Transcript Integrated Global Data Dissemination Service (IGDDS) WMO Space Programme Expert Team on WIS & GTS, Tokyo, April 2006

Integrated
Global
Data
Dissemination
Service
(IGDDS)
WMO Space Programme
Expert Team on WIS & GTS, Tokyo, April 2006
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IGDDS presentation topics
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Background
Definition and baseline
Data acquisition : details on RARS
Dissemination: ADMs status and plans
Next steps, open issues
WMO Space Programme
Expert Team on WIS & GTS, Tokyo, April 2006
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IGDDS Background
Satellite data volume: a driving factor
NOAA POES
Estimated Evolution of Direct Broadcast Data Rates
METOP
FY-1
1000
FY-3
Logarithmic scale !
NPOESS-1+2
Meteor-M
Meteosat
10
MSG
GOES E,W
GOES-R
1
MTSAT
Elektro-L
WMO Space Programme
2020
2018
2016
2014
2012
2010
2008
2006
2004
2002
2000
1998
1996
1994
FY-2-C,E
1992
0.1
1990
Mb/s
100
Expert Team on WIS & GTS, Tokyo, April 2006
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IGDDS Background:
Space Programme Implementation Plan 2004-2007,
endorsed by WMO EC 56
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“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
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“ADM will allow seamless inclusion of data/products from LEO and
GEO operational and R&D environmental satellites”
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“In order to ensure [an optimized] dissemination system (..) it is
appropriate to consider (..) an IGDDS which builds on this ADM
concept
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IGDDS is central to the (..) integrated space-based GOS
[to access] the complete range of [its] data and products
WMO Space Programme
Expert Team on WIS & GTS, Tokyo, April 2006
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IGDDS Background
WMO EC 57:
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“…urged CBS to pursue the coordinated integration of (…) the
new IGDDS into the GTS / WIS …”
Group on Earth Observation (GEO)
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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”
WMO Space Programme
Expert Team on WIS & GTS, Tokyo, April 2006
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IGDDS Definition and baseline
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IGDDS : satellite data & products circulation scheme
 to meet the needs of WMO Programmes for improved access
 as agreed in WMO Space Programme Implementation Plan
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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)
WMO Space Programme
Expert Team on WIS & GTS, Tokyo, April 2006
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IGDDS definition and baseline
IGDDS within WIS in each region
All kinds of WMO programmes
data & products (mostly non-satellite)
IGDDS components
Data from operational
Polar and Geostationary
satellites available
within region
DataCollection
Collection&&
Data
ProductCentres
Centres
Product
Other regional data :
R&D, high-level
products
Inter-operability
(Satellite) Data Collection
& Product Centre
and data exchange
Global Information
System Centre
Data Dissemination (possibly shared with non-satellite)
Other data
communica
tion means
ADM #1
User
Community #1
WMO Space Programme
National
Centres
ADM #2
Other datacommunication
means
User
Community #2
Expert Team on WIS & GTS, Tokyo, April 2006
Users
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IGDDS definition and baseline
IGDDS regional/global implementation
Region A
Region B
Other data : R&D,
high-level
products
Data from operational
Polar and Geostationary
satellites available
within region A
Data Collection and
Products Centre
Inter-regional
Data Exchange
Other data :
R&D, high-level
products
Data from operational
Polar and Geostationary
satellites available
within region B
Data Collection and
Products Centre
Data Dissemination
Data Dissemination
ADM #1
ADM #1
User
Community #1
ADM #2
User
Community #2
WMO Space Programme
Other
distribution
means
User
Community #1
ADM #2
User
Community #2
Expert Team on WIS & GTS, Tokyo, April 2006
Other
distribution
means
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Data acquisition activities:
RARS for timely access to polar data
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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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
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Plan for Asia-Pacific RARS (distribution via GTS and Internet/FTP)
Plan for South-America RARS (distribution via GTS and
Internet/FTP)
WMO Space Programme
Expert Team on WIS & GTS, Tokyo, April 2006
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Data acquisition activities:
Current and planned RARS - December 2005
(5 degr. Elevation)
90
80
70
60
50
40
30
Latitude
20
-180
10
-160
-140
-120
-100
-80
-60
-40
0
-20 -10 0
20
40
60
80
100
120
140
160
180
-20
-30
-40
-50
-60
-70
-80
-90
AP-RARS
WMO Space Programme
EARS
SA-RARS
Expert Team on WIS & GTS, Tokyo, April 2006
Longitude
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Data dissemination activities
IGDDS dissemination approach
Dissemination concept reviewed at ET-SUP, CGMS, RARSADM workshop, and reported at CM-6 (Jan. 2006)
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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
WMO Space Programme
Expert Team on WIS & GTS, Tokyo, April 2006
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Data dissemination activities
ADMs by satellite operators
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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
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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
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Group on Earth Observation (GEO):
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Eumetcast serving as a demo for GEOnetcast within GEOSS
WMO Space Programme
Expert Team on WIS & GTS, Tokyo, April 2006
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Next steps (1/2)
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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
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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
WMO Space Programme
Expert Team on WIS & GTS, Tokyo, April 2006
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Next steps (2/2)
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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
Expert Team on WIS & GTS, Tokyo, April 2006
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