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Explanation of Data Designators T1T2A1A2ii CCCC
TABLE C6 Data type designator A1 (when T1 = I or J)
Instructions for the proper application of the level designators

 

(1)  The designators specified in this table should be used to the greatest extent possible to indicate the type of data contained within the body of the BUFR bulletin.
(2) Where more than one data type is contained in the bulletin, the designators for only one of the data types should be used.
(3) When the table does not contain a suitable designator for the data types, an alphabetic designator which is not assigned in the table should be introduced and the WMO Secretariat notified.
(4) Content of ISMx, ISIx, ISNx messages corresponds to the content of traditional SYNOP messages SMxx, SIxx, SNxx.
(5) Category/Subcategory = 000/000 identifies SYNOP data from 01, 02, 04, 05, 07, 08, 10, 11, 13, ..UTC). Thus SNxx in traditional SYNOP corresponds to ISNx in BUFR.
(6) Designators A1 for T1T2 already used for satellite data (e.g. IUC, IUR, IUT) are not allocated and reserved for future allocations, pending the allocation of A1 for T1T2 = IN (satellite data).

 

T1 = I - Observational data (Binary coded) - BUFR
T2 = N - Satellite data

 

T1 T2 A1 ii Data type TAC correspondence Data Category Sub Category
(Common Table C13)
I N A
Satellite data (AMSUA)
003003
I N B
Satellite data (AMSUB)
003004
I N H
Satellite data (HIRS)
003005
I N M
Satellite data (MHS)
003006

 

T1 = I - Observational data (Binary coded) - BUFR
T2 = O - Oceanographic/limnographic (water properties)

 

T1 T2 A1 ii Data type TAC correspondence Data Category Sub Category
(Common Table C13)
I O B
Buoy observations BUOY 001/025
I O I
Sea ice

I O P
Sub-surface profiling floats TESAC 031/004
I O R
Sea surface observations TRACKOB 031/001
I O S
Sea surface and below soundings BATHY, TESAC 031/005
I O T
Sea surface temperature

I O W
Sea surface waves WAVEOB 031/002
I O X
Other sea environmetal

I O Z   Deep ocean tsunameter   031/007

 

T1 = I - Observational data (Binary coded) - BUFR
T2 = P - Pictorial

 

T1 T2 A1 ii Data type TAC correspondence Data Category Sub Category
(Common Table C13)
I P C
Radar composite imagery data

I P I
Satellite imagery data

I P R
Radar imagery data

I P X
Not defined

 

T1 = I - Observational data (Binary coded) - BUFR
T2 = S - Surface/sea level

 

T1 T2 A1 ii Data type TAC correspondence Data Category Sub Category
(Common Table C13)
I S A 01-29 Routinely scheduled observations for distribution from automatic (fixed or mobile) land stations (e.g. 0000, 0100, … or 0220, 0240, 0300, …, or 0715, 0745, ... UTC) n/a 000/006
I S A 30-59 N-minute observations from automatic (fixed or mobile) land stations n/a 000/007
I S B
Radar reports (parts A and B) RADOB 006/003
I S C 01-45 Climatic observations from land stations CLIMAT 000/020
I S C 46-59 Climatic observations from marine stations CLIMAT SHIP 001/020
I S D
Radiological observation RADREP 010/001
I S E
Measurement of surface ozone   008/000
I S F
Source of atmospherics SFAZI, SFLOC, SFAZU 000/030
I S I 01-45 Intermediate synoptic observations from fixed land stations SYNOP (SIxx) 000/001 000/051
I S I 46-59 Intermediate synoptic observations from mobile land stations SYNOP MOBIL 000/004
I S M 01-45 Main synoptic observations from fixed land stations SYNOP (SMxx) 000/002 000/052
I S M 46-59 Main synoptic observations from mobile land stations SYNOP MOBIL 000/005
I S N 01-45 Synoptic observations from fixed land stations at non-standard time (i.e. 01, 02, 04, 05, ... UTC) SYNOP (SNxx) 000/000 000/050
I S N 46-59 Synoptic observations from mobile land stations at non-standard time (i.e. 01, 02, 04, 05, ... UTC) SYNOP MOBIL 000/003
I S R
Hydrologic reports HYDRA 000/040
I S S 01-19 Synoptic observations from marine stations SHIP 001/000
I S S 20-39 One-hour observations from automatic marine stations n/a 001/006
I S S 40-59 N-minute observations from automatic marine stations n/a 001/007
I S T 01-19 Tide gauge observations n/a 001/030
I S T 20-39 Observed water level time series n/a 001/031
I S V
Special aeronautical observations (SPECI) SPECI 000/011
I S W
Aviation routine weather observations (METAR) METAR 000/010
I S X
Other surface data IAC, IAC FLEET

 

T1 = I - Observational data (Binary coded) - BUFR
T2 = T - Text (plain language information)

 

T1 T2 A1 ii Data type TAC correspondence Data Category Sub Category
(Common Table C13)
I T A
Administrative message

I T B
Service message

I T R
Request for data (inclusive of type)

I T X
Other text messages of information

 

T1 = I - Observational data (Binary coded) - BUFR
T2 = U - Upper air

 

T1 T2 A1 ii Data type TAC correspondence Data Category Sub Category
(Common Table C13)
I U A
Single level aircraft reports (automatic) AMDAR 004/000
I U A
Single level aircraft reports (manual) AIREP/PIREP 004/001
I U B
Single level balloon reports n/a
I U C
(used for single level satellite-derived reports – see Note 3) SAREP/SATOB 005/000
I U D
Dropsonde/Dropwindsondes TEMP DROP 002/007
I U E
Ozone vertical sounding n/a 008/001
I U I
Dispersal and transport analysis n/a 009/000
I U J 01-19 Upper wind from fixed land stations (entire sounding) PILOT (parts A, B, C, D) 002/001
I U J 20-39 Upper wind from mobile land stations (entire sounding) PILOT MOBIL (parts A, B, C, D) 002/003
I U J 40-59 Upper wind from marine stations (entire sounding) PILOT SHIP (parts A, B, C, D) 002/002
I U K 01-19 Radio soundings from fixed land stations (up to 100 hPa) TEMP (parts A, B) 002/004
I U K 20-39 Radio soundings from mobile land stations (up to 100 hPa) TEMP MOBIL (parts A, B) 002/006
I U K 40-59 Radio soundings from marine stations (up to 100 hPa) TEMP SHIP (parts A, B) 002/005
I U L   Total ozone   008/002
I U M
Model derived sondes

I U N
Rocketsondes

I U O
Profiles of aircraft observations in ascending /descending AMDAR 002/020
I U P
Profilers PILOT 002/010
I U Q
RASS temperature profilers TEMP 002/011
I U R
(used for radiance data – see Note 3)

I U S 01-19 Radiosondes/pibal reports from fixed land stations (entire sounding) TEMP (parts A, B, C, D) 002/004
I U S 20-39 Radio soundings from mobile land stations (entire sounding) TEMP MOBIL (parts A, B, C, D) 002/006
I U S 40-59 Radio soundings from marine stations (entire sounding) TEMP SHIP (parts A, B, C, D) 002/005
I U T
(used for satellite-derived sondes – see Note 3) SATEM, SARAD, SATOB
I U U 01-45 Monthly statistics of data from upper-air stations CLIMAT TEMP 002/025
I U U 46-59 Monthly statistics of data from marine stations CLIMAT TEMP, SHIP 002/026
I U W 01-19 Upper wind from fixed land stations (up to 100 hPa) PILOT (parts A, B) 002/001
I U W 20-39 Upper wind from mobile land stations (up to 100 hPa) PILOT MOBIL (parts A, B) 002/003
I U W 40-59 Upper wind from marine stations (up to 100 hPa) PILOT SHIP (parts A, B) 002/002
I U X
Other upper air reports

 

T1 = J - Forecast information (Binary coded) - BUFR
T2 = O - Oceanographic/limnographic (water properties)

 

T1 T2 A1 ii Data type TAC correspondence Data Category Sub Category
(Common Table C13)
J O I
Sea ice

J O S
Sea surface and below soundings

J O T
Sea surface temperature

J O W
Sea surface waves

J O X
Other sea environmetal data

 

T1 = J - Forecast information (Binary coded) - BUFR
T2 = S - Surface/sea level

 

T1 T2 A1 ii Data type TAC correspondence Data Category Sub Category
(Common Table C13)
J S A
Surface area forecast (e.g. airways)

J S D
Radiological forecast RADOF
J S M
Surface forecasts (e.g. MOS)

J S O
Maritime forecast MAFOR
J S P
Forecast amendments (airways)

J S R
Hydrologic forecast HYFOR
J S S
Forecast amendments (TAF)

J S T
Aerodrome forecast (TAF)

J S X
Other surface forecasts

 

T1 = J - Forecast information (Binary coded) - BUFR
T2 = T - Text (plain language information)

 

T1 T2 A1 ii Data type TAC correspondence Data Category Sub Category
(Common Table C13)
J T E
Tsunami

J T H
Hurricane, typhoon, tropical storm warning

J T S
Severe weather, SIGMET

J T T
Tornado warning

J T X
Other warnings

 

T1 = J - Forecast information (Binary coded) - BUFR
T2 = U - Upper air

 

T1 T2 A1 ii Data type TAC correspondence Data Category Sub Category
(Common Table C13)
J U A
Forecast at single levels

J U B   Binary coded SIGWX, Embeded Cumulonimbus    
J U C
Binary coded SIGWX, Clear air turbulence

J U F
Binary coded SIGWX, Fronts

J U N
Binary coded SIGWX, Other SIGWX parameters

J U O
Binary coded SIGWX, Turbulence

J U S
Forecast soundings

J U T
Binary coded SIGWX, Icing/Tropopause

J U V
Binary coded SIGWX, Tropical storms, sandstorms, volcanoes

J U W
Binary coded SIGWX, High-level winds

J U X
Other upper air forecasts

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Telecommunications
Abbreaviated Heading
TTAAii CCCC
Symbolic Structure explained
Table Definitions
Table A
Table B1
Table B2
Table B3
Table B4
Table B5
Table B6
Table C1
Table C2
Table C3
Table C4
Table C5
Table C6
Table C7
Table D1
Table D2
Table D3
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