1. ADC Portal & Clearinghouse GEO Architecture and Data Committee 2-3 March 2006 George Percivall OGC Chief Architect percivall@opengeospatial.org

2. Helping the World to Communicate Geographically ADC Portal & Clearinghouse GEOSS 10-Year Implementation Plan –Draw on existing Spatial Data Infrastructure (SDI) components –publicly accessible, network-distributed clearinghouse maintained collectively under GEOSS. catalogue subject to GEOSS interoperability specifications, including the standard search service and geospatial services. –GEOSS will establish international information sharing and dissemination, including, but not limited to, Internet-based services. Approach, e.g., 10 year Reference Document –GEOSS catalogues form a ‘clearinghouse’ network –Information Search and Retrieval Protocol Abstract specification ISO 23950 –Metadata for datasets, services, coordinate reference systems, etc. –Network of service networks –GEO Task AR-06-05: Initiate development of a publicly accessible, network- distributed clearinghouse…

3. Helping the World to Communicate Geographically GEOSS 10-Year Implementation Plan GEO Document 1000 February 2005 To enable implementation of the GEOSS architecture, GEOSS will draw on existing Spatial Data Infrastructure (SDI) components as institutional and technical precedents in areas such as geodetic reference frames, common geographic data, and standard protocols. GEO Members and Participating Organizations and their contributions will be catalogued in a publicly accessible, network-distributed clearinghouse maintained collectively under GEOSS. The catalogue will itself be subject to GEOSS interoperability specifications, including the standard search service and geospatial services. The implementation of GEOSS will establish, within 6 years, international information sharing and dissemination drawing on existing capabilities through appropriate technologies, including, but not limited to, Internet-based services.

4. Helping the World to Communicate Geographically GEOSS 10-Year Implementation Plan: Reference Document GEO Document 1000R, February 2005 Users searching GEOSS catalogues will find descriptions…leading directly to whatever information is needed to access the specific data or service in a harmonized way, independent of the specific provider. The interoperable GEOSS catalogues form the foundation of a more general ‘clearinghouse’. A key operational feature of the GSDI is its Clearinghouse network, which now includes over 400 catalogues in which comprehensive metadata about available geospatial data is maintained. ISO 23950 Protocol for Information Search and Retrieval –Clearinghouse catalogues supported across the Global Spatial Data Infrastructure implemented in more than 50 countries