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Architecture Task AR-06-05Architecture Task AR-06-05“Clearinghouse”“Clearinghouse”

Status Status

Presented to the July 20-21, 2006 Meeting of the GEO Architecture and Data Committee

George Percivall, Chuck Heazel, Sean Forde; OGC

gpercivall@opengeospatial.org

AR-06-05 Point of Contact

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AR-06-05 Task SheetAR-06-05 Task Sheet

• Task Title: Initiate development of a publicly accessible, network-distributed clearinghouse, subject to GEOSS interoperability specifications to date, and including an inventory of existing data, metadata, and pre defined common products.

• Description of the Work to be Performed1. Develop content and presentation criteria for permission to use “GEO

Clearinghouse” brand.

2. Request offers from among GEO Members and Participating organizations to designate network nodes of the GEO Clearinghouse, linked via GEOSS interoperability standards and containing existing data, metadata, and pre-defined common products.

3. Test and demonstrate interoperability via Web portals or other verification tools.

4. Include access to GEO Clearinghouse as a key function of the GEO Home Web portal managed by GEOSEC.

Highest Priority per Task Team

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Task Team proposes two-phase approachTask Team proposes two-phase approach

• Request for Information (RFI) for Proof of Concept Phase– Include a candidate architecture for distributed catalog network– Include criteria for permission to use “GEO Clearinghouse” brand.– Request comments on architecture– Call for components for Proof of Concept phase– RFI issued by December 2006

• Request for Proposals (RFP) for Operational Phase– RFP to include target architecture for distributed catalog network– Request offers from among GEO Members and Participating

organizations to designate network nodes of the GEO Clearinghouse,

– Request offers to perform integration of nodes - significant effort– RFP issued in 2007

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AR-06-05 - ConceptsAR-06-05 - Concepts

• Distributed Architecture - Network of Catalog Services– Support GEO Home Web portal – what does this require of the catalog – Multiple portals access Clearinghouse via interoperability specifications– Multiple catalog nodes containing metadata for registered resources– GSDI clearinghouse as example

• Resources to be registered– Highest priority: metadata for: maps, vector and raster types– Will need to describe services that provide access to the data– Coordinate with Registry discussions

• Interoperability Arrangements - use existing standards– GSDI clearinghouse example of ISO 23950 (ANSI Z39.50)– OGC Catalog Services Specification

• Bindings for Z39.50 and Web Services (CSW)

– ISO TC 211 Metadata standards; ISO 19115, ISO 19139

• Compelling need for the metadata discovered in catalog to link to on-line web services, e.g., GEOSS Web Services (Network)

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GEOSS Web Services (Network)GEOSS Web Services (Network)

• OGC comment on Task November 2005, briefed to ADC March 2006:– “Beginning with a metadata clearinghouse, develop a GEOSS Services

Network (GSN) as a persistent network of a publicly accessible services for demonstration and research regarding interoperability arrangements in GEOSS.”

• Status - “GSN” successfully demonstrated – Demonstrations developed as part of GEOSS User Workshops

– Open Standards for Catalog, Web Mapping, Web Service access to data.

– Consider network to become a parallel component of the Proof of Concept

• Name change from GSN to GWS– Avoid conflict with Global Seismographic Network (GSN)

– New name: GEOSS Web Services (GWS) - replaces GEOSS Services Network

• Beijing Wind Energy Demo highlights

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Demo in Demo in Beijing GEOSS WorkshopBeijing GEOSS Workshop

Jinsoo You & Mike Jackson

Centre for Geospatial Science

University of Nottingham

jinsoo.you@nottingham.ac.uk

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Demo in Beijing GEOSS WorkshopDemo in Beijing GEOSS Workshop

Demo Theme: “Wind Farm Siting” in Hainan Island

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Demo Theme: “Wind Farm Siting”Demo Theme: “Wind Farm Siting”

? m

Offshore

Wind

Farm E

xample

• Q: Where are the suitable wind farm sites?• Q: Where are stronger winds?• Q: What is the acceptable hub height?

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Common Wind Farm Siting CriteriaCommon Wind Farm Siting Criteria

• Landscape factors• Proximity to and impact upon residential buildings• Biodiversity impact• Potential highways constraints and access issues• Wind speeds at Hub Heights (about 50m above ground)

(suitable wind speeds are between 5 and 30 m/s)• Land ownership and constraints• Topography• Archaeology• Hydrology• Connection to the electricity grid

Prospecting

Validation

Micrositing

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List of Participating OrganizationsList of Participating Organizations (alphabetic order)(alphabetic order)

• CGS, University of Nottingham: Technical lead for demonstrator build• CIESIN, Columbia University: WMS, WCS and WFS for various data layers• Civil Engineering, University of Nottingham: Expertise on wind modeling• Geomatic Engineering, University College London: WMS and WCS for various data layers• IEEE and Workshop Organizers: Workshop coordination & high speed internet arrangements• IMAA/CNR (University of Florence): WCS and CPS for above ground wind speed data• Ionic Software: OGC compliant products and technical supports• ITT (formerly RSI): OGC compliant products and technical supports, and WCS and WMS• LAITS, George Mason University: WMS, WCS and WRS for various data layers• NASA: Earth-Sun System Gateway (ESG) catalog service and web mapping client• NOAA/NCDC, Unidata/UCAR, and Washington University: WCS and CPS for Global Wind Data

(1 degree global wind magnitude and wind vector data)• NRCan/GeoConnections and Environment Canada: WMS for analyzed mesoscale wind atlas• OGC: Coordination with GEOSS and of demonstrator program• RISO National Laboratory: Processed wind speed data based on Envisat images, and expertise

on wind farm siting analyses• Sun Yat-Sen University: Provided 10m/40m above ground wind speed data

And, there are many other participants who commented and supported the demonstrator development through the GEOSS Service Network (GSN) and OGC/GSN Telecons.

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OGC Architecture for GEOSS demoOGC Architecture for GEOSS demo

WCS

WFS

WMS

WCS

WFS

VCG

CPS

*** High Bandwidth Network (1 Mbit/sec) will be used at the demo.

Web Browser using VCGWMS

OWS Client not using VCG

WMS = Web Map ServiceWCS = Web Coverage ServiceWFS = Web Feature ServiceCSW = Catalog Service – WebWRS = Web Registry ServiceCPS = Coverage Portrayal ServiceVCG = Viewer Client Generator

WRS(CSW)

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GEOSS Beijing Workshop: MovieGEOSS Beijing Workshop: Movie

http://geoapp2.nottingham.ac.uk:8080/GEOSS_Beijing_Demo-2006(flash)/GEOSS_Beijing_Demo-2006(flash).html

http://geoapp2.nottingham.ac.uk:8080/GEOSS_Beijing_Demo-2006(flash)/GEOSS_Beijing_Demo-2006(flash).zip

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Starting point for expert of Demo in FlashStarting point for expert of Demo in Flash

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Thank youThank you

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Reference Architecture Service DistributionReference Architecture Service Distribution

InternetInternetPortrayalServices

PortrayalServices

PortrayalServices

Maps Styling Coverages Map Context

DataServices

DataServices

DataServices

Features Gazetteer Coverages Symbology Mgmt

CatalogServicesCatalog

ServicesCatalog

Services

Data Discovery Service Discovery Catalog Update Query Languages

PortalServices

PortalServices

Viewer Clients Discovery Clients Management Clients Access Control Exposed Services

Geospatial Portal

https://portal.opengeospatial.org/files/?artifact_id=6669