Transcript WORLD METEOROLOGICAL ORGANIZATION Weather – Climate - Water WMO Information System (WIS) Managing & Moving Weather, Water and Climate Information in the 21st Century José Arimatéa.

WORLD METEOROLOGICAL ORGANIZATION
Weather – Climate - Water
WMO Information System (WIS)
Managing & Moving
Weather, Water and Climate Information
in the 21st Century
José Arimatéa de Sousa Brito
Information and Telecommunication Services Division
Observing and Information Systems Department
World Meteorological Organization
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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 (RRR)
– Technical specifications
– Governance procedures
– WIS guidelines (WIS Manual)
•
ET-CTS critical issues
– Engagement of ET-CTS
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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
Direction from WMO Congress (2003)
• Develop:
–
–
Over-arching approach for solving data management
problems for all WMO and related international
programmes
A single, coordinated global infrastructure, the
WMO Information System (WIS) for the
collection and sharing of information
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REASONS FOR WIS
• Various WMO Programmes developing
information systems independently
– Incompatibilities, inefficiencies, duplication of
effort and higher overall costs
• Continued systems development in an
uncoordinated 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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Current situation: GTS
For WWW
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
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Current situation:
GTS and Other WMO Programmes systems
• 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
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Current situation: GTS
WWW GTS
Regional/Specialized
Meteorological Centres
Meteorological and R&D
Satellite Operator Centres
interconnects
National
Meteorological
Centres
World
Meteorological
Centres
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WIS Vision
Integrated approach for all WMO Programmes
• Routine collection and dissemination of time-critical
and 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 telecommunication
means and public data networks, especially the Internet
• Unified procedures
o More efficient data exchange
• Coordinated and standardized metadata
o Interoperability between programmes
o Improved data management
o ISO 191xxx series for geographic information
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WIS brings new features and opportunities
• Common information exchange standards,
functions
and services for all WMO
programmes
• Inter-disciplinary discovery, retrieval and
exchange of information in real-time and
non-real time
• Inter-operability through on-line catalogues
using metadata based on ISO 19100
(geographic information standard)
• Industry standards and off-the-shelf
hardware and software systems to ensure
cost-effectiveness and compatibility
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WIS
World Radiation Centre
International Organizations
(IAEA, CTBTO, UNEP, FAO.. )
Regional Instrument
Centres
IRI, Hadley Centre, and
other climate research
centres; Universities;
Regional Climate Centres
(CIIFEN, etc.)
GAW World Data Centres
GCOS Data Centres
Global Run-off Data Centre
DCPC
NC
NC
Global Precip. Climatology
Centre
NC/
DCPC
NC/
DCPC
Commercial
Service Providers
NC
NC
GISC
NC
GISC
GISC
International
Projects
(e.g. GMES
HALO)
NC
DCPC
NC
DCPC
GISC
GISC
Satellite
Two-Way Systems
Satellite
Dissemination
(IGDDS, RETIM,
etc)
NC
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WMO World
Data Centres
NC
NC
Real-time “push”
On-demand “pull”
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WIS DATA-COMMUNICATIONS IMPLEMENTATION
(for weather, water, climate and related data and products)
DAR
Essentially through
the Internet
(HTTP, FTP, VPN…)
WIS
Essentially through
telecom. with
guaranteed quality of
GTS service, e.g. leased
circuits, dedicated data
com network services,
sat.-based systems, ..
Data pull
Essentially through
satellite based data IGDDS
distribution
systems, e.g. DVB-S
Data push
WIS/GTS: for time and operation-critical data & products
WIS/IGDDS: for space-based data & products
WIS/DAR: data discovery, access and retrieval
Data push: routine distribution of data & products
Data pull: access to and retrieval of data &World
products
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Questionnaire Responses, Meeting Reports, interviews, etc
Process for Establishing, Maintaining and Implementing User Requirements
Requirements
Assessment Phase
Assessment of Requirements
(WIS Project Office – interim measure)
User Reqmts Doc, WIGOS Obs db + TBD db
Review of Requirements
(New ET on User Requirements - to be formed)
RRR Phase
Consolidated and Endorsed User Requirements
Determine Optimal Way to Meet User Requirements
WG-PIW | ET-OI | ET-CTS
Consolidation of Views
(New ET on User Requirements)
Ad Hoc Requests for WIS Services
WIS DCPC and GISC Nominations
Implementation of Services
Addressing User Requirements
Designation of GISCs and DCPCs
EC, TCs, RAs, Member States
Member States (CIO)
Decisions on Implementation of
formal and Ad Hoc Requests
Decisions on WIS Components
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WIS, a key issue: interoperability
Interoperability enables the discovery,
the retrieval and the usage of the data
It needs the development and the
implementation of relevant Metadata
standards
Development of a WMO Metadata Profile of
the ISO 191xx series for geographic
information
• Step 1: development of the WMO Metadata
Core Profile of ISO 19115 for data discovery
•Step 2: Use of the ISO 191xx series for the
access and use of the data
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European Virtual GISC Project
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National
Centres
(NCs)
Global Information
System Centres
(GISCs)
Data Collection or
Production Centres
(DCPCs)
Data and Product Users
Major Components and Services of WIS:
Interoperability and WIS Networking
SOA - Focus is on the interfaces
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WIS PROJECT ORGANISATIONAL CHART
CONGRESS
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Integration Definition for Function Modelling (IDEF0)
defines how the
Function carries out
the transformation
source data
which is
transformed by
the Function
Input
Functions transform
the Inputs into Outputs
in accordance with the
Controls and making
use of the Mechanisms
Control
Function
the result of the
transformation
carried out by the
Function
Output
Mechanism
identifies the
resources/facilities that are
used by the Function (e.g.
humans, computers...)
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WIS CONTEXT DIAGRAM AND SOME WIS FUNCTIONS
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Interface Technical Specification
Identifier
Interface Technical Specification Name
WIS-TechSpec-1
Required for:
Interface Tech Specs
NC
DCPC
GISC
Uploading of Metadata for Data and Products
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WIS-TechSpec-2
Uploading of Data and Products
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WIS-TechSpec-3
Centralization of Globally Distributed Data
WIS-TechSpec-4
Maintenance of User Identification and Role Information
WIS-TechSpec-5
Consolidated View of Distributed Identification and Role Information
WIS-TechSpec-6
Authentication of a User
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WIS-TechSpec-7
Authorization of a User Role
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WIS-TechSpec-8
DAR Catalogue Search and Retrieval
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WIS-TechSpec-9
Consolidated View of Distributed DAR Metadata Catalogues
WIS-TechSpec-10
Downloading Files via Dedicated Networks
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WIS-TechSpec-11
Downloading Files via Non-dedicated Networks
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WIS-TechSpec-12
Downloading Files via Other Methods
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WIS-TechSpec-13
Maintenance of Dissemination Metadata
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WIS-TechSpec-14
Consolidated View of Distributed Dissemination Metadata Catalogues
WIS-TechSpec-15
Reporting of Quality of Service
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WIS Tech Spec 8 – DAR
Catalogue search & retrieval
Applicable Standards
ISO 23950 Information Search and Retrieval Protocol [ISO-23950]
including GEO Profile and SRU (Search and Retrieve via URL) Profile
WMO Core Profile of the ISO Metadata Standard [IPET-MI(07)]
Communication
Types
client-server; request-response
Service Level
Required
non-dedicated shared network
Network Transports
and Supporting
Services
public or private Internet using TCP/IP which may include encryption; typically
HTTP with GET or POST methods, and may include SOAP
Performance Metrics
Response Time
Search Request Rate
Concurrency
maximum: 2 seconds per request
minimum: 40 keyword and bounding box searches per second
minimum: 20 active sessions
WIS Data Flow
Diagram -Process,
Input, Output
WIS Technical Specification Appendix A, Diagram 2, Process A3:
Maintain and Expose Catalogue of Services and Information
Input: Information Search Request
Output: Information Search Result
Applicable Use Cases
WIS Technical Specification Appendix B, Use Case:
B.6, Discover Data or Products
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WIS Tech Spec 8 – DAR
Catalogue search & retrieval
WIS Requirements
(in addition to
requirements
applicable to
all interfaces)
provide metadata catalogue across all GISCs of data, products, and services;
assure catalogue interoperability using ISO 23950 search and geospatial
services; catalogue WIS contributions in GEOSS Clearinghouse; use ISO
19115 and the WMO core metadata profile; standardize practices for
electronic archival of metadata; provide metadata with quality indications to
enable search, retrieval, and archiving; make WMO Resolution 40 data
available through GEOSS interoperable arrangements; use ISO standards for
references to specific places on the Earth; harmonize data formats,
transmission, archiving and distribution across disciplines; draw on existing
Spatial Data Infrastructure (SDI) components as institutional and technical
precedents; [each DCPC] supports access to data and products via Internet
request/reply; [each DCPC] implements backup and recovery of essential
services; [each GISC] provides coordination and mutual backup with other
GISCs; use public Internet for Data Discovery, Access and Retrieva; support
rapid access and integration of real-time and non real-time (archive) data
sets; identify and use a variety of data types across WMO programmes;
support WIS as a GEOSS component with a core role
WIS Technical Specification Appendix C Requirements:
C.2.01, C.1.08, C.5.08, C.5.09, C.5.11, C.5.19, C.1.24, C.3.06, C.5.21,
C.1.12, C.5.06, C.5.10, C.5.03, C.5.04, C.5.20, C.1.11, C.5.05, C.5.17,
C.5.07, C.3.05, C.3.07, C.2.05, C.1.15, C.1.19, C.1.20, C.1.21, C.1.18b,
C.1.09, C.1.10, C.1.18a, C.5.01, C.5.02
Notes
The procedures for designation of a GISC or DCPC require that both type of
WIS centre maintain data, product and service catalogues in the WMOagreed standard format and facilitate access to these catalogues. Therefore,
network services should be treated as a type of WIS product that can be
discovered through the DAR catalogue.
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WIS-TechSpec-4, Maintenance of User Identification and Role Information
Applicable Standards
standards for content and communications are TBD by host of identification and role information
database
Communication Types
terminal-host; store-and-forward or file transfer (e.g., FTP, HTTP)
client-server; request-response (e.g., HTTP with CGI Web form)
Service Level Required
non-dedicated shared network may be used, provided there is privacy protection for identified individuals
as required by national laws
Network Transports and
Supporting Services
public or private Internet using TCP/IP with encryption;
typically HTTP with GET or POST methods, and may include SOAP
Performance Metrics
identification and
role information
the timeliness of changes to user identification and role information is application-specific and subject to
NC or DCPC procedures
WIS Data Flow Diagrams
WIS Technical Specification Appendix A, Diagram 2, Process A2:
Assign User Role
Inputs: User Requests
Outputs: User Requests with Assigned Role
WIS Technical Specification Appendix A, Diagram 2, Process A4:
Authorise Access to Information by Users
Inputs: Requests for Information
Outputs: Information Access Authorizations
Use Cases
WIS Technical Specification Appendix B Use Cases:
B.5, Maintain Identification and Role Information for WIS Users
WIS Requirements
(in addition to requirements
applicable to
all interfaces)
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] implements
backup and recovery of essential services; use dedicated telecommunications and public Internet for
timely delivery; identify and use a variety of data types across WMO programmes
WIS 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
Notes
For updating the identification and role information concerning candidate or current users of WIS, WIS
Centres 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 for
changing individual identification and role entries (add, change, or delete of elements in a record as well
as whole records).
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Use Case B.5, Maintain Identification and Role Information for WIS Users
Use Case Goal
Internal and external users of WIS are able to be identified as needed for their authentication, and
their role information is maintained as needed for their authorizations to perform specific
functions
Actors
Users of WIS (internal and external)
Administrators of authentication and authorization at WIS Centres
Pre-Conditions
(1) Administrators have agreed authentication policies delineating the credentials required to
establish identity of a WIS user
(2) Administrators have agreed authorization policies delineating which roles are authorized to
perform each WIS action
(3) Administrators have mechanisms to create and maintain identification information needed for
authentication of users of WIS
(4) Administrators have mechanisms to create and maintain role information needed for
authorization of authenticated users of WIS
Post-Conditions
WIS Centres collectively have the ability to authenticate each user of WIS and authorize him to
perform all of the functions appropriate to his role, and only those functions appropriate to
his role
Normal Flow
Identification and role information about candidate or current users of WIS are to be recorded
through facilities controlled by WIS Centres. Typically, two kinds of facilities should be
supported. One is a file upload facility for "batch" updating (add, replace, or delete the
identification and role records as separate files). The other is an online form for changing
identification and role records (add, change, or delete elements in a record as well as whole
records). Administrators of authentication and authorization at WIS Centres share the
updated identification and role information as a resource available as needed across WIS
Centres.
Notes and Issues
At this point in WIS system design, mechanisms have not been decided for handling identification
and role information as needed across WIS centres.
Last Updated
30 Oct 2007
Last Updated By
Eliot Christian
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WIS SERVICES
WIS provide three types of services to meet the
different requirements:
(1)
Routine collection and dissemination service
for time-critical and operation-critical data and
products:
Based on real-time “push” mechanism (incl. Multicast);
implemented essentially through dedicated telecommunication means
with guaranteed quality of service, e.g. leased circuits, dedicated
data communication network services and satellite-based datadistribution systems;
(2) Data Discovery, Access and Retrieval service:
Based on request/reply “pull” mechanism with relevant data
management functions; implemented essentially through the Internet
(HTTP, FTP,…);
(3) Timely delivery service for data and products:
Based on delayed mode “push” mechanism; implemented through a
combination of dedicated telecommunication means and of public data
networks, especially the Internet.
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Key Future Milestones
• Consolidate plans on development, governance
and implementation of WIS: 2007-2008
• Develop WIS regulatory documentation and
guidance material for implementation, including
specifications for the GISC interfaces and a
unified user interface: 2007-2008
• Develop scheme and practices for security,
authentication and authorization procedures for
WIS services : 2007-2008
• Implementation of first operational GISC: 2008
• Implementation of other operational GISCs: 2009
- 2011
• Implementation of DCPCs, i.e. WIS interfaces at
WMO programmes’ centres: 2008-2011
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WIS Project Gantt Chart
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CRITICAL ISSUES FOR WIS
• 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 the GTS.
• Defining steps to be taken to evolve the GTS towards WIS
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EVOLUTION OF THE GTS TOWARDS WIS
GENERAL PRINCIPLES
• WIS has to perform better than the current GTS in any stage
• Use of technology available now
• Take into account current changes in Regional Networks
• WIS to be cost-effective in the long run
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