NSIDC-0218Greenland Ice Sheet Melt Characteristics Derived from Passive Microwave DataWaleed AbdalatiGreenland Ice Sheet Melt Characteristics Derived from Passive Microwave Data2008-02-25Boulder, Colorado USANASA NSIDC DAAC: NASA National Snow and Ice Data Center Distributed Active Archive Center1false10.5067/NON9395MQ9TKhttps://doi.org/10.5067/NON9395MQ9TKNSIDC-0218InvestigatorWaleedAbdalatiwaleed.abdalati@colorado.eduBoulderCO80309USATechnical ContactNSIDCUser Servicesnsidc@nsidc.org1-303-492-61991-303-492-2468CIRES, 449 UCBUniversity of ColoradoBoulderCO80309-0449USAEARTH SCIENCETERRESTRIAL HYDROSPHERESNOW/ICESNOW MELT EARTH SCIENCECRYOSPHERESNOW/ICESNOW MELT Geoscientific InformationImagery/Base Maps/Earth CoverGreenlandIce SheetPARCAPARCA-projectPassive MicrowavePassive Microwave DataPolar StereographicSMMRSnow MeltSSM/ISMMRScanning Multichannel Microwave RadiometerSSM/ISpecial Sensor Microwave/ImagerDMSP 5D-2/F11Defense Meteorological Satellite Program-F11DMSP 5D-2/F13Defense Meteorological Satellite Program-F13DMSP 5D-2/F8Defense Meteorological Satellite Program-F8Nimbus-7Nimbus-71979-04-022007-12-31in work6084-73-10ContinentNorth AmericaGreenland25 km25 km1 year25 km25 km29 yearPARCAProgram in Arctic Regional Climate AssessmentThese 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 ColoradoBoulderCO80309-0449USAFTP13 KBBinaryFTP2 - 4 KBGeoTIFFFTP0 - 16 KBASCIIAbdalati, Waleed and Konrad Steffen. 2001. Greenland Ice Sheet Melt Extent: 1979-1999. Journal of Geophysical Research (Atmospheres) 106(D24): 33983-8.
Abdalati, Waleed and Konrad Steffen. 1997. Snowmelt on the Greenland Ice Sheet as Derived from Passive Microwave Satellite Data. Journal of Climate 10: 165-75.
Abdalati, Waleed and Konrad Steffen. 1995. Passive Microwave-derived Snow Melt Regions on the Greenland Ice Sheet. Geophysical Research Letters 22: 787-790.
Abdalati, Waleed and J. Stroeve. 1993. Climate Sensitivity Studies of the Greenland Ice Sheet Using Satellite AVHRR, SMMR, SSM/I, and In Situ Data. Meteorology and Atmospheric Physics 51: 239-258.
Jezek, K. C., C. Merry, D. Cavalieri, S. Grace, J. Bedner, D. Wilson, and D. Lampkin. 1991. Comparison Between SMMR and SSM/I Passive Microwave Data Collected Over the Antarctic Ice Sheet. Byrd Polar Research Center Technical Report 91-03, Ohio State University, Columbus OH, 62 pp.
Mätzler, C. H. and R. Hüppi. 1989. Review of Signature Studies for Microwave Remote Sensing of Snowpacks. Advances in Space Research 9: 253-265.
Ulaby, F. T., R. K. Moore, and A. K. Fung. 1982. Radar Remote Sensing and Surface Scattering and Emission Theory. Microwave Remote Sensing. Vol. 2, Artech House.
Ulaby, F. T., R. K. Moore, and A. K. Fung. 1986. From Theory to Applications. Microwave Remote Sensing. Vol. 3, Artech House.The Greenland ice sheet melt extent data, acquired as part of the NASA Program for Arctic Regional Climate Assessment (PARCA), is a daily (or every other day, prior to August 1987) estimate of the spatial extent of wet snow on the Greenland ice sheet since 1979. It is derived from passive microwave satellite brightness temperature characteristics using the Cross-Polarized Gradient Ratio (XPGR) of Abdalati and Steffen (1997). It is physically based on the changes in microwave emission characteristics observable in data from the Scanning Multi-channel Microwave Radiometer (SMMR) and the Special Sensor Microwave/Imager (SSM/I) instruments when surface snow melts. It is not a direct measure of the snow wetness but rather is a binary indicator of the state of melt of each SMMR and SSM/I pixel on the ice sheet for each day of observation. It is, however, a useful proxy for the amount of melt that occurs on the Greenland ice sheet. The data are provided in a variety of formats including raw data in ASCII format, gridded daily data in binary format, and annual and complete time series climatologies in gridded binary and GeoTIFF format. All data are in a 60 x 109 pixel subset of the standard Northern Hemisphere polar stereographic grid with a 25 km resolution and are available via FTP.VIEW RELATED INFORMATIONhttps://doi.org/10.5067/NON9395MQ9TKDocumentationGET DATAhttps://daacdata.apps.nsidc.org/pub/DATASETS/parca/nsidc0218_melt/HTTPSPROJECT HOME PAGEhttp://nsidc.org/data/parca/index.htmlPARCA Program Web pagePROJECT HOME PAGEhttp://nsidc.org/data/virtual_globes/Virtual Globes: Google Earth CEOS IDN DIFVERSION 9.92008-02-252024-02-26NSIDCVersion SummaryInitial releaseNSIDCMinor VersionNSIDCCurrent Version1NSIDCLevel of ServiceStandardNSIDCFull Dataset Citation2008. <i>Greenland Ice Sheet Melt Characteristics Derived from Passive Microwave Data.</i> [indicate subset used]. Boulder, Colorado USA: NASA National Snow and Ice Data Center Distributed Active Archive Center. <a href="https://doi.org/10.5067/NON9395MQ9TK">https://doi.org/10.5067/NON9395MQ9TK</a>. [Date Accessed].NSIDCRetiredfalseNSIDCRelated Servicesapplication/vnd.nasa.cmr.umm+jsonfalseamy.steikermmt_service_12717S1977897447-NSIDCV0NSIDCV05service2022-06-14T16:33:23.589Zhttps://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/support/how/how-do-i-programmatically-request-data-servicesVIEW 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/parca/nsidc0218_melt/