ICOADS Web information page (Wednesday, 29-Feb-2012 20:18:54 UTC):
International Maritime Meteorological Tape (IMMT-4) Format (deck 926) (by ESRL)
translation program
Table 1. Field-by-field mapping between the International Maritime Meteorological Tape
(IMMT-4)
format (left columns) and the International Maritime Meteorological Archive
(IMMA-0)
format (right columns). Mappings of fields configurations between IMMT and IMMA are direct (no transformation) except as listed below this table for fields marked with an asterisk "*" (note: preliminary information, under development).
IMMT-4 | * | IMMA-0
|
---|
| |
| | * |
| | |
| | |
| | |
| | |
| | |
| | * |
| | * |
| | * |
| | * |
| | |
| | * |
| | * |
| | * |
| | |
| | * |
| | |
| | * |
| | |
| | * |
| | |
| | |
| | |
| | * |
| | * |
| | * |
| | * |
| | * |
| | |
| | |
| | |
| | |
| | |
| | * |
| | |
| | |
| | |
| | |
| | |
| | |
| | * |
| | |
| | |
| | | (field not presently mapped)
| | |
| | |
| | |
| | |
| | |
| | * |
| | |
| | |
| | |
| | |
| | |
| | * |
| | |
| | |
| | * |
| | * |
| | * |
| | * |
| | * |
| | |
| | | (field not presently mapped)
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | * |
| |
| | * |
| | |
| | | (field not presently mapped)
| | | (field not presently mapped)
| | | (field not presently mapped)
| | | (field not presently mapped)
| | | (field not presently mapped)
| | | (field not presently mapped)
| | | (field not presently mapped)
| | | (field not presently mapped)
| | | (field not presently mapped)
| | | (field not presently mapped)
| | | (field not presently mapped)
|
*
Following is a list of exceptions, organized by IMMA field name, to a direct mapping (IMMT=IMMA) of individual input IMMT field configurations (on the left) to IMMA output configurations (on the right).
Some outstanding questions in the transformation method are highlighted.
- IT
- "3"="0"
- "4"="1"
- "5"="2"
- LAT
- quadrant 3=negative LAT
- quadrant 5=negative LAT
- LON
- quadrant 5=negative LON[+360.0]
- quadrant 7=negative LON[+360.0]
- HI
- "0"="0"
- "1"="1"
- "2"="1"
- "3"="0"
- VI
- "0"="0"
- "1"="0"
- "2"="1"
- "3"="1"
- H
- "/"="A"
- N
- "/" and blank (assumed missing)=missing
- D
- "00"="361"
- "99"="362"
- tens=tens*10
- WI
- "0"="0"
- "1"="1"
- "3"="3"; related field action: knots=knots*0.51444444444444444444 for both W and RWS
- "4"="4"; related field action: knots=knots*0.51444444444444444444 for both W and RWS
- AT
- sign 1=negative AT
- DPTI
- "0"="0"
- "1"="0"; related field action: negative DPT
- "2"="2"; related field action: negative DPT
- "5"="1"
- "6"="1"; related field action: negative DPT
- "7"="3"; related field action: negative DPT
- SLP
- hundreds<500.0=hundreds+1000.0
- NH
- "/" and blank (assumed missing)=missing
- CL CM CH
- "/"="A"
- SST
- sign 1=negative SST
- SD
- "99"="38"
- OP
- "4"=missing (note: this configuration is not mapped to IMMA, because the meaning of that value changed from IMMT-III to IMMT-IV)
- WBTI
- "0"="0"
- "1"="0"; related field action: negative WBT
- "2"="2"; related field action: negative WBT
- "5"="1"
- "6"="1"; related field action: negative WBT
- "7"="3"; related field action: negative WBT
- SD2
- "99"="38"
- IC1 IC2 IC3 IC4 IC5
- "/"="A"
- SLHH
- sign 1=negative SLHH
- RWD
- "000"="361"
- "999"="362"
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Updated: Feb 29, 2012 20:18:54 UTC
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