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

2. 2WMO Space Programme, CBS Technical Conference IGDDS presentation topics Background Definition and baseline Data acquisition : details on RARS Dissemination: ADMs status and plans Next steps, open issues

3. 3WMO Space Programme, CBS Technical Conference IGDDS Background Satellite data volume: a driving factor Logarithmic scale !

4. 4WMO Space Programme, CBS Technical Conference IGDDS Background: Space Programme Implementation Plan 2004-2007, 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

5. 5WMO Space Programme, CBS Technical Conference IGDDS Background 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)

6. 6WMO Space Programme, CBS Technical Conference IGDDS Definition and baseline 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)

7. 7WMO Space Programme, CBS Technical Conference IGDDS definition and baseline IGDDS within 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 communica tion 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

8. 8WMO Space Programme, CBS Technical Conference IGDDS definition and baseline IGDDS 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 A Region 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 #1ADM #2 Other distribution means Data Dissemination User Community #1 User Community #2 ADM #1ADM #2 Other distribution means Inter-regional Data Exchange

9. 9WMO Space Programme, CBS Technical Conference Data acquisition activities: RARS 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.

10. 10WMO Space Programme, CBS Technical Conference Data acquisition activities:

11. 11WMO Space Programme, CBS Technical Conference Data dissemination activities IGDDS 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)

12. 12WMO Space Programme, CBS Technical Conference Data dissemination activities ADMs 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

13. 13WMO Space Programme, CBS Technical Conference EUMETCast Overall Coverage

14. 14WMO Space Programme, CBS Technical Conference Ku Band to C band (AsiaSat-4 at 122E)

15. 15WMO Space Programme, CBS Technical Conference 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

16. 16WMO Space Programme, CBS Technical Conference 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)