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Overview


Welcome to the Geoscience Laser Altimeter System (GLAS) Software Development Team (SDT) Ground Data System Home Page. The SDT supports the GLAS Science Team to develop the GLAS software to produce the Level 1 and Level 2 data products. The GLAS instrument is on the Ice, Cloud, and land Elevation Satellite (ICESat). The GLAS SDT is managed by the NASA Goddard Space Flight Center, Greenbelt, MD, USA.

Icesat launched on January 13, 2003 UTC

Icesat launched on January 13, 2003 UTC Icesat was launch successfully from Vandenberg Air Force Base on January 12,2003 16:45 PST. The launch vehicle was a Boeing Delta II. Separation of the ICESat spacecraft occurred 64 minutes after launch at 5:49 p.m. PST. Initial contact with ICESat was made 75 minutes after launch at 6 p.m. PST as the spacecraft passed over the Svalbard Ground Station in Norway.

ICESat is the latest in a series of Earth Observing System spacecraft, following the Terra satellite launched in December 1999, and the Aqua satellite launched earlier in May of this year. The primary role of ICESat is to quantify ice sheet growth or retreat and to thereby answer questions concerning many related aspects of the Earth climate system, including global climate change and changes in sea level.
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Announcements

GSAS V5.4.1 Release Notes

 (08/22/2008 11:00 AM) 
A pdf of the GSAS Version 5.4.1 Release Notes PDF was added to Documents.

GSAS V5.4 Release Note

 (06/25/2008 10:47 PM) 
A pdf of the GSAS Version 5.4 Release Notes PDF was added to Documents.

GSAS V5.4 Product Formats

 (06/25/2008 10:31 PM) 
The GSAS v5.4 product formats are now available.

GSAS V5.3 Product Formats

 (08/30/2006 01:40 PM) 
The GSAS v5.3 product formats are now available.

GSAS V5.3 Release Notes

 (08/30/2006 11:12 AM) 
A pdf of the Revised GSAS Release Notes, Version 5.3 was added to Documents.

GSAS V5.2 Product Formats

 (02/02/2006 03:15 PM) 
The GSAS v5.2 product formats are now available.

GSAS V5.2 Release Notes

 (02/02/2006 02:30 PM) 
A pdf of GSAS Release Notes, Version 5.2 was added to Documents.

GSAS V5.1 Release Notes

 (11/04/2005 01:56 PM) 
A pdf file of GSAS Release Notes, Version 5.1 was added to Documents.

GSAS V5.1 Product Formats

 (11/04/2005 12:31 PM) 
The GSAS v5.1 product formats have been released. Please note that GSAS 5.1 code did not change the product format, but the 5.1 database contains several corrections to the v5.0 descriptions.

GSAS V5.0 Product Formats

 (10/11/2005 10:10 AM) 
The GSAS v5.0 product formats have been released.

GLAS Science Telemetry Packets, Revision E

 (06/28/2005 10:27 AM) 
A pdf of GLAS Science Telemetry Packets, Revision E was added to Documents.

GLAS Housekeeping and Diagnostic Telemetry Packets, Revision C

 (06/28/2005 10:26 AM) 
A pdf of GLAS Housekeeping and Diagnostic Telemetry Packets, Revision C was added to Documents.

The Algorithm Theoretical Basis Document for Level 1A Processing, Version 1.6

 (06/28/2005 10:11 AM) 
A pdf of The Algorithm Theoretical Basis Document for Level 1A Processing, Version 1.6, June 2005 was added to Documents.

V4.3 Product Descriptions Posted

 (05/12/2005 01:02 PM) 
The Product description database was updated to match GSAS release 4.3. Corresponding Granules are labelled as Release 22.

GSAS V5.0 Release Notes

 (05/11/2005 04:03 PM) 
A pdf file of GSAS Release Notes, Version 5.0 was added to Documents.

GSAS Release Notes - Version 4.2

 (03/10/2005 11:20 AM) 
A pdf file of GSAS Release Notes, Version 4.2 was added to Documents.

Product Descriptions Updated

 (03/10/2005 10:53 AM) 
The Product description database was updated to match GSAS release 4.1. Corresponding Granules are labelled as Release 19.

Recent Document Additions (Since January 2004)

 (03/10/2005 10:49 AM) 
Use the "Documents" link on the left side of the page to view these documents.
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Last Updated: 09/15/2008
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