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World meteorological organization


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Contact person on RTH/NMC matters





Title:

Surname:

First name:

Tel:

Fax:

E-mail:



Length of meteorological messages and size limits

Note: Bulletins of alphanumeric data transmitted on GTS should not exceed 15K and maximum length of bulletins for binary data is now 500K




1

What are the size limits (in bytes) of the bulletins able to be received or switched at your centre with no problem
Alphanumeric <15K 15K >15K
Binary <15K 15K 500K >500K


2

Does any of your connected users or centres have smaller size limits than your centre
YES / NO
If answering ‘YES’ please list the users/centres and their size limits
User/Centre Size limits (Alphanumeric / Binary)


3

Can your centre receive files of meteorological bulletins or perform file switching
YES / NO
If answering ‘YES’ what are the size limits of the files
Alphanumeric <15K 15K >15K
Binary <15K 15K 500K >500K



Migration to Table Driven Code Form (TAC Categories)


Category

Cat. 1: common

Cat. 2: satellite obs

Cat. 3: aviation

Cat. 4:

maritime

Cat. 5:

misc

Lists of

Traditional

code forms


SYNOP

SYNOP MOBIL

PILOT

PILOT MOBIL TEMP



TEMP MOBIL TEMP DROP CLIMAT

CLIMAT TEMP



SAREP

SATEM


SARAD SATOB

METAR

SPECI


TAF

AMDAR ROFOR



BUOY

TRACKOB


BATHY

TESAC


WAVEOB

SHIP


CLIMAT SHIP

PILOT SHIP

TEMP SHIP

CLIMAT TEMP SHIP



RADOB

IAC


IAC FLEET GRID(to GRIB) RADOF

4

Can your centre generate BUFR bulletins for the purpose of migration to table driven code form
YES / NO
If answering YES please list the name of the TAC - refer to the MTDCF TAC categories only


5

Can your centre generate CREX bulletins for the purpose of migration to table driven code form
YES / NO
If answering YES please list the name of the TAC - refer to the MTDCF TAC categories only


6

Can your centre decode and process BUFR bulletins with no requirements of the corresponding TAC, i.e. the TAC is no longer required.
YES / NO
If answering YES please list the name of the TAC - refer to the MTDCF TAC categories only


7

Can your centre decode and process CREX bulletins with no requirements of the corresponding TAC, i.e. the TAC is no longer required
YES / NO
If answering YES please list the name of the TAC - refer to the MTDCF TAC categories only



Conversion of TDCF in BUFR to TAC

Note: This is against the purpose of migration to TDCF and is not recommended. It may only be used as the last resort for the NMCs who are unable to receive TDCF in BUFR or unable to decode and process all or certain types of TDCF.




8

Can your centre convert TDCF in BUFR to TAC
YES / NO
If answering YES please list the name of the TAC your centre is able to convert from TDCF - refer to the MTDCF TAC categories only

Could your centre provide conversion support for other centres who are unable to receive TDCF in BUFR or unable to decode and process

the TDCF data
YES / NO



Conversion of TAC to TDCF in BUFR

Note: Most centres are doing this conversion as an interim measure in MTDCF before direct encoding from the source observations can be implemented. This is not making best use of TDCF but it is acceptable as an interim measure in migration




9

Can your centre convert TAC to TDCF in BUFR
YES / NO
If answering YES could your centre provide conversion and bulletin delivery support for other centres who are unable to deliver TDCF in BUFR
YES / NO

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