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EARS/RARS model

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. EARS/RARS model. HRPT Data Provider. EUMETSAT.

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EARS/RARS model

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

  2. EARS/RARS model APSDEU-6, 1-3 June 2005, Seoul, Korea

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

  4. CGMS/WMO REGIONAL ATOVS RE-TRANSMISSION SYSTEM (RARS) WORKSHOP EUMETSAT Headquarters, Darmstadt, Germany 16-17 December 2004 Final Report on WMO web site APSDEU-6, 1-3 June 2005, Seoul, Korea

  5. Data Collection • HRPT Stations • Built on existing national stations (Australia, China incl HK, Japan, Korea, New Zealand) • 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 • assume processing done at each HRPT station – output AAPP Level 1a or 1c • 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, Korea

  6. Standardisation Recommendations • Anything 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) • Minimum standards should be set for quality-tagging of data (source traceability, ……) • Minimum service management standards should be set (points to be addressed are in the EARS documentation) • EUMETSAT can assist with its quality control and monitoring software (free) APSDEU-6, 1-3 June 2005, Seoul, Korea

  7. Data Collection and Distribution • between 2 and 6 Data Collection and Distribution Centres (Nodes) proposed: • Tokyo, Beijing, Seoul etc (approximates to Region II) • Melbourne, Singapore etc (approximates to region V) • Needs to be discussed at APSDEU-6 • Centres responsible for both regional and inter-regional distribution • Builds on GTS architecture • Regional distribution will use a combination of FTP/Internet or GTS – depends on available connectivity • Inter-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. • Dissemination 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, Korea

  8. RARS context • RARS increases satellite data use with big global impacts; expansion to AVHRR, ASCAT, geo data • RARS fits with WMO, GEOSS and an Asia-Pacific regional system for coordinated: • rapid data exchange • direct reception • processing (cal/nav) and archival • applications • R&D, training • balance 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, Korea

  9. Australia: requirements • Requirements via RARS: • ATOVS, ASCAT; also MODIS, AIRS, DMSP (e.g.SSM/IS) • Geographical regions: global. Australian region requirements well met but would like to expand to Antarctica and NZ, then global • Satellites for RARS data: NOAA, Metop, DMSP, ENVISAT, NPP, NPOESS, FY-3, Aqua, Terra • Data formats: BUFR mainly, possibly HDF (for ATOVS Level 1d) • Timeliness: <2 hours for global, but preferably better for meso models (30 mins) • Mechanisms: • 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, Korea

  10. Australia: current capabilities • Data Acquisition • six HRPT stations • four X-band stations - two part owned ABoM • Reception: all NOAAs, FY-1d for HRPT stations, plus all Terra and Aqua overpasses • AVHRR, ATOVS, DCPs; CAPS, McIDAS and AAPP used • Roughly 15 passes per day per station • Distribution: WAN across Australia, plus optical fibre within Head Office, plus Internet • Infrastructure to assist with RARS(s) - yes - major web site www.bom.gov.au, ftp servers, GTS, SATAID satellite data server. APSDEU-6, 1-3 June 2005, Seoul, Korea

  11. Key issues for APSDEU-6 RARS discussion • Coordination 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 1.2.1 Agree to coordinate closely with WMO and Eumetsat and where possible/appropriate incorporate lessons learned from EARS establishment 1.2.2 Action: Appoint overall Asia-Pacific RARS coordinator 1.2.3 Action: Each country to designate one focal point APSDEU-6, 1-3 June 2005, Seoul, Korea

  12. Key issues for APSDEU-6 RARS discussion cont. • HRPT 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, Korea

  13. Key issues for APSDEU-6 RARS discussion cont. • Standardisation 3.1Endorse CGMS/WMO RARS workshop approach and recommendations on standardisation and formats 3.2 Action: Robert Husband to provide CGMS/WMO report • Data 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, Korea

  14. Key issues for APSDEU-6 RARS discussion cont. • Implementation 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 APSDEU-6, 1-3 June 2005, Seoul, Korea

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