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The National Oceanographic Data Center (NODC) manages the acquisition, ingest processing, quality control and long-term preservation of oceanographic data. more...

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Oceanographic data in digital form is sorted, categorized and assigned unique identification numbers at ingest (non-digital data and information are normally incorporated in the NOAA Library, but are always considered for future conversion to digital form to support modern access and retrieval methodologies). The data are scanned for computer viruses, and cryptographic checksums are generated and stored with the original data files so data integrity can be monitored and verified over extended time periods and across generations of storage technologies. A copy of the data is written to removable media for off-site storage. A number of data products are derived from the NODC data holdings to extend the utility of the data and information.

History

Established in 1961, the NODC was originally an interagency facility administered by the U.S. Naval Hydrographic (later Oceanographic) Office. The NODC was transferred to NOAA in 1970 when NOAA was created by Executive Order.

Mission

In the words of its charter, the NODC serves to "acquire, process, preserve, and disseminate oceanographic data." Its primary mission is to ensure that global oceanographic data collected at great cost is maintained in a permanent archive that is easily accessible to the world science community and to other users.

More specifically, the NODC serves the U.S. with data and information for understanding the ocean. NODC archives and provides public access to oceanographic observational data and products, provides scientific oceanographic data services, and conducts assessments of the ocean environment. NODC also operates NOAA's Central and Regional Libraries. These libraries provide environmental references services that support NOAA research, and other technical information retrieval services to NOAA staff; and maintain the official archives for NOAA documents. Internationally, NODC hosts the World Data Center for Oceanography, Silver Spring under the auspices of the International Council of Scientific Unions and the U.S. National Academy of Sciences.

Infrastructure

Storage

The NODC archive holdings include all the data acquired in its original form, as well as project and product files of data extractions. Every data acquisition is assigned a unique identification number to be used as a lifetime reference to that data. All data are passed through context verification prior to entry into the NODC data holdings. Also, checksum and byte count values are computed to tag to the data for continuous validation and verification processes used to maintain the integrity of the data. Metadata describing each acquisition are appended to new data for internal record management. Each unique data set referenced in the NOAA and NNDC server systems contains a metadata description, to aid in search and discovery processes.

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