Table C6
| 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 |