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

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

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.

Information available at Météo-France 1/4

Reception at LFPW Broadcast by LFPW

Call sign

Header

Channel

Reception date

Size

Format

Error

Operator

Call sign

Channel

Broadcast date

Time lapse

Broadcast size

Recipient

List of call signs available 2/4

Country Call sign Country Call sign

Denmark OXGN2 Japan JCCX

OXTS2 JGQH

OXVH2 JIVB

ASDK01 JDWX

E-ASAP ASEU01 JNSR

ASEU02 Norway LDWR

ASEU03 South Africa ZSAF

ASEU04 Spain EBUQ

ASEU05 United Kingdom ASGB01

France ASFR1 USA WTEC

ASFR2 Iceland V2XM

Germany ASDE01 Australia 3FPI7

ASDE02 Italia V2BD9

ASDE03

ASDE04

DBLK

Other call signs for tests

Country Call sign

? SHIP

? TEST

? TEST2

? TEST3

? TEST4

? TEST5

? TEST07

? TESTHAM

? ASTEST

Origin of the messages 1/2 3/4

Offenbach Exeter Telex Email

OXGN2 597 0 0 0

OXTS2 219 310 0 0

OXVH2 127 165 0 0

ASDK01 157 184 0 0

ASEU01 52 151 155 146

ASEU02 0 211 60 69

ASEU03 0 98 73 139

ASEU04 0 91 151 170

ASEU05 0 256 128 59

ASFR1 0 0 280 215

ASFR2 0 0 291 211

ASDE01 4 120 176 221

ASDE02 276 130 81 0

ASDE03 28 109 119 249

ASDE04 301 0 49 27

Origin of the messages 2/2

Offenbach Exeter Telex Email

DBLK 662 0 0 0

JCCX 0 118 0 0

JGQH 0 242 0 0

JIVB 0 75 0 0

JDWX 0 75 0 0

JNSR 0 308 0 0

ZSAF 0 0 0 55

EBUQ 0 398 16 6

ASGB01 0 56 42 82

WTEC 0 239 0 0

V2XM 0 199 47 85

V2BD9 0 16 0 1

XXXXX 207 1407 139 137

ASDE04 ? 201 0 10 9

4/4

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

Month Origin Nb 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-06 EGRR 1439 14 0,97%

EDZW 317 4 1,26%

Total 1756 18 1,03% 0 0,00%

Nov-06 EGRR 1166 3 0,26%

EDZW 245 0 0,00%

Total 1411 3 0,21% 7 0,50%

Dec-06 EGRR 461 0 0,00%

EDZW 441 4 0,91%

Total 902 4 0,44% 8 0,89%

Jan-07 EGRR 652 0 0,00%

EDZW 548 4 0,73%

Total 1200 4 0,33% 9 0,75%

Fev-07 EGRR 551 0 0,00%

EDZW 468 0 0,00%

Total 1019 0 0,00% 3 0,29%

Mar-07 EGRR 710 0 0,00%

EDZW 864 4 0,46%

Total 1574 4 0,25% 15 0,95%

Total EGRR 4979 17 0,34%

EDZW 2883 16 0,55%

Total 7862 33 0,42% 42 0,53%

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.

Mean time before the integration of the messages in the GTS in Toulouse.

§ HH is the synoptic hour of reference

All (11574 report parts)

0

10

20

30

40

50

60

70

80

90

100

Example 1 for ships

ASDE03 (567 report parts)

0

10

20

30

40

50

60

70

80

90

100

ASEU05 (491 report parts)

0

10

20

30

40

50

60

70

80

90

100

Example 2 for ships

ASFR2 (523 report parts)

0

10

20

30

40

50

60

70

80

90

100

DBLK (658 report parts)

0

10

20

30

40

50

60

70

80

90

100

Example 3 for ships

V2XM (338 report parts)

0

10

20

30

40

50

60

70

80

90

100

JGQH (262 report parts)

0

10

20

30

40

50

60

70

80

90

100

Nb of message received / Nb of observation realized

Month Call Sign Number of observation realized

Number of message received

Number of messages lost

Oct-06 ASFR1 22 21 1

  ASFR2 26 24 2

Nov-06 ASFR1 24 23 1

  ASFR2 25 24 1

Dec-06 ASFR1 21 19 2

  ASFR2 29 29 0

Jan-07 ASFR1 27 26 1

  ASFR2 23 22 1

Feb-07 ASFR1 21 20 1

  ASFR2 26 26 0

March-07 ASFR1 not available not available not available

  ASFR2 21 21 1

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.

Specific studies in addition

Ship DateDelay B-A (min)

ASDE02 17/11/2006 98ASDE02 17/11/2006 71ASDE02 18/11/2006 61ASDE02 21/11/2006 114ASDE02 22/11/2006 39ASDE02 27/11/2006 43ASDE02 29/11/2006 47ASEU05 17/11/2006 35ASEU05 18/11/2006 79ASEU05 18/11/2006 52ASEU05 19/11/2006 45ASEU05 20/11/2006 54ASEU05 20/11/2006 23EBUQ 23/12/2006 66V2XM 01/12/2006 56V2XM 02/12/2006 46V2XM 02/01/2007 64V2XM 09/01/2007 96V2XM 11/01/2007 108V2XM 12/01/2007 51

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.

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.

Thank you for your attention