Service Interruption

The NSIDC Web site and data services are currently having intermittent problems and may be unavailable. We are working to restore these services as soon as possible and apologize for any inconvenience this may cause. Please contact NSIDC User Services for assistance.

NASA Distributed Active Archive Center (DAAC) at NSIDC

ICESat / GLAS Data

Ice, Cloud, and land Elevation / Geoscience Laser Altimeter System


ICESat Laser Spots

ICESat Laser Spots

Short time lapse of green laser reflected in clouds of the night sky during overflight of ICESat soon after laser was first turned on (12 March 2003). Image courtesy of Ball Aerospace.