US Government security requirements no longer permit CDDIS to offer data via traditional unencrypted anonymous ftp; this service was discontinued on October 31, 2020. All data are still available, however access must be via HTTPS or ftp-ssl.

Instructions with examples and our FAQ can be found at: https://cddis.nasa.gov/Data_and_Derived_Products/CDDIS_Archive_Access.html.

If you still have difficulty after reading and attempting the examples on that page, please contact us at support-cddis@earthdata.nasa.gov.

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CDDIS Archive Explorer

The CDDIS Archive Explorer application allows users to query the data holdings of the CDDIS to learn more about what data are available for download. Note: Queries for VLBI data holdings will be available for browsing soon. To learn more about the Archive Explorer application, please consult the FAQ

Data Type GNSS SLR DORIS VLBI
Data Rate Daily Hourly High-rate

Temporal Search Start Date: End Date:

Spatial Search
North: West: East: South: