NSIDC-0280 Haran, T., J. Bohlander, T. Scambos, T. Painter, and M. Fahnestock 20051102 Boulder, Colorado USA NSIDC: National Snow and Ice Data Center http://nsidc.org/data/nsidc-0280.html http://dx.doi.org/10.7265/N5ZK5DM5 Staff from the National Snow and Ice Data Center (NSIDC) and the University of New Hampshire have assembled two digital image maps of surface morphology and optical snow grain size that cover the Antarctic continent and its surrounding islands. The MODIS Mosaic of Antarctica (MOA) image maps are derived from composites of 260 MODIS (Moderate-resolution Imaging Spectroradiometer) orbit swaths acquired between 20 November 2003 and 29 February 2004. The MOA provides a cloud-free view of the ice sheet, ice shelves, and land surfaces, and a quantitative measure of optical snow grain size for snow- or ice-covered areas. All land areas larger than a few hundred meters that are south of 60° S are included in the mosaic, as well as persistent fast ice regions and some grounded icebergs present near the coast in the 2003-2004 austral summer. The MOA surface morphology image map is derived from digitally processed MODIS Band 1 data. The optical snow grain size image is compiled using a normalized ratio of atmospherically corrected, calibrated band radiance data from Bands 1 and 2. The data are available via FTP at two spatial grid scales: 750 m (112 MB) and 125 m (4 GB), and via a Web-based map server that can create manually-selected Joint Photographic Experts Group (JPEG) images (as of this writing, the Web-based map server has only a qualitative grain size image and not the final grain size data product). Image data on the FTP site include binary 16-bit images that preserve the full radiometric content of the scenes. A complete discussion of data selection, processing, and validation along with examples of data applications are discussed in Scambos et al., 2007. scientific research Haran, T., J. Bohlander, T. Scambos, T. Painter, and M. Fahnestock 20051102 Boulder, Colorado USA NSIDC: National Snow and Ice Data Center http://nsidc.org/data/docs/agdc/nsidc0280_scambos/ 20031120 20040229 publication date Complete Unknown -180 180 -60 -90 NASA Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Firn > Snow Grain Size EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Ice Sheets > Surface Morphology None NASA Global Change Master Directory (GCMD) Instrument Keywords MODIS > Moderate-Resolution Imaging Spectroradiometer NASA Global Change Master Directory (GCMD) Platform Keywords AQUA > Earth Observing System, AQUA SATELLITES TERRA > Earth Observing System, TERRA (AM-1) ISO 19115 Topic Categories climatologyMeteorologyAtmosphere imageryBaseMapsEarthCover None AGDC Antarctica Aqua MODIS Satellite Imagery Satellites snow grain size Surface Morphology Terra NASA Global Change Master Directory (GCMD) Location Keywords Continent > Antarctica Geographic Region > Polar 2 NASA Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Firn > Snow Grain Size NASA Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Ice Sheets > Surface Morphology None None NSIDC User Services National Snow and Ice Data Center mailing

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Boulder CO 80309-0449 USA 1 303 492-6199 1 303 492-2468 nsidc@nsidc.org NSIDC-0280 NSIDC cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NSIDC makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. GeoTIFF ftp://sidads.colorado.edu/pub/DATASETS/MOA/ None Binary ftp://sidads.colorado.edu/pub/DATASETS/MOA/ None JPEG ftp://sidads.colorado.edu/pub/DATASETS/MOA/ None 20130318 20130318 NSIDC User Services National Snow and Ice Data Center mailing

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Boulder CO 80309-0449 USA 1 303 492-6199 1 303 492-2468 nsidc@nsidc.org FGDC Content Standard for Digital Geospatial Metadata: Extensions for Remote Sensing Metadata FGDC-STD-012-2002