Post on 13-Jan-2016
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Status ReportWIS – WMO Information System
Chris Little, Met Office, Co-chair OGC Met. & Oceanography Domain WG
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New WMO Information System
WIS Background SummaryWMO Telecoms, GTS, is reliable, inflexible, ‘push’ only
Still many point-to-point links
Managed Network in Europe with two roles:– Areal Meteorological Data Comms Network AMDCN– Global Core/Main Trunk Network MTN
Some of Eastern Europe/Caucasus not yet joined
Some global centres still joining MTN– Brasil – consultant helping with telecom procurement– Canada – lawyers reading the agreement– South Africa - connected 2011-11-24, last week!
Other regions’ AMDCNs not yet happened.
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WIS Components - 1
1. Global Information System Centre (GISC)Global Catalogue + 24 hour operational Global Data Cache
Exchanges information & synchronises with other GISCs
Receives information from NCs and DCPCs
Ensures around-the-clock, reliable and secure operations
2. National Centre (NC) maybe >1 per maybe >1 per country
Country collected/generated information sent to GISC/DCPC
Portal for national users & administrates their access to WIS
Generate standardised metadata as well as data
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3. Data Collection & Production Centre (DCPC)
Neither GISC or NC: information production facility, regional or global
Generates, maintains and makes accessible standardized metadata catalogues of its data holdings through GISCs
Supports information “Push” and ”Pull” mechanisms
May facilitate access/exchange from/to NCs and GISCs
Replaces/enhances Regional Telecom Hubs RTHs
Replaces Regional Specialised Met. Centres RSMCs
WIS Components - 2
WIS Interoperability StandardsWMO Data FormatsWMO Telecoms protocols + WMO Extranet + ‘Push’WMO processes WMO Data Formats (though format neutral)Internet + WMO Extranet Global Catalogues
– ISO19115+ISO19139+WMO profile V1.2 +ISO19119– ISO23950+SRU1.3 (+CSW?)– OAI-PMH
Global Cache (Bit Torrent to be piloted & proposed)‘Push & Pull’ Dissemination Ad Hoc & Subscription
(PubSub?)
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WIS live catalogue demo! WMO Congress Geneva May 2011
Scenario: How WIS can help with a (imaginary) food security analysis
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5 GISCs endorsed by WMO4 Technology solutions:• CMA China Meteorological Administration (own software)• DWD Deutscher Wetter Dienst (IBL Moving Weather)• JMA Japan Meteorological Agency (own software, RSS)• Météo-France (OpenWIS)• UK Met Office (OpenWIS)
Interoperability of catalogues, and harvesting of information demonstrated between all nodes, plus Brazil, Iran, NCAR
Harvesting protocol agreed by WMO: OAI-PMH: • Geonetwork (Lucene & Postgres)• Java OAI API (Oracle)
37 DCPCs endorsed by WMO
CMA China Meteorological Administration: 1
HKO Hong Kong, China: 1
DWD Deutscher Wetter Dienst: 10
JMA Japan Meteorological Agency: 8
Météo-France: 6
Norway: 1
UK Met Office: 8
ECWMF: 1
EUMETSAT: 1
http://www.wmo.int/pages/prog/www/WIS/centres/index_en.php
Now operational
Now operational
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Operational
Operational
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Demo links: GISCs, DCPCsUK Met Office user portal
http://wis.metoffice.gov.uk/openwis-user-portal/srv/en/main.home Search and find, then self registration for delivery
Météo-France user portal http://wisp.meteo.fr:8080/openwis-user-portal/srv/en/main.home
DWD Deutscher Wetter Dienst http://gisc.dwd.de
CMA China Meteorological Administration 国家气象信息中心简介 http://wisportal.cma.gov.cn/
JMA Japan Meteorological Agency http://www.wis-jma.go.jp/cms/
EUMETSAT EO Portal http://www.eumetsat.int/Home/Main/DataProducts/ProductNavigator/index.htm
Norway IPYhttp://arcticdata.met.no/
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WIS Technologies - 1
Global Catalogue• Metadata: ISO 19115 + 19139
– WMO Profile 1.2– Services could be ISO19119
• Search with ISO23950 + SRU (+ CSW?)• Harvesting: OAI-PMH• Prototype: Geonetwork• Catalogue access for all• Default access policy, others supported
• No more than 24 hours out of date
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WIS Technologies - 2Subscriptions• Subscriptions & ad-hoc retrievals for authenticated
and authorised users including self registered• Using OpenAM/SAML2 (was OpenSSO)• Need to agree subscription & backup standard
(OGC PubSub?)
Cache• 24 hours worth of all ‘Essential’, critical, data• Need to agree Content Distribution standard
(Vuze + BitTorrent?)• Stringent global performance standards (2 min
latency end-to-end maximum for Warnings)
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OpenWIS demo (possibly)
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Questions & Answers