Greenland Ice Sheet Melt Characteristics Derived from Passive Microwave Data, Version 1
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...
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dataone:sha256:99973941e6ad6db99511a840819f0b8f39ffe8630ae5750cae715bb0f7555777 2024-06-03T18:46:41+00:00 Greenland Ice Sheet Melt Characteristics Derived from Passive Microwave Data, Version 1 NASA National Snow and Ice Data Center Distributed Active Archive Center National Snow and Ice Data Center BEGINDATE: 1979-04-02T00:00:00Z ENDDATE: 2007-12-31T00:00:00Z 2023-11-28T23:42:10Z https://search.dataone.org/view/sha256:99973941e6ad6db99511a840819f0b8f39ffe8630ae5750cae715bb0f7555777 unknown Dataset dataone:urn:node:NSIDC 2024-06-03T18:20:13Z 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. Dataset Arctic Arctic Regional Climate Assessment Greenland Ice Sheet PARCA Program for Arctic Regional Climate Assessment Unknown Arctic Greenland |
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description |
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. |
format |
Dataset |
author |
NASA National Snow and Ice Data Center Distributed Active Archive Center National Snow and Ice Data Center |
spellingShingle |
NASA National Snow and Ice Data Center Distributed Active Archive Center National Snow and Ice Data Center Greenland Ice Sheet Melt Characteristics Derived from Passive Microwave Data, Version 1 |
author_facet |
NASA National Snow and Ice Data Center Distributed Active Archive Center National Snow and Ice Data Center |
author_sort |
NASA National Snow and Ice Data Center Distributed Active Archive Center |
title |
Greenland Ice Sheet Melt Characteristics Derived from Passive Microwave Data, Version 1 |
title_short |
Greenland Ice Sheet Melt Characteristics Derived from Passive Microwave Data, Version 1 |
title_full |
Greenland Ice Sheet Melt Characteristics Derived from Passive Microwave Data, Version 1 |
title_fullStr |
Greenland Ice Sheet Melt Characteristics Derived from Passive Microwave Data, Version 1 |
title_full_unstemmed |
Greenland Ice Sheet Melt Characteristics Derived from Passive Microwave Data, Version 1 |
title_sort |
greenland ice sheet melt characteristics derived from passive microwave data, version 1 |
publishDate |
|
url |
https://search.dataone.org/view/sha256:99973941e6ad6db99511a840819f0b8f39ffe8630ae5750cae715bb0f7555777 |
op_coverage |
BEGINDATE: 1979-04-02T00:00:00Z ENDDATE: 2007-12-31T00:00:00Z |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Arctic Regional Climate Assessment Greenland Ice Sheet PARCA Program for Arctic Regional Climate Assessment |
genre_facet |
Arctic Arctic Regional Climate Assessment Greenland Ice Sheet PARCA Program for Arctic Regional Climate Assessment |
_version_ |
1800869741344063488 |