ICESat-1, Southern Hemisphere
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NASA Goddard Space Flight Center |
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Dr. Nathan Kurtz, NASA Goddard Space Flight Center
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Goddard web site | ||||||||||||||||||||||||||||||||||||||||||
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Geoscience Laser Altimeter System (GLAS) on nthe ICESat-1 satellite | ||||||||||||||||||||||||||||||||||||||||||
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Antarctica | ||||||||||||||||||||||||||||||||||||||||||
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2004-2007 in 13 campaigns:
N obs is the number of clusters retained for each campaign.
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This data set provides measurements of sea ice freeboard and sea ice thickness for the Antarctic region. The data were acquired from the Ice, Cloud, and land Elevation Satellite (ICESat) Geoscience Laser Altimeter System (GLAS) instrument, the Special Sensor Microwave/Imager (SSM/I). The data span thirteen GLAS campaigns, laser 2004 to 2007. Data parameters include sea ice freeboard and sea ice thickness measured in meters. The data at Goddard are provided in three formats: ASCII track data with individual retrieval points, ascii gridded and interpolated data for each campaign on a 25-km grid, and gridded and interpolated data for each season (FM, MJ, or ON, averaged over all years). The ASCII track data have a resolution of about 175 meters in the along-track direction. The track data for each individual laser campaign have been averaged for clusters that fall within 50-km square grid cells. Summary statistics of both freeboad and ice thickness are computed. At this time no distribution files are included. At least 250 point values are required within a 50-km cell for the summary to be retained. |
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13 Laser campaigns, 12,432 clusters, 5,370,762 point values | ||||||||||||||||||||||||||||||||||||||||||
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Kurtz, N.T., and T. Markus, Satellite observations of Antarctic sea ice thickness and volume, J. Geophys. Res., 117, C08025, doi:10.1029/2012JC008141, 2012. Markus, T., Massom, R., Worby, A., Lytle, V., Kurtz, N., and T. Maksym, Freeboard, snow depth, and sea ice roughness in East Antarctica from in-situ and multiple satellite data, Ann. Glaciol., 52(57), 2011. |
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ICESat and ICESat data processing are fully supported by NASA |
Map of cluster locations from all campaigns
The maps show the locations and mean ice thickness of all clusters for all laser periods. Click on a map to see an enlarged version.
Number of clusters and thickness box plots for each laser campaign
The box plots show the median, the 5th, 25th and 75th, and 95th percentiles. Click on the plot to see an enlarged version.