GLAS/ICESat L2 Global Land Surface Altimetry Data (HDF5) V034

GLAH06 is used in conjunction with GLAH05 to create the Level-2 altimetry products. Level-2 altimetry data provide surface elevations for ice sheets (GLAH12), sea ice (GLAH13), land (GLAH14), and oceans (GLAH15). Data also include the laser footprint geolocation and reflectance, as well as geodetic, instrument, and atmospheric corrections for range measurements. The Level-2 elevation products, are regional products archived at 14 orbits per granule, starting and stopping at the same demarcation (± 50° latitude) as GLAH05 and GLAH06. Each regional product is processed with algorithms specific to that surface type. Surface type masks define which data are written to each of the products. If any data within a given record fall within a specific mask, the entire record is written to the product. Masks can overlap: for example, non-land data in the sea ice region may be written to the sea ice and ocean products. This means that an algorithm may write the same data to more than one Level-2 product. In this case, different algorithms calculate the elevations in their respective products. The surface type masks are versioned and archived at NSIDC, so users can tell which data to expect in each product. Each data granule has an associated browse product.

Data and Resources

Additional Info

Field Value
Maintainer NSIDC Services
Last Updated March 31, 2025, 17:13 (UTC)
Created March 31, 2025, 17:13 (UTC)
Identifier C1000000443-NSIDC_ECS
Issued 2003-02-20
Language {en-US}
Modified 2009-10-11
Theme {geospatial}
accessLevel public
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citation GLAS/ICESat L2 Global Land Surface Altimetry Data (HDF5) V034. Version 034. Archived by National Aeronautics and Space Administration, U.S. Government, NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/ICESAT/GLAS/DATA211.
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harvest_source_id 61638e72-b36c-4866-9d28-551a3062f158
harvest_source_title DNG Legacy Data
landingPage https://doi.org/10.5067/ICESAT/GLAS/DATA211
metadata_type geospatial
programCode {026:001}
publisher NASA NSIDC DAAC
resource-type Dataset
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spatial -180.0 -86.0 180.0 86.0
temporal 2003-02-20T00:00:00Z/2009-10-11T23:59:59.999Z