GEOSS Common Infrastructure GCI The GEOSS Common Infrastructure

GEOSS Common Infrastructure (GCI) The GEOSS Common Infrastructure allows Earth Observations users to search, access and use the data, information, tools and services available through GEOSS. It consists of the following main elements: • GEO Web Portal (GWP): web interface to search and access GEOSS • Component and Service Registry (CSR): contains information on all resources provided as contribution to GEOSS by Member States and Participating Organizations • Discovery and Access Broker (DAB): allows discovery and brokered access via the GWP to heterogeneous resources from different catalogues • Clearinghouse (CH): connects to GEOSS resources registered in the CSR and harvests remote catalogs • Standards and Interoperability Registry (SIR): contains information on Standards and interoperability arrangements implemented in GEO • Best Practices Wiki (BPW): contains information on EO best practices • User Requirement Registry (URR): contains data-oriented user requirements • Semantic Registry (SR): contains semantic information to support user search Interfacing with: • EO Inventory Clients (CWIC, GENESI-DEC, etc. ) • Pledged catalogs of descriptive metadata • Pledged data download and service endpoints

GEOSS Current Architecture Access GEOSS User GEO Web Portal GEOSS Common Infrastructure GEOSS Registries: • Standards & Interoperability • User Requirements • Best Practices Wiki • Semantic Discovery and Access Broker* (DAB) Clearinghouse (Catalog) Register Component & Service Registry (CSR) Resources Providers harvest Centralized EO Inventory Clients GENESI*, CWIC*, Fed. EO* metadata links to real-time search Member and PO Resources Agency Services and SW Applications: Web services, Applications. Community Official Data Catalogs

GEOSS Infrastructure interactions shares links to Best Practices Wiki GEO Web Portal searches Semantic Registry augments query metadat a referenc es Service Monitoring monitors presents results Discovery and Access Broker (DAB) informs results regarding quality of service reference s standards in searche s catalogs Clearinghouse accesse s Services: Catalog, catalogs index metadata for Access, Processing is a type of Search & access to Standards and Interoperability Registry CWIC NSIDC GENESI-DEC, HMA …. . GEOSS Registration Service (CSR) harves ts catalo gs register with inventor y of EO Data User Requirements Registry act on API UI Software Applications: Web, PC, Mobile

GCI Usability Issues • Comprehensive content: Cannot document the percentage of coverage within GEOSS. Always need more resources to be committed • Registered services: All catalogs should be registered into CSR as a base to be used elsewhere (by DAB) • Service quality: Service Status Checker must be integrated to probe Web Services and links regularly • Consistency of inventory search: Multiple UI are presented to user for deep inventory search; not all inventories are searchable via GWP/DAB • Search behavior: Search must return what is expected, ranking of results must be meaningful • Helping users use data: Helper applications should be linked to data and services!

Challenges • How should license and user management be enabled or coordinated in the GCI? • What types of semantic information should be managed in GCI? Where? • Should standard Community portals be established for every SBA to interact with the GCI and “Best Of”? • How would mobile clients and enabler applications interact with the other GCI components? • How would content quality information be tracked and made available through the GCI?