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Note 1 : The "WMO
message" envelopes the "WMO bulletin" and has an end sequence called a: Ending line: [ cr ] [ cr ] [ lf ] [ETX]These two lines are not allowed in this process. |
Structure of the File File Name Practice Currently Used
|
Example
filename Using assumed account established with RTH Melbourne (AMMC) ammc_dt.211515 |
The files sent may contain
one or more bulletins. Each bulletin in the file (including the first one) must
be prefixed with a flag field to separate
bulletins. The bulletin size should meet the WMO standard to achieve switching
of the bulletins onto the MTN of the GTS.
The receiving center will
detine which "flag field separator" the data providers will use. This flag
field is written in International Alphabet No. 5 and is always required in the
contents of the file, even for a one bulletin product.
An example
Bulletin Flag Field Separator
format
####lllbbbbbb####"0A" [Note]
where;
#### = 4 pound signs
lll = length of prefix
bbbbbb = length of bulletin
"0A" = ASCII line feed
Example
Content ####018000263#### SIAU40 AMMC 261500 RRA AAXX 26154 94129 35/// /1305 10281 30066 40089 57008= 94289 35/// /1213 10286 30086 40095 57009= 94307 35/// /1503 10254 30111 40151 52004= 94371 35/// /1115 10279 30108 40114 57010= 94379 35/// /0000 10281 30108 40117 57013= ####018000093#### SIIN23 DEMS 261500 RRA AAXX 26154 43063 32996 02706 10280 20134 39456 40067 333 59001= |
Note: For potentually large bulletins, such as large GRIB or BUFR model derived products it was necessary to develop a new OPTION 2 to allow large capacity FLAG FIELD (option 2) form to be used. |
Portal Service Establishment
Establishing this account requires an initial exchange of information between the sending center and the RTH. Contact RTH Washington by email to request an account. |
US
Dept of Commerce National Oceanic and Atmospheric Administration National Weather Service Office of the Chief Information Officer (OCIO) 1325 East West Highway Silver Spring, MD 20910 Page last modified: April 27, 2009 Page Author: Jim Gilleland |
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