1. 1 CLASS – Simple NOAA Archive Access Portal SNAAP Eric Kihn and Rob Prentice NGDC CLASS Developers Meeting July 14th, 2008 Simple NOAA Archive Access Portal

2. 2 CLASS – Simple NOAA Archive Access Portal SNAAP Goals Integrate diverse systems via a standards based, user focused WS interface Demonstrate the concept of “fundamental separation” of archive and storage from access Create a tool that shows the benefit of API’s for users Discover new technology and evaluate cutting edge tools for handling integration and presentation Document integration of multiple data types and sources through an single API (time-series, grid, swath, etc..)

3. 3 CLASS – Simple NOAA Archive Access Portal The Data Environment Now CLASS ADS Web Interface Subscriptions HumanMachine Data Providers VisualizationInventory Order NMMR/Metadata NGDC/SPIDR Web Interface Metadata SPIDR WS SNAAP Web Interface Metadata Data Access

4. 4 CLASS – Simple NOAA Archive Access Portal Three Simple Items Search for appropriate data sets Discover data by time, type, location, abstract, etc. Support for multiple metadata schema Standards based This is in CLASS 4.3.3 – awaiting policy Order Data Needs a standard way to describe ordering Ordering extensions + Standard metadata Needs some framework for service integration (i.e. transforms) Integration Layer We are using OGSA-DAI for the demo but this is not a final choice Should not affect the consumer at any rate.

5. 5 CLASS – Simple NOAA Archive Access Portal So a new provider would have to … Create a standard metadata record for the data set. (They should be doing this anyway). Create an Ordering extension document. If they are offering web distribution this is trivial. Write an adapter to the middle layer, unless they have a supported service (like JDBC, FTP, etc..) in which case adapt an existing one.

6. 6 CLASS – Simple NOAA Archive Access Portal Advantages This approach mirrors that of the highly successful OGC specification for map services (what, make, retrieve) It minimizes entry burden for new providers Its simplicity makes it scalable It doesn’t preclude or interfere with on-going activity, just opens up new integration possibilities.

7. 7 CLASS – Simple NOAA Archive Access Portal Current snapshot of the CLASS API architecture

8. 8 CLASS – Simple NOAA Archive Access Portal Data Order Flow

9. 9 CLASS – Simple NOAA Archive Access Portal CLASS Ordering Extensions (OE) schema upper level

10. 10 CLASS – Simple NOAA Archive Access Portal CLASS OE schema: parameters and time

11. 11 CLASS – Simple NOAA Archive Access Portal CLASS OE schema: map and ROI

12. 12 CLASS – Simple NOAA Archive Access Portal CLASS OE schema: station map

13. 13 CLASS – Simple NOAA Archive Access Portal Why OGSA-DAI? Standard tool in the Grid community Includes a “process” for extraction Built in support for asynchronous transactions Includes support for domain login Looked at alternatives like OpenDap, WCS, Custom applications some documentation forth coming Problem: Its very complex and not well accepted in NOAA

14. 14 CLASS – Simple NOAA Archive Access Portal Visualization screens – 1 time series and map server

15. 15 CLASS – Simple NOAA Archive Access Portal Visualization screens – 2 NASA World Wind plugins

16. 16 CLASS – Simple NOAA Archive Access Portal MS Excel and NASA World Wind interoperability for trajectory data Excel with track points Excel with data along tracks Drag & Drop controls NASA World Wind

17. 17 CLASS – Simple NOAA Archive Access Portal Asynchronous Ordering CLASS API Demonstration

18. 18 CLASS – Simple NOAA Archive Access Portal Orbit Inventory List

19. 19 CLASS – Simple NOAA Archive Access Portal User Basket (Order & Check- Status)

20. 20 CLASS – Simple NOAA Archive Access Portal Order System Entities Granule List now using ECHO XML in the return New entity “Data Basket” – handle to collection of order Demo currently orders all data centrally will need to be adapted

21. 21 CLASS – Simple NOAA Archive Access Portal Order Sequence Diagram Data basket ID is the API handle OGSA-DAI activities handle the extraction and packaging Status check is currently by basket only (XML return) Finished granules return a URL handle to the entity

22. 22 CLASS – Simple NOAA Archive Access Portal Future Plans Plan to deliver two documents A discussion of the OGSA-DAI choice and its implications A detailed discussion of the use of baskets Would like to identify a CLASS build and date for OE inclusion This would require some review process (including outside) and a versioning of OE Plan to include AVHRR in in the asynchronous demo Plan to include non-granule based asynchronus (i.e. models, transforms) data extractions Enhance the connection with GEO-IDE

23. 23 CLASS – Simple NOAA Archive Access Portal Future plans Extend the OE documentation to the CLASS development team and provide support Extensive work on the connector layer Expand proto-type to cover more NOAA and non-NOAA data types and services and document lessons learned Release the work to the public http://sourceforge.net/projects/vxoware/ http://sourceforge.net/projects/vxoware/ Seek outside review