NSIDC-0218
Greenland Ice Sheet Melt Characteristics Derived from Passive Microwave Data
Waleed Abdalati
Greenland Ice Sheet Melt Characteristics Derived from Passive Microwave Data
2008-02-25
Boulder, Colorado USA
NSIDC: National Snow and Ice Data Center
http://nsidc.org/data/nsidc-0218.html
Investigator
Waleed
Abdalati
waleed.abdalati@colorado.edu
University of Colorado-Boulder/ CIRES
Director of ESOC/Associate Professor of Geography
Boulder
CO
80309
USA
Technical Contact
NSIDC
User Services
nsidc@nsidc.org
1 303 492-6199 x
1 303 492-2468 x
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
Boulder
CO
80309-0449
USA
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
Geoscientific Information
Imagery/Base Maps/Earth Cover
Greenland
Ice Sheet
PARCA
Passive Microwave
Passive Microwave Data
Polar Stereographic
SMMR
Snow Melt
SSM/I
SMMR
Scanning Multichannel Microwave Radiometer
SSM/I
Special Sensor Microwave/Imager
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
1979-04-02
2007-12-31
in work
60
84
-73
-10
CONTINENT
NORTH AMERICA
GREENLAND
25 km
25 km
29 years
25 km
25 km
25 km
25 km
1 year
PARCA
Program in Arctic Regional Climate Assessment
English
NSIDC_DAAC
NASA DAAC at the National Snow and Ice Data Center
http://nsidc.org/daac/index.html
Data Center Contact
NSIDC
User Services
nsidc@nsidc.org
1 303 492-6199
1 303 492-2468
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
Boulder
CO
80309-0449
USA
NSIDC
National Snow and Ice Data Center
http://nsidc.org
Data Center Contact
NSIDC
User Services
nsidc@nsidc.org
1 303 492-6199
1 303 492-2468
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
Boulder
CO
80309-0449
USA
FTP
0 - 16 KB
ASCII Text
FTP
13 KB
Binary
FTP
2 - 4 KB
GeoTIFF
Abdalati, 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.
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CEOS IDN DIF
9.7
2008-02-25
2013-01-10
Fixed the See Also section. It was listing the PARCA Web site twice.