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WMO

World Meteorological Organization (WMO) Observing and Information Systems Department WMO Information System (WIS). WMO. The WMO Information System (WIS). Presented by Timo Pröscholdt <tproescholdt@wmo.int> WIS Professional Officer for WIS. WMO: Observations, Models, Data and Information.

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WMO

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  1. World Meteorological Organization (WMO)Observing and Information Systems DepartmentWMO Information System (WIS) WMO The WMO Information System (WIS) Presented by Timo Pröscholdt <tproescholdt@wmo.int>WIS Professional Officer for WIS

  2. WMO: Observations, Models, Data and Information WIS Overview

  3. Cloud I Tokyo Beijing Washington Melbourne Sofia Moscow New Delhi Prague Brasilia Exeter Buenos Aires Jeddah Offenbach Cloud II Nairobi Toulouse Cairo Dakar Algiers Global Telecommunication System (GTS) WIS Overview

  4. KEY: NC = National Centres GISC = Global Information System Centres DCPC = Data Collection or Production Centres Real-time "push" On-demand "pull" Types of Centres: GISCs, DCPCs, and NCs • GAW World Data Centres • GCOS Data Centres • Global Run-off Data Centre • Global Precipitation Climatology Centre International Organizations (IAEA, CTBTO, UNEP, FAO.. ) • World Radiation Centre • Regional Instrument Centres Internet DCPC • IRI and other climate research institutes • Universities • Regional Climate Centres NC Internet NC Area Meteorological Data Communication Networks (AMDCNs) NC/DCPC NC/DCPC GISC NC Commercial Service Providers NC WIS core network GISC GISC NC NC DCPC GISC GISC DCPC Satellite DisseminationIGDDS, EUMETSAT, etc. WMO World DataCentres Internation projects (eg GMES HALO) WMO World DataCentres Internation projects (eg GMES HALO) SatelliteTwo-Way System Internet Internet NC NC NC NC WIS Overview

  5. Status of WIS • 3 GISCs and 4 DCPCs have been audited • DWD (GISC) • JMA (GISC) • CMA (GISC) • Eumetsat (DCPC) • ECMWF (DCPC) • Arctic Datacenter (DCPC) • INMET Météo France, UK, NOAA will come online this year WIS Overview

  6. Some GISCs / Japanhttp://www.wis-jma.go.jp/cms/ WIS Overview

  7. Some GISCs / DWDhttp://gisc.dwd.de WIS Overview

  8. WIS metadata • WIS metadata is ISO19139 based • Data owners create and maintain metadata • WMO core profile of ISO 19139 mandatory for WMO community internal metadata • Have concluded that ISO19139 requires ISO19136, thus enfore gml 3.2.1 compat. • Use the schema at http://wis.wmo.int/2011/schemata/iso19139_2007/schema.xsd WIS Overview

  9. WIS and WIGOS • WIGOS is at an early development stage • WIGOS will use the WIS infrastructure for data exchange and metadata => Compatibility with WIS crucial for future WIGOS activities WIS Overview

  10. WIS internal metadata synchronization • NCs/DCPCs upload metadata to affiliated GISC • GISCs make metadata of their affiliated centres available in OAI-PMH set • All GISCs harvest from all other GISCs its part of the catalogue WIS Overview

  11. metadata synchronization between WIS and GEOSS • The whole WIS catalogue is available at each GISC • Can be harvested regularly with OAI-PMH • But what about validation? GEOSS clearinghouse OAI harveesting GISC Offenbach GISC Tokyo Other GISC WIS Overview

  12. Problems & Issues Huge catalogue (initially 100k records, but can grow to >1m) leads to potentially prohibitively big search results • Large search results need to be visualized appropiately • Browsing can help, but needs automatic partitioning Is some sort of clustering the answer? Different communities have different search behaviour • Experts search for « precipitation », laymen for « rain » • Ontologies might help, but • Impossible to agree one ontology • => intelligent search algorithms needed WIS Overview

  13. Questions About ISO19139 - which ISO19139 do you use? - how do you deal with situations where different schemata are used? About OAI-PMH - do you have experiences with large scale OAI-PMH systems - might loose updates due to « delta » syncing WIS Overview

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