APSDEU-6, 1-3 June 2005 Seoul, Korea 1 ASIA-PACIFIC RARS (Regional Advanced Redistribution System) IMPLEMENTATION PLAN Notes for APSDEU-6 by David Griersmith and Robert Husband on CGMS/WMO Workshop Dec 2004 in Darmstadt, Eumetsat and Asia-Pacific RARS plan

APSDEU-6, 1-3 June 2005, Seoul, Korea2 EARS/RARS model

APSDEU-6, 1-3 June 2005, Seoul, Korea3 HRPT and Eumetsat operations ATOVS Retransmission Equipment AAPP Processing Node AAPP Processing Node Router HRPT Data ProviderEUMETSAT ATOVS Support Services Operational Interaction EUMETSAT Operations HRPT Operations ATOVS Service Information Monitoring and Control Operational Support, at EUMETSAT request Normal station operations HRPT Equipment

APSDEU-6, 1-3 June 2005, Seoul, Korea4 CGMS/WMO REGIONAL ATOVS RE- TRANSMISSION SYSTEM (RARS) WORKSHOP EUMETSAT Headquarters, Darmstadt, Germany December 2004 Final Report on WMO web site

APSDEU-6, 1-3 June 2005, Seoul, Korea5 Data Collection uHRPT Stations l Built on existing national stations (Australia, China incl HK, Japan, Korea, New Zealand) l Further stations identified subject to coverage/user requirement assessment (e.g. NWP models) network/communications considerations possible candidates (need to define this) –Singapore, Guam, Tahiti, Fiji, Hawaii –additional Antarctic stations (McMurdo, Dumont d’Urville, Siyowa – in addition to Casey) – possibility of integrated approach l assume processing done at each HRPT station – output AAPP Level 1a or 1c l Transfer of data between stations and processing centres – hybrid mixture of GTS-based FTP, internet-based FTP, national communications

APSDEU-6, 1-3 June 2005, Seoul, Korea6 Standardisation Recommendations uAnything disseminated inter-regionally must use a commonly agreed version of the AAPP software, and should be in BUFR (which should be integrated into the distributed software) uMinimum standards should be set for quality-tagging of data (source traceability, ……) uMinimum service management standards should be set (points to be addressed are in the EARS documentation) uEUMETSAT can assist with its quality control and monitoring software (free)

APSDEU-6, 1-3 June 2005, Seoul, Korea7 Data Collection and Distribution ubetween 2 and 6 Data Collection and Distribution Centres (Nodes) proposed: l Tokyo, Beijing, Seoul etc (approximates to Region II) l Melbourne, Singapore etc (approximates to region V) l Needs to be discussed at APSDEU-6 uCentres responsible for both regional and inter-regional distribution uBuilds on GTS architecture uRegional distribution will use a combination of FTP/Internet or GTS – depends on available connectivity uInter-regional distribution – first preference is GTS – subject to meeting timeliness targets – tests to be conducted (Melbourne<>Tokyo, Tokyo<>Washington, Melbourne<>Exeter); possibility of China comms satellite? Exchange timeliness to be measured. uDissemination architecture proposed reflects the specifics of the Asia/Pacific region (limited number of centres requiring ATOVS data, but ECMWF and others like NCEP want global RT ATOVS)

APSDEU-6, 1-3 June 2005, Seoul, Korea8 RARS context uRARS increases satellite data use with big global impacts; expansion to AVHRR, ASCAT, geo data uRARS fits with WMO, GEOSS and an Asia-Pacific regional system for coordinated: l rapid data exchange l direct reception l processing (cal/nav) and archival l applications l R&D, training ubalance between local reception and global non-local access driven by user needs, security of access, satellite constraints (DB/onboard storage), operator constraints (availability of RT products).

APSDEU-6, 1-3 June 2005, Seoul, Korea9 Australia: requirements uRequirements via RARS: l ATOVS, ASCAT; also MODIS, AIRS, DMSP (e.g.SSM/IS) uGeographical regions: global. Australian region requirements well met but would like to expand to Antarctica and NZ, then global uSatellites for RARS data: NOAA, Metop, DMSP, ENVISAT, NPP, NPOESS, FY-3, Aqua, Terra uData formats: BUFR mainly, possibly HDF (for ATOVS Level 1d) uTimeliness: <2 hours for global, but preferably better for meso models (30 mins) uMechanisms: l initially GTS; could also be satellite broadcast, Internet, ftp server, RANET (Radio and Internet for the Communication of Hydrometeorological and Climate Related Information) etc. Cost of access is an issue.

APSDEU-6, 1-3 June 2005, Seoul, Korea10 Australia: current capabilities uData Acquisition l six HRPT stations l four X-band stations - two part owned ABoM uReception: all NOAAs, FY-1d for HRPT stations, plus all Terra and Aqua overpasses uAVHRR, ATOVS, DCPs; CAPS, McIDAS and AAPP used uRoughly 15 passes per day per station uDistribution: WAN across Australia, plus optical fibre within Head Office, plus Internet uInfrastructure to assist with RARS(s) - yes - major web site ftp servers, GTS, SATAID satellite data server.

APSDEU-6, 1-3 June 2005, Seoul, Korea11 Key issues for APSDEU-6 RARS discussion uCoordination and establishment 1.1 Endorse and agree to establishment of Asia-Pacific RARS, noting recent CGMS/WMO meeting, need for a regional and global exchange system, with user requirements especially NWP as the driving force 1.2 APSDEU has a major role to play in RARS palnning and implementation due to its successful history in data exchange - the APSDEU community can contribute significantly to RARS implementation in the Asia-Pacific region 1.2 Agree management scheme for A-P RARS Agree to coordinate closely with WMO and Eumetsat and where possible/appropriate incorporate lessons learned from EARS establishment Action: Appoint overall Asia-Pacific RARS coordinator Action: Each country to designate one focal point

APSDEU-6, 1-3 June 2005, Seoul, Korea12 Key issues for APSDEU-6 RARS discussion cont. uHRPT network 2.1 Action: Agree on baseline stations Australia - Melbourne (2), Darwin, Perth, Casey China - Lasha, Beijing, Urumuqi, Guangzhou Hawaii Hong Kong Japan - mainland, Siyowa Korea - New Zealand Philippines Singapore Vladivostok others - Dumont D’Urville, Tahiti, Fiji 2.2 Action: Each focal point to contact designated HRPT stations

APSDEU-6, 1-3 June 2005, Seoul, Korea13 Key issues for APSDEU-6 RARS discussion cont. uStandardisation 3.1Endorse CGMS/WMO RARS workshop approach and recommendations on standardisation and formats 3.2 Action: Robert Husband to provide CGMS/WMO report uData requirements and distribution 4.1 Action: Review and/or provide User requirements to WMO Don Hinsman/Robert Husband and to A-P RARS coordinator- see CGMS/WMO RARS workshop (~30mins timeliness) 4.2 Action: Centres i.e. nodes to be agreed - Melbourne, Tokyo, Beijing, Seoul, Singapore? Depends on mode of dissemination 4.3 Action: Agree initial dissemination mechanism as ftp over GTS 4.4 Examine other mechanisms - DVB satellite broadcast

APSDEU-6, 1-3 June 2005, Seoul, Korea14 Key issues for APSDEU-6 RARS discussion cont. uImplementation plan 5.1 Agree implementation schedule 5.2 Timelines - phase 1 (core contributors, GTS), phase 2 (others, other comms) 5.3 Action: ATOVS data exchange trials via ftp on GTS to take place (see list from JMA Takeuchi-san presentation on 1 June) e.g. Melb-Tokyo (intraregional), Melb-Exeter (interregional), Tokyo to Seoul and Beijing 5.4 Resources deployment and affordability e.g. assessment of resources required for smaller contributors e.g. PCs, assistance with AAPP, comms costs/bandwidth 5.5 Hardware and software - AAPP and Eumetsat QC monitoring software; PCs at each station and servers at nodes 5.6 Expansion - implications of distribution of satellite data beyond ATOVS need consideration