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WG Points of Contact: Terence Van Zyl, MERAKA Institute Hervé Caumont, OGC IP Team / ERDAS

GEO Architecture and Data Committee Task AR-07-02 Architecture Implementation Pilot Products, Sensors, Models Access Services WG. WG Points of Contact: Terence Van Zyl, MERAKA Institute Hervé Caumont, OGC IP Team / ERDAS December 3rd, 2008. Access WG Charter.

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WG Points of Contact: Terence Van Zyl, MERAKA Institute Hervé Caumont, OGC IP Team / ERDAS

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  1. GEO Architecture and Data CommitteeTask AR-07-02 Architecture Implementation PilotProducts, Sensors, Models Access Services WG WG Points of Contact: Terence Van Zyl, MERAKA Institute Hervé Caumont, OGC IP Team / ERDAS December 3rd, 2008

  2. Access WG Charter • The Access WG provides coordination and guidance to achieve interoperable Access Services to products, sensors and models. • This relies on the AIP-2 participant's offerings (their proposed contributions to the pilot). • By doing so, the Access WG contributes with other WG to enable a Global EO System of Systems, through scenarios and use cases definition.

  3. AIP-2 Participants with a focus on Access Services

  4. Data Product Access • 23 Primary responses: CIESIN, CNES, EPA, ESA, GEO-Ukraine, ICAN, ICT4EO, IP3, ISPRA, JAXA, Mines Paris Tech, NASA World Wind, NOAA IOOS, NOAA NCDC GOSIC, NOAA NCDC NEXRAD, NOAA NCDC NIDIS, NOAA NCDC NOMADS, NOAA/NASA GOES-R and GMU CSISS, Northrop Grumman, SURA/NIMSAT/GoMOOS, Spot Image, USGS, Washington Univ St. Louis • 15 Contributing responses: ACRF, Caribbean Flood Team, ERDAS, ESIP AQ Cluster, ESRI, ESRI Canada, NOAA SNAAP

  5. Data Product Access Topics • Services: WMS, WCS and WFS • Encodings Formats : NetCDF/CF, KML, GML, JPEG2000, PNGs, GeoTIFF, MrSID, Geolocated JPEGs, CADRG, CIB, Shapefile • EO Data: Radar, Optical, Weather, Precipitation, TRMM flash flood potential • ALOS Imagery: Panchromatic, Near IR, SAR • High-frequency radar • in situ oceanographic data • Coastal Web Atlas holdings • Multistandard platform (MapServer, ArcIms Server, SDE, etc) • SPIDR web services • IP3 ENM Species Distribution Analysis service • SoDa W*S is already a Special Argmt • Broker Service to access OGC Web services, THREDDS/OpenDAP, GBIF

  6. Sensors and Models Access • 7 Primary responses: GEO-Ukraine, ICT4EO, IP3, NOAA IOOS, Northrop Grumman, Spot Image, SURA/NIMSAT/GoMOOS • 5 Contributing responses: Caribbean Flood Team, Compusult, NASA World Wind, NOAA NCDC NEXRAD, Noblis

  7. Sensors and Models Access Topics • Sensor Web Enablement: SOS, SPS, SAS, SensorML, O&M • EO-1, TRMM, Envisat, SRTM, MODIS, RADAR, RT weather, fire • Weather, fire, flood areas and index • Flood model outputs • Bluesky Smoke model • Model Web • CALPUFF and WRF model outputs

  8. Goal, audience, and usage of the 'Use cases' • Use Cases are provided to model the interactions of a (sub)system under study with its environment (actors, being some kind of user interface or other systems) • Co-authored by systems analysts and end users • A starting point for tests design • Use Cases are developed by the AIPTransverse Technology WG • Scenarios are developed by the AIP Community WG • Both support AI Pilot storyboards, to test & demonstrateinteroperability amongst online persistent systems and services • Running a scenario over several systems • Activating systems functions as described in the use cases

  9. Basic set of use cases / capture persistent access • Accessing a product • Accessing a model • Accessing a sensor for observations • Accessing a rendered output from a product or model • Ordering a product • Invoking the disaster charter for access to products • Subscribing to a sensor alert • Commanding a sensor

  10. Accessing a Product • Description: • Access to various web resident services including WFS, WCS, OpenDAP; encodings; CRSs • Lead: • Hervé Caumont • Status: • Started • was agreed during WG Telecon • will be posted on WG Website (this week)

  11. Accessing a Model • Description: • Access to a web resident services that fronts a model • Lead • Glenn Rutledge • Status • Started

  12. Accessing rendered output from a product or model • Description: • Access to a map portrayal service for products or models visualization • Lead: • No lead • Status • Not started

  13. Accessing a Sensor for Observations • Description: • Access to a web resident sensor fronted by a web service supporting OGC-SOS • Lead • Luis Bermudez • Status • Started

  14. Subscribing to a Sensor Alert • Description: • Access to a web resident sensor fronted by a web service supporting OGC-SAS for the purpose of receiving alerts • Lead: • No Lead • Status: • Not started

  15. Commanding a Sensor • Description: • Access to a web resident sensor fronted by a web service supporting OGC-SPS for the purpose influencing future observations • Lead • Terence van Zyl • Status • Started

  16. Ordering a Product • Description: • Access a product through the tasking of a specific sensor/platform • Lead • No Lead • Status • Proposed as additional use case

  17. Invoking the Disaster Charter • Description: • Use case to describe how in the case of a disaster to speed up the process of access to the charter • Lead • No lead • Status • Proposed as additional use case

  18. Template for writing Access Use Cases

  19. How to populate the initial Use Cases • When writing, keep focus on the subsystem under study (the Web Coverage Service, the Sensor Alert subscription service…) • Give awaited inputs and provided outputs • Document for modularity • Use verbs / action (‘server’ receives request for a single band geoTIFF…, ‘server’ sends…) • Consider the cumulated / consolidated Use Cases view, and document the right modularity and uniqueness of each Use Case

  20. Simple example

  21. Status • General WG Tasks being completed • Arrive at a set of generic principles that underpin all persistent access • Provide through a Google form a way for outsiders to capture experience, issues, etc… relating to use cases • Arrive at a set of measures that will describe our success and the effectiveness of use cases • Do a self evaluation • Cycle through and refine Use Cases definitions

  22. Invitation to Contribute • The Process Being Followed per Use Case • Identify a use case that captures persistent access • Invite people to contribute and comment on use cases • Refine/Populate the use cases to support interoperability testing of components and services within the AI Pilot • Capture comments • Continue cycling through this process refining each iteration

  23. Invitation to contribute

  24. Contact Information • Getting to the Access WG Web page: • http://sites.google.com/site/geosspilot2 • Menu entry access-services-working-group • Subscribing to the Access WG Mailing List: • https://lists.opengeospatial.org/mailman/listinfo/aip_access • Access WG weekly telecons to discuss issues arising and new use cases that need to be addressed • Announcements through Access WG mailing list

  25. Thank you

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