NASA’s Crustal Dynamics Data Information System (CDDIS) archives Very Long Baseline Interferometry (VLBI) level 2 vgosDB format data holdings.
DOI: 10.5067/VLBI/vlbi_L2_VGOSDB_001
Data Center Citation
Noll, Carey E., The Crustal Dynamics Data Information System: A resource to support scientific analysis using space geodesy, Advances in Space Research, Volume 45, Issue 12, 15 June 2010, Pages 1421-1440, ISSN 0273-1177, http://dx.doi.org/10.1016/j.asr.2010.01.018.
Data Citation
International VLBI Service for Geodesy and Astrometry (IVS)CDDIS VLBI level 2 vgosDB format data [online]. Available from the NASA Crustal Dynamics Data Information System DAAC, Greenbelt, MD, USA at: http://dx.doi.org/10.5067/VLBI/vlbi_L2_VGOSDB_001, Accessed [[enter user data access date]].
Other standard citation formats may be used for this data set and can be found at the DOI Citation Formatter website.
More information about CDDIS data citations and acknowledgments is available.
Summary
- Name: CDDIS VLBI level 2 vgosDB format data available from the Crustal Dynamics Data Information System (CDDIS)
- Format: vgosDB
- Spatial Coverage: 90.0 to -90.0, 180.0 to -180.0
- Temporal Coverage: 2017 - present
- Temporal Resolution: Typically 24-hours for one VLBI session, can vary
- File Size: Variable, from ∼ 50Kb to 50Mb
- Platforms: Very Long Baseline Interferometry (VLBI)
Description
This CDDIS collection is composed of geodetic, Very Long Baseline Array (VLBI) level 2 observational and supporing data (including observations, standard deviations, station coordinates, and more) and derived products which are stored and exchanged in a format named vgosDB, which is the International VLBI Service for Geodesy and Astrometry (IVS) standard format for storing, transmitting, and archiving VLBI data. vgosDB datasets are comprised of NetCDF and ASCII files which contain almost all the information that is required to process a single VLBI session.
Data Access
The VLBI vgosDB data are online: https://cddis.nasa.gov/archive/vlbi/ivsdata/vgosdb/
in subdirectories by year as follows: YYYY/YYMMMDDXX.tgz
Code | Meaning |
---|---|
YYYY | 4-digit year |
YY | 2-digit year |
MMM | 3-character month (APR, AUG, etc.) |
DD | 2-digit day |
XX | 2-character designation indicating the particular session |
.tgz | gzipped tar file |