NOAA archive and access services for Jason-2/3 products

Baker-Yeboah Sheekela (NOAA National Centers for Environmental Information (NCEI)-CICS/ESSIC/UMD, United States)


Yongsheng Zhang (NOAA National Centers for Environmental Information (NCEI)-CICS/ESSIC/UMD, United States); Deirdre Byrne (NOAA National Centers for Environmental Information (NCEI), United States)

Event: 2015 Ocean Surface Topography Science Team Meeting

Session: Outreach, Education and Altimetric Data Services

Presentation type: Type Poster

In its role as the US archive for oceanographic data, the NOAA National Centers for Environmental Information (NCEI) provides scientific stewardship of the data including near real-time and delayed-mode product distribution, rigorous archive services, custom products, and long-term data stewardship for the OSTM/Jason-2 and Jason-3 products. NCEI’s basic services for Jason2/3 could be outlined as the followings:
• Primary Datasets: O/I/GDR. Within the past few years, NCEI has instituted a mirror service, replicating all GDRs directly from NOAA's Data Distribution Service. This has reduced the latency of providing the OGDR to the public to under an hour. The OGDR is currently distributed through NCEI. Service of all level-2 X-GDR products continues to be provided through ftp, http, OPeNDAP, and THREDDS Data Sever (TDS).
• Enhanced Data Rich Inventory (RI): Data Quality Monitoring (DQM) for the Jason-2 GDR/IGDR is provided on a per-pass basis. The data assuarance decriptive statistics are computed at the time of ingest of each data file into the archive and stored in CF-compliant NetCDF format. Visualization of these statistics is provided via a Live Access Server ( and Jason-2 DQM homepage (, and they are publicly accessible via ftp, http, OPeNDAP and TDS at DQM was instituted for the OGDR this year and is currently experimental.
• Derived products: Our Data Quality Monitoring system also automatically generates cycle-mean 3.0°x1.0° and 0.25ox0.25o grids for the monitored I/O/GDR variables (including SLA and SWH). The 3.0°x1.0° gridded I/GDR data (in NetCDF format) are accessible via ftp, http, OPeNDAP and TDS (
• Data discovery: While Jason-2/OSTM products news and RSS-feed webpages have been developed for improved data access, data discovery has been enhanced by implementation of a Geoportal server (
• Preparation for future Jason missions: Archive, access and quality monitoring tools developed for Jason-2 are being generalized into NOAA the Jason Ground System (NJGS) to support Jason-2 and Jason-3 simultaneously in the future. This will allow for a consistent, integrated access to data from the two satellites.

Poster show times:

RoomStart DateEnd Date
Grand Ballroom Foyer Thu, Oct 22 2015,11:00 Thu, Oct 22 2015,18:00
Baker-Yeboah Sheekela
NOAA National Centers for Environmental Information (NCEI)-CICS/ESSIC/UMD
United States