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GLAS/ICESat L1B Global Elevation Data (HDF5), Version 34
GLAH06 Level-1B Global Elevation is a product that is analogous to the geodetic data records distributed for radar altimetry missions. It contains elevations previously corrected for tides, atmospheric delays, and surface characteristics within the footprint. Elevation is calculated using the ice sheet parameterization. Additional information allows the user to calculate an elevation based on land, sea ice, or ocean algorithms. Each data granule has an associated browse product.
Release 34 incorporates fixes for several data issues that were determined to exist in the GLAS Release 33 data products.
|Temporal Resolution:||23 minute|
|Data Contributor(s):||David Hancock, H. Zwally, Robert Schutz, John Dimarzio|
|Metadata XML:||View Metadata Record|
As a condition of using these data, you must cite the use of this data set using the following citation. For more information, see our Use and Copyright Web page.Zwally, H. J., R. Schutz, J. Dimarzio, and D. Hancock. 2014. GLAS/ICESat L1B Global Elevation Data (HDF5), Version 34. [Indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. doi: http://dx.doi.org/10.5067/ICESAT/GLAS/DATA109. [Date Accessed].
The elevation data is relative to the ellipsoid.
The data also have a parameter indicating the geoid height which is the height of the geoid above the ellipsoid for the first and last shot in the record.
Yes, it is an element of: GLA06 (GLAH06), GLA12 (GLAH12), GLA13 (GLAH13), GLA14 (GLAH14), GLA15 (GLAH15).
The Multiple Scattering Warning Flag, i_cld1_mswf (cld1_mswf_flg) is based on the total... read more
The standard fit is optimized for "ice sheet-like" returns. The majority of these are single-peaked, narrow waveforms. The standard fit allows for only two peaks. Alternate fitting is meant to capture up to six peaks. More peaks are necessary for more complex waveforms over land, vegetated... read more
The following table describes the data subsetting and reformatting services that are currently available for ICESat/GLAS HDF5 data via the NASA Earthdata Search tool.