Example of end-to-end report of the ASAP data dissemination

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

2. ASAP monitoring centre forASAP 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 2006. • 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

4. List of call signs available 2/4

5. Other call signs for tests

6. Origin of the messages 1/2 3/4

7. Origin of the messages 2/2 4/4

8. Global result of the syntactic check for the messages following the origin

9. Difficulties with the syntax for E-mail and Telex origin • All the messages received by E-mail 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 ASEU03 12111 99394 70156 11095 99023 14433 01503 00216 12040 00509 92862 06015 36006 85556 07459 35002 70129 01370 35007 50572 19772 00511 40733 31561 34517 30931 46567 35520 25049 55565 34523 20189 64362 33521 15366 57375 30513 10621 58777 27504 88192 65762 33021 77999 31313 48070 81049 90210= UUBB ASEU03 12118 99394 70156 11095 …. Operator USVX01 LFPW…UUAA ASEU03 12111 99394 70156 11095 99023 14433 01503 00216 12040 00509 92862 06015 36006 85556 07459 35002 70129 01370 35007 50572 19772 00511 40733 31561 34517 30931 46567 35520 25049 55565 34523 20189 64362 33521 15366 57375 30513 10621 58777 27504 88192 65762 33021 77999 31313 48070 81049 90210= UKVX01 LFPW…UUBB ASEU03 12118 99394 70156 11095 …. • 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

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