WMO Space Programme, CBS Technical Conference1 Integrated Global Data Dissemination Service (IGDDS)

WMO Space Programme, CBS Technical Conference 1

IntegratedIntegratedGlobalGlobalDataDataDisseminationDisseminationService Service (IGDDS)(IGDDS)

2WMO Space Programme, CBS Technical Conference

IGDDS presentation topicsIGDDS presentation topics

Background Definition and baseline Data acquisition : details on RARS Dissemination: ADMs status and plans Next steps, open issues


IGDDS BackgroundIGDDS BackgroundSatellite data volume: a driving Satellite data volume: a driving factorfactor

Estimated Evolution of Direct Broadcast Data Rates

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Mb/

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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 !


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


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)


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)


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


IGDDS definition and baselineIGDDS definition and baselineIGDDS regional/global implementationIGDDS regional/global implementation


Geostationary satellites available within region A

Data Collection or Production Centre

Other data : R&D, high-level products

Region ARegion B


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


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.


Current and planned RARS - December 2005 (5 degr. Elevation)

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Longitude

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AP-RARS EARS SA-RARS

Data acquisition activities:Data acquisition activities:


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)


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


EUMETCast Overall EUMETCast Overall CoverageCoverage


Ku Band to C band (AsiaSat-4 at 122E)


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


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)

WMO Space Programme, CBS Technical Conference1 Integrated Global Data Dissemination Service (IGDDS)

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