Data Sets
Note: Correction to ICESat Data Product Surface Elevations. In January 2013, the ICESat Project Science Team announced that a correction to ICESat surface elevation data products is necessary due to an error in the range determination from transmit-pulse reference selection (centroid vs. gaussianGaussian, G-C). The following products are affected by this finding: GLA06 (global elevation), GLA12 (ice sheet), GLA13 (sea ice), and GLA15 (ocean). GLA14 users who use the range increment for the alternative Gaussian-fitted peaks may want to also use the correction. For details, see the Correction to ICESat Data Product Surface Elevations Web page.
The following tables list the standard NASA GLAS data products and the related GLAS data products available from NSIDC. To view the documentation for the standard GLAS data products, click on the long name in the Standard GLAS Data Products table; to order the standard data, see the Order Data Web page. To view the documentation and to order data for the related GLAS data products, click on the data product name in the Related GLAS Data Products table.
The data products are grouped into the following categories:
Standard GLAS Data Products (Binary)
Note: L1A, L1B, and L2 in the data set titles refer to data processing levels, not laser identifiers.
See Preliminary ICESat/GLAS Data for information
about the preliminary versions of ICESat/GLAS products first released
on 31 October 2003.
Standard GLAS Data Products (HDF5)
The ICESat GLAS Release 33 HDF5 data are converted directly from the Release 33 binary data. Data files were not re-processed during conversion. However, parameters in the HDF5 files are re-ordered, re-named, and logically grouped to take advantage of the HDF5 file structure.
Note: L1A, L1B, and L2 in the data set titles refer to data processing levels, not laser identifiers.
Currently available Altimetry products:
Related GLAS Data Products
Note: The table below lists products generated using standard GLAS data products.
DIF ID |
Data Product Name |
Projection |
|---|---|---|
| NSIDC-0422 | Antarctic 1 km Digital Elevation Model (DEM) from Combined ERS-1 Radar and ICESat Laser Satellite Altimetry | Polar Stereographic |
| NSIDC-0304 | GLAS/ICESat 500 m Laser Altimetry Digital Elevation Model of Antarctica | Polar Stereographic |
| NSIDC-0305 | GLAS/ICESat 1 km Laser Altimetry Digital Elevation Model of Greenland | Polar Stereographic |
| ICESat: Sea Ice Thickness and Freeboard | Polar Stereographic | |
| NSIDC-0393 | Arctic Sea Ice Freeboard and Thickness | Polar Stereographic |
