NSIDC-0218
Waleed Abdalati
20080225
Greenland Ice Sheet Melt Characteristics Derived from Passive Microwave Data
Boulder, Colorado USA
NSIDC: National Snow and Ice Data Center
http://nsidc.org/data/nsidc-0218.html
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.
scientific research
Waleed Abdalati
20080225
Greenland Ice Sheet Melt Characteristics Derived from Passive Microwave Data
Boulder, Colorado USA
NSIDC: National Snow and Ice Data Center
http://nsidc.org/data/docs/daac/parca/nsidc0218_greenland_melt_pm/
19790402
20071231
publication date
Unknown
-73
-10
84
60
NASA Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > Cryosphere > Snow/Ice > Snow Melt
EARTH SCIENCE > Cryosphere > Snow/Ice > Snow Melt
EARTH SCIENCE > Terrestrial Hydrosphere > Snow/Ice > Snow Melt
EARTH SCIENCE > Terrestrial Hydrosphere > Snow/Ice > Snow Melt
NASA Global Change Master Directory (GCMD) Project Keywords
PARCA > Program in Arctic Regional Climate Assessment
NASA Global Change Master Directory (GCMD) Instrument Keywords
SMMR > Scanning Multichannel Microwave Radiometer
SSM/I > Special Sensor Microwave/Imager
NASA Global Change Master Directory (GCMD) Platform Keywords
DMSP 5D-2/F11 > Defense Meteorological Satellite Program-F11
DMSP 5D-2/F13 > Defense Meteorological Satellite Program-F13
DMSP 5D-2/F8 > Defense Meteorological Satellite Program-F8
NIMBUS-7
SATELLITES
ISO 19115 Topic Categories
geoscientificinformation
imageryBaseMapsEarthCover
None
Greenland
Ice Sheet
PARCA
Passive Microwave
Passive Microwave Data
Polar Stereographic
SMMR
Snow Melt
SSM/I
NASA Global Change Master Directory (GCMD) Location Keywords
Continent > North America > Greenland
4
NASA Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > Cryosphere > Snow/Ice > Snow Melt
NASA Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > Cryosphere > Snow/Ice > Snow Melt
NASA Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > Terrestrial Hydrosphere > Snow/Ice > Snow Melt
NASA Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > Terrestrial Hydrosphere > Snow/Ice > Snow Melt
None
None
NSIDC User Services
National Snow and Ice Data Center
mailing
CIRES, 449 UCB
University of Colorado
Boulder
CO
80309-0449
USA
1 303 492-6199 x
1 303 492-2468 x
nsidc@nsidc.org
National Snow and Ice Data Center
NSIDC User Services
mailing
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
Boulder
CO
80309-0449
USA
1 303 492-6199
1 303 492-2468
nsidc@nsidc.org
NSIDC-0218
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.
ASCII Text
ftp://sidads.colorado.edu/pub/DATASETS/parca/nsidc0218_melt/
None
Binary
ftp://sidads.colorado.edu/pub/DATASETS/parca/nsidc0218_melt/
None
GeoTIFF
ftp://sidads.colorado.edu/pub/DATASETS/parca/nsidc0218_melt/
None
20130110
20130110
NSIDC User Services
National Snow and Ice Data Center
mailing
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
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