Post on 10-Jan-2016
description
WMO Space Programme, CBS Technical Conference 1
IntegratedIntegratedGlobalGlobalDataDataDisseminationDisseminationService Service (IGDDS)(IGDDS)
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IGDDS presentation topicsIGDDS presentation topics
Background Definition and baseline Data acquisition : details on RARS Dissemination: ADMs status and plans Next steps, open issues
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IGDDS BackgroundIGDDS BackgroundSatellite data volume: a driving Satellite data volume: a driving factorfactor
Estimated Evolution of Direct Broadcast Data Rates
0.1
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10
100
1000
1990
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Mb/
s
NOAA POES
METOP
FY-1
FY-3
NPOESS-1+2
Meteor-M
Meteosat
MSG
GOES E,W
GOES-R
MTSAT
Elektro-L
FY-2-C,E
Logarithmic scale !
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IGDDS Background: IGDDS Background: Space Programme Implementation Plan Space Programme Implementation Plan 2004-2007, endorsed by WMO EC 562004-2007, endorsed by WMO EC 56
“Access to satellite data and products (…) would be through a composite system consisting of Direct Broadcast (DB) and Advanced Dissemination Methods (ADM) […] ADM would be the baseline
“ADM will allow seamless inclusion of data/products from LEO and GEO operational and R&D environmental satellites”
“In order to ensure [an optimized] dissemination system (..) it is appropriate to consider (..) an IGDDS which builds on this ADM concept
IGDDS is central to the (..) integrated space-based GOS [to access] the complete range of [its] data and products
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IGDDS BackgroundIGDDS Background
WMO EC 57:WMO EC 57: “…urged CBS to pursue the coordinated integration of (…) the
new IGDDS into the GTS / WIS …”
Task WE-06-04: “support the development of ADMs as part of an operational IGDDS, as a component of the WIS and a contribution to GEO-Netcast”
Group on Earth Observation (GEO)Group on Earth Observation (GEO)
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IGDDS Definition and IGDDS Definition and baselinebaseline
IGDDS : satellite data & products exchange scheme to meet the needs of WMO Programmes for improved access as agreed in WMO Space Programme Implementation Plan
IGDDS Baseline – Integrates all satellite-related data fluxes– Global exchange of satellite data among regional centres– Dissemination relying on ADM and Direct Broadcast
• ADM mainly via Digital Video Broadcast by telecom satellite• cost-efficient for end-users and for operators
– fully integrated within the WMO Information System (WIS)
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IGDDS definition and baselineIGDDS definition and baselineIGDDSIGDDS withinwithin WIS WIS
Data from operational Polar and
Geostationary satellites available within region
(Satellite) Data Collection or Production Centre
Other regional data :R&D, high-level
products
IGDDS components
Inter-operability
and data exchange
Other data communication means
Data Dissemination (possibly shared with non-satellite)
User Community #1
User Community #2
ADM #1 ADM #2
Data Collection & Product Centres
Global Information System Centre
All kinds of WMO programmes data & products (mostly non-satellite)
Data Collection & Product Centres
National Centres
Users
Other data-communication means
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IGDDS definition and baselineIGDDS definition and baselineIGDDS regional/global implementationIGDDS regional/global implementation
Data from operational Polar and
Geostationary satellites available within region A
Data Collection or Production Centre
Other data : R&D, high-level products
Region ARegion B
Data from operational Polar and
Geostationary satellites available within region B
Other data : R&D, high-level
products
Data Collection or Production Centre
Data Dissemination
User Community #1
User Community #2
ADM #1 ADM #2
Other distribution means
Data Dissemination
User Community #1
User Community #2
ADM #1 ADM #2
Other distribution means
Inter-regional Data Exchange
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Data acquisition activities:Data acquisition activities:RARS for timely access to polar dataRARS for timely access to polar data
EARS (Eumetsat) covers Europe, N-America and North Pole– expanding to include new data (AVHRR, ASCAT from METOP)– distribution via GTS and DVB-satellite broadcast
Plan for Asia-Pacific RARS (distribution via GTS and Internet/FTP) Plan for South-America RARS (distribution via GTS and
Internet/FTP)
Regional ATOVS Retransmission Services (RARS) complement the baseline ground segments of polar satellites:
Data acquired by several local receiving stations are concentrated, processed and redistributed for regional and global NWP users
Timeliness= 30 minutes instead of 2-3 hours for global data.
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Current and planned RARS - December 2005 (5 degr. Elevation)
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-180 -160 -140 -120 -100 -80 -60 -40 -20 0 20 40 60 80 100 120 140 160 180
Longitude
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titu
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AP-RARS EARS SA-RARS
Data acquisition activities:Data acquisition activities:
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Data dissemination activitiesData dissemination activities IGDDS dissemination approachIGDDS dissemination approach
Global ADM coverage possible with at least 4 “regional” dissemination services to be established by satellite operators
or consortia including satellite operators critical need for Asia-Pacific region
Sat operators to take responsibility for ADM dissemination services over regions consistent with the location of their primary users (e.g. footprint of their GEO satellites )
Target date : January 2007
Dissemination concept reviewed at ET-SUP, CGMS, RARS-ADM workshop, and reported at CM-6 (Jan. 2006)
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Data disseminationData dissemination activitiesactivities ADMs by satellite operatorsADMs by satellite operators
Europe : Eumetcast-Ku band (Eumetsat) Africa and Caribbean: Eumetcast-C band North-, Central & South-America :
– pilot Eumetcast-C band for 2006-2008 considerations for transition to a NOAA ADM by 2008
Asia-Pacific regions :– current Shinetek ADM over China trial planned in 2006 for wide Asia-Pacific ADM including
DVB-S broadcast complemented by terrestrial links Group on Earth Observation (GEO):
Eumetcast serving as a demo for GEOnetcast within GEOSS
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EUMETCast Overall EUMETCast Overall CoverageCoverage
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Ku Band to C band (AsiaSat-4 at 122E)
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Next steps (1/2) Next steps (1/2)
Data acquisition– Expansion of RARS network to near-global coverage
– Access to R&D satellite data to be further developed
– Inter-regional exchange mechanisms to be consolidated
Dissemination by ADMs– Near-global ADM coverage expected by 2007
– EUMETSAT-NOAA transition to be considered for Americas
– Trial to be followed by operational system in Asia-Pacific
– ADM Operators Standards to be addressed
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Next steps (2/2) Next steps (2/2)
Overall system approach– Draft IGDDS Implementation Plan for review
– Continuity and back-up issues to be addressed
– Rolling Review mechanism for User Requirements
– Data management: catalogue and meta-data issues (WIS)