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Data Set ID:
GLAH04

GLAS/ICESat L1A Global Laser Pointing Data (HDF5), Version 33

Level-1A global laser pointing data (GLAH04) contain two orbits of attitude data from the spacecraft star tracker, instrument star tracker, gyro, and laser reference system, and other spacecraft attitude data required to calculate precise laser pointing.

Version Summary:

For information about Version 33, see the NSIDC ICESat Description of Data Releases page.

Geographic Coverage

Spatial Coverage:
  • N: 86, S: -86, E: 180, W: -180

Spatial Resolution:
  • 60 m to 70 m x 60 m to 70 m
Temporal Coverage:
  • 20 February 2003 to 11 October 2009
Temporal Resolution: 3 hour
Parameter(s):
  • Platform Characteristics > Attitude Characteristics
  • Platform Characteristics > Viewing Geometry
Platform(s) ICESAT
Sensor(s): ALTIMETERS, GLAS
Data Format(s):
  • HDF
Version: V33
Data Contributor(s): H. Zwally, Robert Schutz, James Abshire

Data Citation

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, and J. Abshire. 2013. GLAS/ICESat L1A Global Laser Pointing Data (HDF5), Version 33. [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/DATA104. [Date Accessed].
No technical references available for this data set.

FAQ

Why is spatial searching not enabled for GLA01 (GLAH01) to GLA04 (GLAH04)?

The orbit for GLA01 (GLAH01) and GLA02 (GLAH02) is a predicted orbit and does not show any target-of-opportunity pointing. The GLAS science team decided not to enable spatial searching for these two products in... read more

How To

Stepping through the HDFView User Guide with GLAS HDF5 Data
HDFView

https://support.hdfgroup.org/products/java/hdfview/

When you first open HDFView, the HDFView window appears with an empty tree and data panel.

The main window consists of six different components... read more