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Example of end-to-end report of the ASAP data dissemination Joint WMO/IOC Technical Commission for Oceanography – Ship Observation Team April 2007 - Gérard.

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Presentation on theme: "Example of end-to-end report of the ASAP data dissemination Joint WMO/IOC Technical Commission for Oceanography – Ship Observation Team April 2007 - Gérard."— Presentation transcript:

1 Example of end-to-end report of the ASAP data dissemination Joint WMO/IOC Technical Commission for Oceanography – Ship Observation Team April Gérard Rey – DSO/DOA

2 ASAP monitoring centre for ASAP data dissemination  The ASAP monitoring centre was established by Météo-France, as agreed at the Seventh Session of the ASAP Co-ordination Committee (ACC, the ancestor of the ASAP Panel). Since that time, Météo France has been routinely providing annual monitoring report on behalf of the ASAP.  Due to modifications in the localisation of the upper air observation department which moved from Trappes to Toulouse at the end of 2004, the change of people in charge of it in 2005 and 2006, and the new organization of the data processing department, Météo- France was not able to provide this report in  This is a proposal to enhance the functions of the ASAP Monitoring Centre by regularly producing an end-to-end report of the ASAP data dissemination performance.

3 Information available at Météo-France 1/4 Reception at LFPWBroadcast by LFPW Call sign Header Channel Reception date Size Format Error Operator Call sign Channel Broadcast date Time lapse Broadcast size Recipient

4 List of call signs available 2/4 CountryCall signCountryCall sign DenmarkOXGN2JapanJCCX OXTS2JGQH OXVH2JIVB ASDK01JDWX E-ASAPASEU01JNSR ASEU02NorwayLDWR ASEU03South AfricaZSAF ASEU04SpainEBUQ ASEU05United KingdomASGB01 FranceASFR1USAWTEC ASFR2IcelandV2XM GermanyASDE01Australia3FPI7 ASDE02ItaliaV2BD9 ASDE03 ASDE04 DBLK

5 Other call signs for tests CountryCall sign ?SHIP ?TEST ?TEST2 ?TEST3 ?TEST4 ?TEST5 ?TEST07 ?TESTHAM ?ASTEST

6 Origin of the messages 1/2 3/4 OffenbachExeterTelex OXGN OXTS OXVH ASDK ASEU ASEU ASEU ASEU ASEU ASFR ASFR ASDE ASDE ASDE ASDE

7 Origin of the messages 2/2 OffenbachExeterTelex DBLK JCCX JGQH JIVB07500 JDWX07500 JNSR ZSAF00055 EBUQ ASGB WTEC V2XM V2BD XXXXX ASDE04 ? /4

8 Global result of the syntactic check for the messages following the origin MonthOriginNb of messages received Nb of messages in error Percentage of messages in error Nb of messages with operator action Percentage of messages with operator action Oct-06EGRR ,97% EDZW31741,26% Total ,03%00,00% Nov-06EGRR116630,26% EDZW24500,00% Total141130,21%70,50% Dec-06EGRR46100,00% EDZW44140,91% Total90240,44%80,89% Jan-07EGRR65200,00% EDZW54840,73% Total120040,33%90,75% Fev-07EGRR55100,00% EDZW46800,00% Total101900,00%30,29% Mar-07EGRR71000,00% EDZW86440,46% Total157440,25%150,95% TotalEGRR ,34% EDZW ,55% Total ,42%420,53%

9 Difficulties with the syntax for and Telex origin  All the messages received by are seen with a syntax error by our check system, because they are for the moment handled by an operator to add the transmission header. Example : UUAA ASEU = UUBB ASEU …. Operator USVX01 LFPW… UUAA ASEU = UKVX01 LFPW… UUBB ASEU ….  Most of the messages received by telex are also seen with a syntax error.

10 Mean time before the integration of the messages in the GTS in Toulouse. § HH is the synoptic hour of reference

11 Example 1 for ships

12 Example 2 for ships

13 Example 3 for ships

14 Nb of message received / Nb of observation realized MonthCall SignNumber of observation realized Number of message received Number of messages lost Oct-06ASFR ASFR Nov-06ASFR ASFR Dec-06ASFR ASFR229 0 Jan-07ASFR ASFR Feb-07ASFR ASFR226 0 March-07ASFR1not available ASFR221 1

15 Possible comparisons not retained  Size comparison between the messages received and the message broadcasted This comparison is technically possible but not relevant because it would measure only the performances of the French treatment.  Comparison between the messages broadcasted by the ships and the messages received in Toulouse This comparison could be of interest but it supposes that the original messages broadcasted by the ships would be transmitted directly to Toulouse by a different and secure way to be able to realize a character by character comparison.

16 Specific studies in addition It is possible that some events lead to make a special study on the dissemination of the TEMPSHIPS For example, we had a recent problem with the Inmarsat Land Earth Station of Goonhilly (LES 102 AOR-E) and some messages were routed via the station of Aussaguel (LES 121 AOR-E). For problems of header, we lost a few messages and some had to be handled by an operator with sometimes a delay too big. It would be useful to think about a backup procedure.

17 Periodicity of the report  An annual report doesn’t permit a good reactivity to improve the performance of the network, so we propose to provide a quarterly short midrange report and a complete annual report.  We will need a few weeks to optimize the way of producing the midrange reports and it is unlikely that we produce any new report before October 2007.

18 Thank you for your attention


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