Abdalati, W. 2007. Greenland ice sheet melt characteristics derived from passive microwave data. Boulder, Colorado USA: National Snow and Ice Data Center. Digital Media. Available at http://nsidc.org/data/nsidc-0218.html. 17 July 2007. Background: The ice sheet melt extent is a daily (or every-other-day, prior to August, 1987) estimate of the spatial extent of wet snow on the Greenland ice sheet derived from passive microwave satellite brightness temperature characteristics using the cross-polarized gradient ratio of Abdalati and Steffen (J. Climate, 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). 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 ablation that occurs on the Greenland ice sheet. Abdalati, W. 2007. Greenland ice sheet melt characteristics derived from passive microwave data. Boulder, Colorado USA: National Snow and Ice Data Center. Digital Media. Available at http://nsidc.org/data/nsidc-0218.html. 17 July 2007. Background: The ice sheet melt extent is a daily (or every-other-day, prior to August, 1987) estimate of the spatial extent of wet snow on the Greenland ice sheet derived from passive microwave satellite brightness temperature characteristics using the cross-polarized gradient ratio of Abdalati and Steffen (J. Climate, 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). 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 ablation that occurs on the Greenland ice sheet. greenland_surface_melt Cryosphere Earth Science Greenland Ice Sheets Polar Snow Melt 0 0 114 118 -837081.418 -1130786.327 2031324.049 1838687.117 -179.724371524912 65.0917471938267 179.267576918496 82.2840082267087 urn:ogc:def:crs:EPSG::32661 urn:ogc:def:method:WCS:1.1:2dSimpleGrid -824581.418 1826187.117 25000 -25000 urn:ogc:def:cs:OGC:0.0:Grid2dSquareCS surface melt (days per year) pixels nearest neighbor bilinear 1 urn:ogc:def:crs:EPSG::32661 urn:ogc:def:crs:EPSG::4326 urn:ogc:def:crs:EPSG::3408 urn:ogc:def:crs:EPSG::3410 urn:ogc:def:crs:EPSG::3411 urn:ogc:def:crs:EPSG::3413 urn:ogc:def:crs:EPSG::3571 urn:ogc:def:crs:EPSG::3572 urn:ogc:def:crs:EPSG::3573 urn:ogc:def:crs:EPSG::3574 urn:ogc:def:crs:EPSG::3575 urn:ogc:def:crs:EPSG::3576 urn:ogc:def:crs:EPSG::3973 urn:ogc:def:crs:EPSG::3975 urn:ogc:def:crs:EPSG::32624 image/tiff