Data Information

Data Information

  • ICESat/GLAS L1B Global Elevation Data, 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.
    Version Summary:
    Release 34 incorporates fixes for several data issues that were determined to exist in the GLAS Release 33 data products. More information about the ICESat data

  • ICESat-2 Data (Simulated)

    More information coming soon.

Mission Information

  • ICESat

    ICESat data available from OpenAltimetry are the 15 Level-1 and Level-2 data products from the Geoscience Laser Altimeter System (GLAS) instrument that was aboard the NASA Ice, Cloud, and land Elevation (ICESat) satellite and distributed by NSIDC. Launched on 12 January 2003 the ICESat's science mission ended after seven years in orbit and 18 laser-operations campaigns.

    The main objective of the GLAS instrument was to measure ice sheet elevations and changes in elevation through time. Secondary objectives included measurement of cloud and aerosol height profiles, land elevation and vegetation cover, and sea ice thickness.

  • ICESat-2

    The ICESat-2 mission will deploy a spaceborne sensor to collect altimetry data of the Earth's surface. The sole instrument on ICESat-2 will be the Advanced Topographic Laser Altimeter System (ATLAS) instrument that will measure ice sheet elevation change and sea ice thickness, while also generating an estimate of global vegetation biomass. ICESat-2 will continue the important observations of ice-sheet elevation change, sea-ice freeboard, and vegetation canopy height begun by ICESat in 2003.