NASA CDDIS Archive for Space Geodesy and Crustal Dynamics

NASA's Crustal Dynamics Data Information System (CDDIS) archives and distributes space geodesy data sets for the global scientific community. Established in 1982, it serves as a global data center for international services including the International GNSS Service, Laser Ranging Service, VLBI Service, DORIS Service, and Earth Rotation Service. The archive contains data from Global Navigation Satellite Systems (GPS, GLONASS), laser ranging, Very Long Baseline Interferometry, and Doppler Orbitography.

Use Cases

• Analyzing plate tectonics and crustal motion rates using GNSS coordinate time series.
• Studying Earth rotation and polar motion variations through Very Long Baseline Interferometry (VLBI) data.
• Calibrating satellite orbits and validating gravitational field models with Satellite Laser Ranging (SLR) measurements.
• Integrating multiple geodetic techniques (GNSS, SLR, VLBI, DORIS) for a unified reference frame.

Strengths

• Serves as a global data center for five major international geodetic services since 1992.
• Archives data from four primary space geodetic techniques: GNSS, laser ranging, VLBI, and DORIS.
• Has been operational and collecting data since its establishment in 1982.

Limitations

• Specific row counts, file sizes, and detailed column schemas are not provided by any source.
• License information is inconsistently reported as 'other-license-specified' or 'None' across platforms.

Provenance

Source

NASA's Crustal Dynamics Data Information System (CDDIS) at Goddard Space Flight Center.

Collection Method

Archived and distributed as a dedicated data bank supporting NASA's Space Geodesy Project and Earth Science Enterprise.

Time Range

Data collection ongoing since 1982.

Freshness

2026-03-13 02:36:31.103648

Geography

Global.