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APSDEU-7
20-22 Sept 2006, Honolulu Hawaii1
ASIA-PACIFIC RARS DEVELOPMENTS (Regional ATOVS Retransmission System)
David Griersmith7th Meeting of APSDEU, Honolulu Hawaii
20-22 September 2006
APSDEU-7
20-22 Sept 2006, Honolulu Hawaii2
History: RARS-2, APSDEU-6 and RARS-3
APSDEU-7, 20-22 Sept 2006, Honolulu Hawaii 3
2nd RARS Workshop recommendation on Asia-Pacific RARS (Dec 2005)
A) A pilot Asia-Pacific RARS be established comprising:
real time L1c ATOVS BUFR file exchange between major centres (at least Beijing, Melbourne, Seoul, Tokyo) by the target schedule date of April 2006;
Status: Operational system running since June 2006 Expected pilot phase 7-9 core baseline HRPT stations
status – implemented as at Sept 2006 trial data exchanges between major centres intra-
regionally and inter-regionally; status – late 2006 trial exchanges planned for intraregional - Melbourne-Singapore;; Melbourne to
Vladivostok; Melbourne to Wellington NZ; Melb to Honolulu inter-regional trial of Melbourne-Exeter, Tokyo-Washington
APSDEU-7, 20-22 Sept 2006, Honolulu Hawaii 4
RARS-2 recommendation cont.
B) Following the successful trial of the pilot Asia-Pacific RARS, an operational Asia-Pacific RARS be established by June 2006 comprising the routine operational exchange of ATOVS data for the core set of 7-9 HRPT stations. Done.
C) After the operational Asia-Pacific RARS is established with core baseline stations, an expanded operational RARS be established with up to 16 HRPT stations, with the target schedule date of December 2006. In Progress
D) In parallel with the above, the Asia-Pacific RARS Coordinator to provide all contributing RARS countries, plus WMO and EUMETSAT, with a draft project plan including details of the evolving HRPT network and country RARS Focal Points, by April 2006. Nearly complete
APSDEU-7, 20-22 Sept 2006, Honolulu Hawaii 5
Key outcomes from APSDEU-6 RARS discussion
1.1 Endorsement to establish Asia-Pacific RARS
1.2 APSDEU has a major role to play in RARS planning 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 Noting ITSC-14 WG International Issues & Future Systems Rec’n to define global HRPT baseline stns for global RARS system1.2.1 RARS Focal points to develop baseline A-P stations, plus examine
possibility of 10 more designated stns
1.2.2 Agree to adhere to global standards
APSDEU-7, 20-22 Sept 2006, Honolulu Hawaii 6
Outcomes from APSDEU-6 RARS discussion
baseline RARS stns and nodes
2.1 likely core baseline stations and potential additions Australia - Melbourne (2), Darwin, Perth, Casey, possibly Alice Springs
China - Beijing, Urumuqi, Guangzhou, Hong Kong
Japan - Kiyose, Syowa
Korea - Seoul
potential additions considered: Hawaii; New Zealand, Philippines, Singapore, Vladivostok, Dumont D’Urville, Tahiti, Fiji
2.2 Planning for intraregional dissemination centres (nodes) Tokyo, Melbourne, Beijing, possibly Seoul and Singapore
APSDEU-7, 20-22 Sept 2006, Honolulu Hawaii 7
RARS-3 Discussions
JMA stated that they were very happy with the progress of the Asia-Pacific RARS. NWP centres in Japan have evaluated the impact of this data and seen positive impacts and these centres would like to increase their utilisation of ATOVS data (e.g. with data from Europe and the Americas).
Dr Griersmith also welcomed the report that he had received from Korea on the implementation status, and felt that it would be beneficial to propagate this approach across the Asia-Pacific RARS initiative.
Concerning APSDEU, WMO expressed its appreciation for the opportunity to participate in the last APSDEU meeting (APSDEU-6) and was looking forward to participating in the APSDEU-7 meeting in September 2006 (Dr Griersmith will represent WMO at this meeting).
Finally, WMO expressed its appreciation for the rapid, and impressive, progress towards full implementation of the Asia-Pacific RARS.
APSDEU-7, 20-22 Sept 2006, Honolulu Hawaii 8
RARS-3 discussions cont.
noted good progress towards goal of global coverage and the issue of station overlaps was discussed. Currently inappropriate to optimise network to reduce overlaps which provide redundancy/robustness within the network, plus bandwidth cost was not excessive for ATOVS data. Once the network is fully operational readdress issue.
concluded that extension of the network to include AVHRR data (like EARS-AVHRR) could be very beneficial (noting that data volumes will be higher). Dr Griersmith particularly welcomed such an evolution.
need to place increased emphasis on the implementation of the South-American RARS leading up to RARS-4.
APSDEU-7, 20-22 Sept 2006, Honolulu Hawaii 9
RARS Implementation Group
RARS Implementation Group - Draft Terms of Reference to be tabled at CGMS Nov 2006. Jerome Lafeuille described main objectives of the Group:
Establishment of new RARS to expand the RARS network towards global coverage;
Inter-regional data exchange of RARS data;Standardisation in the areas of e.g:
– - product processing software usage;– - product formats;
quality-tagging of data; service management.
Ensuring consistency with the IGDDS conceptReviewing the RARS concept to ensure it fulfils regional
and global requirements for improved timeliness of critical LEO data
APSDEU-7
20-22 Sept 2006, Honolulu Hawaii10
ASIA-PACIFIC RARS STATUS
APSDEU-7, 20-22 Sept 2006, Honolulu Hawaii 11
Design
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-7, 20-22 Sept 2006, Honolulu Hawaii 12
Design-standardisation/harmonisation
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-7, 20-22 Sept 2006, Honolulu Hawaii 13
Current architecture
Processing/Dissemination Centre: Tokyo HRPT stations from which data are made available from the
Centre: Tokyo-Kiyose, Syowa, Antarctica, Seoul, Beijing, Guangzhou and Urumuqi
Comments: CMA advises that in the single Beijing ATOVS files sent to Tokyo each file comprises an amalgamation of data from 3 stations
Processing/Dissemination Centre: Melbourne HRPT stations from which data are made available from the
Centre: Melbourne-Crib Point (2 stations), Darwin, Perth
APSDEU-7, 20-22 Sept 2006, Honolulu Hawaii 14
Asia Pacific RARS (2) Processing or Dissemination Centre
HRPT stations providing ATOVS data
September 2006 To be added December 2006
Tokyo
Tokio-KiyoseSyowa (Antarctica)
Seoul BeijingGuangzhouUrumuqi
Melbourne Melbourne (x 2)
DarwinPerth
SingaporeVladivostokHonoluluNew ZealandHong KongHonolulu I hope
APSDEU-7, 20-22 Sept 2006, Honolulu Hawaii 15
Current system configuration
APSDEU-7, 20-22 Sept 2006, Honolulu Hawaii 16
Owner of ground station : National Institute of Polar ResearchLocation : Syowa Station, Antarctica (69.00S, 39.58E)Data acquisition and processing : HRPT data are received at Syowa Station and transmitted to NIPR via INMARSAT. The data are transmitted by FTP from NIPR to JMA/MSC via the Internet and processed at JMA/MSC.Coverage : Figure 2 shows actual coverage from 20 August to 31 August 2005 (12 days).Satellites : Mainly receiving NOAA-17 and NOAA-18, sometimes NOAA-15. The selection of satellite depends on NIPR’s research activities (including other satellites, such as EOS, DMSP).Frequency of acquisition:11 times per day on an averageProcessing sensor and data level:AMSU-A:
level 1a, 1b, 1cAMSU-B:
level 1a, 1b, 1c, 1dHIRS:
level 1a, 1b, 1c, 1dProcessing time (from start of receiving to end of processing):
About 30 minutes
APSDEU-7, 20-22 Sept 2006, Honolulu Hawaii 17
Pacific gaps
APSDEU-7, 20-22 Sept 2006, Honolulu Hawaii 18
Asia-Pacific RARS stations
Japan - Kiyose, Syowa 21 Aug - operational in RARSKorea - Seoul Sept test, operational in RARS as of Sept 2006Australia - Melbourne (2), Darwin, Perth operational in RARS:
Casey expected by March 2007; Davis by April 2007 subject to comms 10 stns
China - Beijing operational in RARS; expected Urumuqi, Guangzhou, Hong Kong by Dec 2006 13 stns
Singapore - exchange expected Sept 2006 14 stnsUSA - test exchange hoped for Hawaii Honolulu 15 stnsNew Zealand - exchange requested but depends on MetService
running AAPP 16 stns; possibility of NIWA stationAntarctica - Dumont D’Urville and McMurdoCanada - to be contacted after further operational progressTahiti - to be contactedFiji - NOAA station needs upgrade plus AAPP - possibly by Feb
2007Philippines - needs to be running AAPP plus stn upgradeVladivostok - exchange expected Sept 2006 possibly 22 stns
APSDEU-7, 20-22 Sept 2006, Honolulu Hawaii 19
RARS Vision
RARS increases satellite data use with big global impacts; expansion to AVHRR, ASCAT, geo data
RARS fits with WMO, GEO and an Asia-Pacific regional system for coordinated:
direct reception e.g. L-band, X-band processing (cal/nav) and archival applications R&D, education & training rapid data exchange
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).