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Coastal Ocean Model Assessment

Use Case – Find available ocean model and ocean data in  specified bounding box and time window

Note

  • Rich is still editing this
  • This use case was written with the assumption that GDP was going to be used to support the workflow defined. This does not need to be the case--other technologies could be used to replace GDP if desired.
  • GDP should probably be thought of as an "working prototype." It should not be considered an operational tool. If CDI or others want to move GDP to this next level, then planning (time, people, funding) for this should occur.

Summary

In order to provide meaningful information for both scientists and managers, the quality of coastal ocean modeling products must be assessed.   This involves finding both the available ocean models and the available physical oceanographic data in a specified geospatial bounding box and time range from multiple sources, and returning the results in a manner that allows immediate access to data in tools that scientists typically use.

Data

            Ocean model data comes from national operational centers (NCEP, NAVY, NOAA CO-OPS) as well as from government and academic institutions largely associated with the Integrated Ocean Observing System. Ocean observed data also comes from national centers (NDBC, NODC) as well as other governmental and academic institution.    The USGS has both archives of ocean model output, as well as collections of ocean observations, mostly related to sediment transport and coastal change projects.    The services are generally OPeNDAP and OGC Sensor Observation Service.  

Workflow

            A researcher who is interested in obtaining ocean model data and ocean obserational data will have GUI in their browser that will allow them to select a region and time window, and get back dataset metadata that includes SOS and OPeNDAP data URLs.    The GUI will generate a Restful URL that contains the search criteria in either OpenSearch or CSW, and this query will then be importable to Matlab so that a Matlab user can reuse the query, modifying the search parameters.    With the metadata results, the Matlab user has a tool that extracts the data URLs, and then allows  investigation and retrieval of the data required.    Thus we are only handling the search and retrieval of data based on space and time, not on data type.

Results

            This approach would greatly streamline the assessment of coastal ocean model data.  

Future Enhancements

              Rich Signell
Feb 2011