Servicesnsidc@nsidc.org1-303-492-6199National Snow and Ice Data CenterCIRES, 449 UCBUniversity of ColoradoBoulderCO80309-0449USAFTP75 MBASCIIFTP35 MBMATAnklin, Martin, Bernhard Stauffer, Klaus Geis, and Dietmar Wagenbach. 1994. “Pattern of Annual Snow Accumulation along a West Greenland Flow Line: No Significant Change Observed during Recent Decades.” Tellus B: Chemical and Physical Meteorology 46 (4). Taylor & Francis:294–303. https://doi.org/10.3402/tellusb.v46i4.15804.
Burgess, Evan W, Richard R Forster, Jason E Box, Ellen Mosley-Thompson, David H Bromwich, Roger C Bales, and Laurence C Smith. 2010. “A Spatially Calibrated Model of Annual Accumulation Rate on the Greenland Ice Sheet (1958–2007).” Journal of Geophysical Research: Earth Surface 115 (F2):F02004. https://doi.org/10.1029/2009JF001293.
Helm, V, W Rack, R Cullen, P Nienow, D Mair, V Parry, and D J Wingham. 2007. “Winter Accumulation in the Percolation Zone of Greenland Measured by Airborne Radar Altimeter.” Geophysical Research Letters 34 (6). https://doi.org/10.1029/2006GL029185.
Herron, Michael M, and Chester C Langway. 1980. “Firn Densification: An Empirical Model.” Journal of Glaciology 25 (93):373–85. https://doi.org/10.3189/S0022143000015239.
la Peña, S de, P Nienow, A Shepherd, V Helm, D Mair, E Hanna, P Huybrechts, Q Guo, R Cullen, and D Wingham. 2010. “Spatially Extensive Estimates of Annual Accumulation in the Dry Snow Zone of the Greenland Ice Sheet Determined from Radar Altimetry.” The Cryosphere 4 (4):467–74. https://doi.org/10.5194/tc-4-467-2010.
Morris, Elizabeth M, and Duncan J Wingham. 2011. “The Effect of Fluctuations in Surface Density, Accumulation and Compaction on Elevation Change Rates along the EGIG Line, Central Greenland.” Journal of Glaciology 57 (203):416–30. https://doi.org/10.3189/002214311796905613.
Morris, Elizabeth M., and Duncan J. Wingham. 2014. “Densification of Polar Snow: Measurements, Modeling, and Implications for Altimetry.” Journal of Geophysical Research: Earth Surface 119 (2):349–65. https://doi.org/10.1002/2013JF002898.
Overly, T B, R L Hawley, V Helm, E M Morris, and R N Chaudhary. 2016. “Greenland Annual Accumulation along the EGIG Line, 1959–2004, from ASIRAS Airborne Radar and Neutron-Probe Density Measurements.” The Cryosphere 10 (4):1679–94. https://doi.org/10.5194/tc-10-1679-2016.
Simonsen, Sebastian B, Lars Stenseng, Guðfinna Ađalgeirsdóttir, Robert S Fausto, Christine S Hvidberg, and Philippe Lucas-Picher. 2013. “Assessing a Multilayered Dynamic Firn-Compaction Model for Greenland with ASIRAS Radar Measurements.” Journal of Glaciology 59 (215):545–58. https://doi.org/10.3189/2013JoG12J158.
Steffen, Konrad, and Jason Box. 2001. “Surface Climatology of the Greenland Ice Sheet: Greenland Climate Network 1995–1999.” Journal of Geophysical Research: Atmospheres 106 (D24):33951–64. https://doi.org/10.1029/2001JD900161.This data set reports mean annual snow accumulation rates in meters water equivalent (m·w.e.) from 1959 to 2004 along a 250 km segment of the Expéditions Glaciologiques Internationales au Groenland (EGIG) line. Accumulation rates are derived from Airborne SAR/Interferometric Radar Altimeter System (ASIRAS) data and high resolution neutron-probe (NP) density profiles.VIEW RELATED INFORMATIONhttps://nsidc.org/sites/default/files/nsidc-0644_2.pdfGreenland Annual Accumulation along the EGIG Line, 1959–2004, from Airborne Radar and Neutron Probe Densities, Version 1 User GuideGET DATAhttps://daacdata.apps.nsidc.org/pub/DATASETS/nsidc0644_EGIG_line_v01HTTPSCEOS IDN DIFVERSION 9.92017-11-012025-12-22NSIDCVersion Summaryinitial releaseNSIDCMinor VersionNSIDCCurrent Version1NSIDCLevel of ServiceStandardNSIDCFull Dataset CitationOverly, T. B., Hawley, R. L., Helm, V., Morris, E. M. & Chaudhary, R. N. (2017). <i>Greenland Annual Accumulation along the EGIG Line, 1959–2004, from Airborne Radar and Neutron Probe Densities</i>. (NSIDC-0644, Version 1). [Data Set]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. <a href="https://doi.org/10.5067/6MLZSLRBL67U">https://doi.org/10.5067/6MLZSLRBL67U</a>. [<i><describe subset used if applicable></i>].NSIDCRetiredfalseNSIDCRelated Servicesapplication/vnd.nasa.cmr.umm+jsonfalseamyygillilandmmt_service_12717S1977897447-NSIDCV0NSIDCV06service2025-04-01T22:12:52.112Zhttps://daacdata.apps.nsidc.org/NSIDCV0_DAAC_Data_HTTPS_File_SystemNOT PROVIDED1HTTPS File SystemQuickly download a few files using a web browser, or access the data through a command-line utility such as WGET.https://nsidc.org/data/user-resources/help-center/programmatic-access-guide-data-daacdataappsVIEW RELATED INFORMATIONProgrammatic Data Access GuidePublicationURLUSER SERVICESNSIDC DAAC User ServicesEmailnsidc@nsidc.orgDATA ACCESS/RETRIEVALDATA MANAGEMENT/DATA HANDLINGEARTH SCIENCE SERVICESThis is the most current release of this service.DEVELOPERORIGINATORPUBLISHERSERVICE PROVIDERNASA National Snow and Ice Data Center Distributed Active Archive CenterNASA NSIDC DAACNASA Distributed Active Archive Center (DAAC) at NSIDChttps://nsidc.org/daacNSIDC DAAC Home Pagehttps://cdn.earthdata.nasa.gov/umm/service/v1.4UMM-S1.4https://daacdata.apps.nsidc.org/pub/DATASETS/nsidc0644_EGIG_line_v01