International Laser Ranging Service

A service of the International Association of Geodesy

NASA will be performing network maintenance on Wednesday, November 20, 2024, between 11:00 AM EST and 1:00 PM EST (16:00 to 18:00 UTC). There will be two periods of about five minutes of disruption. During these peroids, the ILRS website will be unavailable during the outages. If you experience problems outside this window, contact support-cddis@nasa.gov.

Quick Links

Links to Altimetry Sites

Altimetry Atlas - mean sea surface and gravity anomaly maps of the oceans.
Laser Altimeter Processing Facility - processing and distributing data products acquired by experimental airborne and spaceborne laser altimeters developed within Goddard's Laboratory for Terrestrial Physics
Satellite Radar Altimetry - satellite altimetry offers the possibility to measure sea surface heights globally.
TOPEX/Poseidon: The Ocean Topography Experiment - mission to monitor global ocean circulation, discover the tie between the oceans and atmosphere, and improve global climate predictions.

International Laser Ranging Service

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Quick Links

Links to Altimetry Sites