1. WMO Space Programme Expert Team on WIS & GTS, Tokyo, April 20061 Integrated Global Data Dissemination Service (IGDDS)

2. 2WMO Space Programme Expert Team on WIS & GTS, Tokyo, April 2006 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 Expert Team on WIS & GTS, Tokyo, April 2006 IGDDS Background Satellite data volume: a driving factor Logarithmic scale !

4. 4WMO Space Programme Expert Team on WIS & GTS, Tokyo, April 2006 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 Expert Team on WIS & GTS, Tokyo, April 2006 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 Expert Team on WIS & GTS, Tokyo, April 2006 IGDDS Definition and baseline IGDDS : satellite data & products circulation 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 Expert Team on WIS & GTS, Tokyo, April 2006 IGDDS definition and baseline IGDDS within WIS in each region Data from operational Polar and Geostationary satellites available within region (Satellite) Data Collection & Product 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 Expert Team on WIS & GTS, Tokyo, April 2006 IGDDS definition and baseline IGDDS regional/global implementation Data from operational Polar and Geostationary satellites available within region A Data Collection and Products 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 and Products 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 Expert Team on WIS & GTS, Tokyo, April 2006 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 Expert Team on WIS & GTS, Tokyo, April 2006 Data acquisition activities:

11. 11WMO Space Programme Expert Team on WIS & GTS, Tokyo, April 2006 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 Expert Team on WIS & GTS, Tokyo, April 2006 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 Expert Team on WIS & GTS, Tokyo, April 2006 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

14. 14WMO Space Programme Expert Team on WIS & GTS, Tokyo, April 2006 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)