Download - WMO Information System (WIS)
1World Meteorological Organization
WMO Information System (WIS)
Managing & MovingWeather, Water and Climate Information
in the 21st Century
WORLD METEOROLOGICAL ORGANIZATION
Weather –Climate - Water
ROC and RMDC Steering Group meetings, Vienna, Austria, 3-6 June 2008
José Arimatéa de Sousa BritoInformation and Telecommunication Services Division
Observing and Information Systems Department
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WorldMeteorological
Centres
WWW GTS
Regional/SpecializedMeteorological Centres
NationalMeteorological
Centres
Meteorological and R&DSatellite Operator Centres
Current situation: GTS
interconnects
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GTS provides:•Information collection and distribution
o Real-time push for WWW data & products(and some other programmes data)
•Information management
o Standard data formats
o Implicit metadata & catalogs
Current situation: GTSCurrent situation: GTS
For WWWFor WWW
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•Information exchange
o Multiplicity of procedures
o Real-time and non-real-time
o Very limited pull
•Information management
o Multiplicity of data formats
o Uncoordinated/lack of metadata & catalogs
o No discovery
Current situation:Current situation:GTSGTS and Other WMO Programmes systemsand Other WMO Programmes systems
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GAW World Data Centres
GCOS Data Centres
Global Run-off Data Centre
Global Precip. ClimatologyCentreIRI, Hadley Centre, and
other climate researchcentres; Universities;Regional Climate Centres(CIIFEN, etc.)
International Organizations(IAEA, CTBTO, UNEP, FAO.. )
CommercialService Providers
World Radiation Centre
Regional InstrumentCentres
WMO WorldData Centres
InternationalProjects(e.g. GMESHALO)
Real-time “push”On-demand “pull”
internet
DCPC
NC/DCPC
NCNC
NC/DCPC
NC
NC
NC
NC
NC
NC
GISC
GISCGISC
SatelliteTwo-Way Systems
SatelliteDissemination(IGDDS, RETIM,
etc)
NC
NC
DCPC
GISC GISC
DCPC
WISWIS
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IMPORTANT QUESTIONS
• What is the WMO Information System (WIS)?
–Why is it being developed?
–What services will it provide?
• What will the NMHS gain from WIS?
• What is the overall WIS plan?
• How far has its implementation progressed?
• What are the major challenges still to be met?
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WMO Information System (WIS)DESIGNING AND IMPLEMENTING WIS
• Overview– Background information
• Project plan– Objectives and vision– Scope of the project– Organizational structure
• Project implementation– User requirements– Technical specifications– WIS guidelines
• WIS critical issues– Engagement of Working Groups, Expert Teams, …
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WMO INFORMATION SYSTEM
Direction from WMO Congress (2003)•Develop:– Over-arching approach for solving data management
problems for all WMO and related internationalprogrammes
– A single, coordinated global infrastructure, theWMO Information System (WIS) for thecollection and sharing of information
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REASONS FOR WISREASONS FOR WIS
• Various WMO Programmes developinginformation systems independently
–Incompatibilities, inefficiencies, duplication ofeffort and higher overall costs
• Continued systems development in anuncoordinated manner would:
–Exacerbate these problems–Increase difficulty in sharing information
between programmes–Further isolate WMO Programmes from each
other and from wider environmental community
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Integrated approach for all WMO Programmes
•Routine collection and dissemination of time-criticaland operation-critical data and products:
o Real-time “push”through dedicated telecommunication•Data Discovery, Access and Retrieval service:
o “Pull”through the Internet (HTTP, FTP,…)•Timely delivery of data and products:
o Delayed mode “push”through dedicated telecommunicationmeans and public data networks, especially the Internet
•Unified procedureso More efficient data exchange
•Coordinated and standardized metadatao Interoperability between programmeso Improved data managemento ISO 191xxx series for geographic information
WIS Vision
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WIS brings new features and opportunities
•Common information exchange standards,functions and services for all WMOprogrammes
•Inter-disciplinary discovery, retrieval andexchange of information in real-time andnon-real time
•Inter-operability through on-line cataloguesusing metadata based on ISO 19100(geographic information standard)
•Industry standards and off-the-shelfhardware and software systems to ensurecost-effectiveness and compatibility
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WIS provide three types of services to meet thedifferent requirements:(1) Routine collection and dissemination service
for time-critical and operation-critical data andproducts:
Based on real-time “push” mechanism (incl. Multicast);implemented essentially through dedicated telecommunication meanswith guaranteed quality of service, e.g. leased circuits, dedicateddata communication network services and satellite-based data-distribution systems;(2) Data Discovery, Access and Retrieval service:
Based on request/reply “pull”mechanism with relevant datamanagement functions; implemented essentially through the Internet(HTTP, FTP,…);(3)Timely delivery service for data and products:
Based on delayed mode “push”mechanism; implemented through acombination of dedicated telecommunication means and of public datanetworks, especially the Internet.
WIS SERVICES
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Major Components and Services of WIS:Interoperability and WIS Networking
Dat
aan
dP
rodu
ctU
sers
Global InformationSystem Centres
(GISCs)
Data Collection orProduction Centres
(DCPCs)
NationalCentres(NCs)
SOA - Focus is on the interfaces
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Structure of WISFunctional centres interconnected by datacommunication networks:
•National Centres (NC)– Links national data providers and users to regional and global data
exchange nodes, and administrates access to WIS
•Data Collection and Production Centres (DCPC)– Provides for regional and international exchange of WMO programmes’
data and products– Supports data and information push and pull
•Global Information System Centres (GISC)– Provides for global exchange of data and products– Collects and provides metadata for all data and products– Supports data and information discovery and pull
WIS concerns only information exchange and data management functions
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WMO Information System (WIS)BASIC DOCUMENTS
•WIS PROJECT AND IMPLEMENTATION PLAN
•WIS COMPLIANCE SPECIFICATIONS OFGISC, DCPC AND NC
•WIS USER REQUIREMENTS
•WIS GUIDELINES
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WIS PROJECT ORGANISATIONAL CHART
CONGRESS
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WIS Project Gantt Chart
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IGDDS
WIS/GTS: for time and operation-critical data & productsWIS/IGDDS: for space-based data & productsWIS/DAR: data discovery, access and retrievalData push: routine distribution of data & productsData pull: access to and retrieval of data & products
Data pull
Data push
WIS DATA-COMMUNICATIONS IMPLEMENTATION(for weather, water, climate and related data and products)
Essentially throughtelecom. withguaranteed quality ofservice, e.g. leasedcircuits, dedicated datacom network services,sat.-based systems, ..
Essentially throughsatellite based datadistributionsystems, e.g. DVB-S
GTS
Essentially throughthe Internet(HTTP, FTP, VPN…)
DAR
WIS
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Exeter
SofiaMelbourne
Buenos Aires
TokyoBeijing
Nairobi
Washington
Network I
Jeddah
Prague
Toulouse
Dakar Algiers
Offenbach
Brasilia
CairoManaged
data communication network
New DelhiMoscow
Network II
IMPROVED MAIN TELECOMMUNICATION NETWORK(IMTN)
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Site D acts as a gatewayfor Site F
Site A acts as a gatewayfor Site G
DATA COMMUNICATION NETWORK
(Target: as big as possile)
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Interoperability enables the discovery,the retrieval and the usage of the dataIt needs the development and theimplementation of relevant Metadatastandards
Development of a WMO Metadata Profile ofthe ISO 191xx series for geographicinformation
•Step 1: development of the WMO MetadataCore Profile of ISO 19115 for data discovery
•Step 2: Use of the ISO 191xx series for theaccess and use of the data
WIS, a key issue: interoperabilityWIS, a key issue: interoperability
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WIScore
network
InternetDiscovery, Accessand Retrieval(DAR)
Connectivity of DAR services
DISCOVERY, ACCESS AND RETRIEVAL
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Table 1 Scope
1 Routine collection and automated dissemination of time-critical and operation-critical information(‘push’).
2 Timely delivery service for information (appropriate to requirements) including delayed mode data.3 Information subscription services (subscribe to ‘push’) by authorised users.4 Ad-hoc requests for information (‘pull’) by authorised users.5 Integration and management of duplicated files or messages (information entity) including version
control (i.e. corrections and duplicates) The blending of real time and delayed mode information ishandled in other processes of information custodians.
6 Integration of data collection and distribution systems either in place or under development within theWMO programmes including the satellite programme’s Integrated Global Satellite Data Distribution System (IGDDS) and the use of the internet via all programmes.
7 Access to WMO registries and catalogues, including a portal for metadata discovery (InformationDiscovery)
8 Discovery, Access and Retrieval Service (DAR) to information serving directly from GISCs of currentcontent (as distinct from only providing metadata)
9 Interoperability with other user communities including earth sciences and the various GEO societalbenefit areas (GEOSS).
10 Assurance processes for ensuring adherence to data and information usage policy.11 Identification and authorisation processes12 Network security13 Information security including exchange over open and closed networks. i.e. Ensure the quality of the
information is maintained while in the transit and communications components. e.g. quality of serviceaccording to GTS manual
14 Merit assessment of new and existing communication technologies (i.e. solution should be flexibleand scalable to allow for taking advantage of new technologies).
15 Information collection and distribution systems within Member states. Although internal collection anddistribution practices within countries are totally under the control of the Member state, these are apart of WIS. Also, WIS should be able to register national systems should members desireinternational access to them.
16 Quality and performance monitoring of collection and distribution services and systems17 Metadata profiles for describing information and information services.18 Management of metadata & effectiveness of metadata, system handling of metadata
Not in scope at this time.1 Who decides what information passes on WIS. This comes back to the information provider.2 User registration and shared user registers, virtual organisation issues.3 Information visualisation and integration. This is a value added service available through NC and
DCPC. Available and future API may enable users to achieve this function.4 Information subsection and creation of new products. Too hard at present and will come in later
development stages5 Quality control and assurance processes for data and products. These are being managed within
other stages in the information creation and collection at present, especially within the NC.Table 1 Scope
SCOPE OF WIS
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Assessment of Requirements(WIS Project Office –interim measure)
Review of Requirements(New ET on User Requirements - to be formed)
User Reqmts Doc, WIGOS Obs db + TBD db
Determine Optimal Way to Meet User RequirementsWG-PIW | ET-OI | ET-CTS
Consolidation of Views(New ET on User Requirements)
Consolidated and Endorsed User Requirements
Implementation of ServicesAddressing User Requirements
Member States (CIO)
Decisions on Implementation offormal and Ad Hoc Requests
Questionnaire Responses, Meeting Reports, interviews, etc
Decisions on WIS Components
Designation of GISCs and DCPCs
EC, TCs, RAs, Member States
RequirementsAssessment Phase
RRR Phase
Processfor
Establishing,M
aintainingand
Implem
entingUser
Requirem
ents
WIS DCPC and GISC NominationsAd Hoc Requests for WIS Services
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Integration Definition for Function Modelling (IDEF0)
FunctionInput Output
Controlsource datawhich is
transformed bythe Function
the result of thetransformation
carried out by theFunction
identifies theresources/facilities that areused by the Function (e.g.
humans, computers...)
defines how theFunction carries outthe transformation
Mechanism
Functions transformthe Inputs into
Outputs in accordancewith the Controls and
making use of theMechanisms
Functions transformthe Inputs into
Outputs in accordancewith the Controls and
making use of theMechanisms
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WIS CONTEXT DIAGRAM AND SOME WIS FUNCTIONS
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InterfaceT
echS
pecs
Reporting of Quality of ServiceWIS-TechSpec-15
Consolidated View of Distributed Dissemination Metadata CataloguesWIS-TechSpec-14
Maintenance of Dissemination MetadataWIS-TechSpec-13
Downloading Files via Other MethodsWIS-TechSpec-12
Downloading Files via Non-dedicated NetworksWIS-TechSpec-11
Downloading Files via Dedicated NetworksWIS-TechSpec-10
Consolidated View of Distributed DAR Metadata CataloguesWIS-TechSpec-9
DAR Catalogue Search and RetrievalWIS-TechSpec-8
Authorization of a User RoleWIS-TechSpec-7
Authentication of a UserWIS-TechSpec-6
Consolidated View of Distributed Identification and Role InformationWIS-TechSpec-5
Maintenance of User Identification and Role InformationWIS-TechSpec-4
Centralization of Globally Distributed DataWIS-TechSpec-3
Uploading of Data and ProductsWIS-TechSpec-2
Uploading of Metadata for Data and ProductsWIS-TechSpec-1
GISCDCPCNC
Required for:Interface Technical Specification NameInterface Technical SpecificationIdentifier
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For updating the identification and role information concerning candidate or current users of WIS, WISCentres should support two kinds of maintenance facilities: a file upload facility for "batch" updating(add, replace, or delete identification and role records treated as separate files); and an online form forchanging individual identification and role entries (add, change, or delete of elements in a record as wellas whole records).
Notes
use ISO standards for references to specific places on the Earth; harmonize data formats, transmission,archiving and distribution across disciplines; [each NC] authorizes its national users to access WIS;[each DCPC] supports access to data and products via Internet request/reply; [each DCPC] implementsbackup and recovery of essential services; use dedicated telecommunications and public Internet fortimely delivery; identify and use a variety of data types across WMO programmesWIS Technical Specification Appendix C Requirements:C.5.20, C.1.11, C.5.05, C.5.17, C.4.05, C.3.05, C.3.07, C.1.14, C.1.19, C.1.20, C.1.21, C.1.10, C.1.18a
WIS Requirements(in addition to requirementsapplicable toall interfaces)
WIS Technical Specification Appendix B Use Cases:B.5, Maintain Identification and Role Information for WIS Users
Use Cases
WIS Technical Specification Appendix A, Diagram 2, Process A2:Assign User RoleInputs: User RequestsOutputs: User Requests with Assigned RoleWIS Technical Specification Appendix A, Diagram 2, Process A4:Authorise Access to Information by UsersInputs: Requests for InformationOutputs: Information Access Authorizations
WIS Data Flow Diagrams
the timeliness of changes to user identification and role information is application-specific and subject toNC or DCPC procedures
Performance Metricsidentification and
role information
public or private Internet using TCP/IP with encryption;typically HTTP with GET or POST methods, and may include SOAP
Network Transports andSupporting Services
non-dedicated shared network may be used, provided there is privacy protection for identified individualsas required by national laws
Service Level Required
terminal-host; store-and-forward or file transfer (e.g., FTP, HTTP)client-server; request-response (e.g., HTTP with CGI Web form)
Communication Types
standards for content and communications are TBD by host of identification and role informationdatabase
Applicable Standards
WIS-TechSpec-4, Maintenance of User Identification and Role Information
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Eliot ChristianLast Updated By
30 Oct 2007Last Updated
At this point in WIS system design, mechanisms have not been decided for handling identificationand role information as needed across WIS centres.
Notes and Issues
Identification and role information about candidate or current users of WIS are to be recordedthrough facilities controlled by WIS Centres. Typically, two kinds of facilities should besupported. One is a file upload facility for "batch" updating (add, replace, or delete theidentification and role records as separate files). The other is an online form for changingidentification and role records (add, change, or delete elements in a record as well as wholerecords). Administrators of authentication and authorization at WIS Centres share theupdated identification and role information as a resource available as needed across WISCentres.
Normal Flow
WIS Centres collectively have the ability to authenticate each user of WIS and authorize him toperform all of the functions appropriate to his role, and only those functions appropriate tohis role
Post-Conditions
(1) Administrators have agreed authentication policies delineating the credentials required toestablish identity of a WIS user
(2) Administrators have agreed authorization policies delineating which roles are authorized toperform each WIS action
(3) Administrators have mechanisms to create and maintain identification information needed forauthentication of users of WIS
(4) Administrators have mechanisms to create and maintain role information needed forauthorization of authenticated users of WIS
Pre-Conditions
Users of WIS (internal and external)Administrators of authentication and authorization at WIS Centres
Actors
Internal and external users of WIS are able to be identified as needed for their authentication, andtheir role information is maintained as needed for their authorizations to perform specificfunctions
Use Case Goal
Use Case B.5, Maintain Identification and Role Information for WIS Users
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Key Future Milestones
•Consolidate plans on development, governanceand implementation of WIS: 2007-2008
•Develop WIS regulatory documentation andguidance material for implementation, includingspecifications for the GISC interfaces and aunified user interface: 2007-2008
•Develop scheme and practices for security,authentication and authorization procedures forWIS services : 2007-2008
•Implementation of first operational GISC: 2009•Implementation of other operational GISCs: 2009
- 2011•Implementation of DCPCs, i.e. WIS interfaces at
WMO programmes’centres: 2009-2011
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European Virtual GISC Project
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•Data exchange/synchronization between GISCs
•Metadata exchange/synchronization
•GISC performance standards, monitoring,storage
•Two (2) minutes for warning distribution•Ten (10) minutes for other info•Holding 24 hours of information
•Manual on WIS, equivalent of Manual on theGTS.
•Defining steps to be taken to evolve the GTStowards WIS
CRITICAL ISSUES FOR WIS
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EVOLUTION OF THE GTS TOWARDS WIS
CHALLENGES
•WIS has to perform better than the current GTS in any stage
•Use of technology available now
•Take into account current evolution of Regional Networks
•WIS to be cost-effective in the long run