doi: 10.5067/GNSS/gnss_measures_tropo_001

• Data Center Citation
• Data Citation
• Summary
• Description
• Data Access
• Documentation

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

ESESES MEaSUREs Daily 5-minute GNSS precise point positioning (PPP) tropospheric estimates [online]. Available from the NASA Crustal Dynamics Data Information System DAAC, Greenbelt, MD, USA at: http://dx.doi.org/10.5067/GNSS/gnss_measures_tropo_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: Daily 5-minute GNSS precise point positioning (PPP) tropospheric estimates available from the Crustal Dynamics Data Information System (CDDIS)
• Format: SINEX, GipsyX 1.x Version Number 002
• Spatial Coverage: 90.0 to -90.0, 180.0 to -180.0
• Temporal Coverage: 1992-01-01 to present
• Temporal Resolution: Daily
• File Size: 900 bytes/site/day
• Platforms: Multiple GNSS

Description

Making Earth System Data Records for Use in Research Environments (MEaSUREs) empowers the research community to participate in developing and generating data products that complement and augment NASA produced and distributed Earth science data products. NASA's Enhanced Solid Earth Science Earth Science Data Record (ESDR) System (ESESES) continues and extends mature geodetic data product generation and archival as part of the MEaSUREs SESES project providing new, multi-decade, calibrated and validated geodetic-derived ESDRs obtained by the Scripps Institution of Oceanography (SIO) and Jet Propulsion Laboratory/California Institute of Technology (JPL/Caltech). These data-derived products include continuous multi-year high-rate GNSS, seismogeodetic, and meteorological time series, a catalog of transient deformation in tectonically active areas known for aseismic motion such as ETS with focus in Cascadia, and continuous estimation and cataloging of total near-surface water content derived from continuous GNSS time series over the continental U.S.

The Daily 5-minute GNSS precise point positioning (PPP) tropospheric estimates products are daily 5 min PPP trop estimates and/or long-term time series of troposphere delay (5-min resolution) at geodetic stations, necessarily estimated during position time series production. Precipitable Water is provided for sites with onsite meteorological RINEX surface observations. Surface observations for the closest timestamp to the ZTD epoch (not to exceed 30 minutes difference) are used to convert ZTD to PW. Height of the meteorological instrument is assumed to be the same as the height of the GPS antenna.

Data Access

The daily 5-minute GNSS precise point positioning (PPP) tropospheric estimates data products (including latest solution) are online:

in subdirectories by year as follows:

YYYY/JPL.SESES.YYYY.DDD.sinex_tro.tar.gzV1

YYYY/JPL.ESESES.YYYY.DDD.sinex_tro.tar.gzV2

Code	Meaning
YYYY	4-digit year
DDD	3-digit day of year
.tar	Unix tar file
.gz	gzipped file

Documentation

http://cddis.nasa.gov/Data_and_Derived_Products/GNSS/MEaSUREs_products.html

See the ESESES Algorithm Theoretical Basis Document (ATBD) for detailed descriptions of the products: http://garner.ucsd.edu/pub/measuresESESES_products/ATBD/ESESES-ATBD.pdf