CLASS 03-08 WMO CODE/FLAG TABLES ASSOCIATED WITH BUFR TABLE B

 

(Version 16.0.0 – 05/04/2011)

 

Changes awaiting validation by the WMO are in red (last updated by the WMO 05/04/2011)

 

 


Notes:   In developing code tables associated with BUFR/CREX Table B to specify units of elements, the following principles should be applied:

 

(a)   Code tables specifying the units for an element which is defined, in the Manual on Codes, by a single symbolic letter shall be compatible with the relevant existing WMO code tables;

 

(b)   Code tables combining two or more existing WMO code tables to specify the units for an element which is defined, in the Manual on Codes, by a group of symbolic letters shall be compatible with the combined code figures of the relevant group of symbolic letters;

 

(c)   Code tables combining two or more existing WMO code tables to specify the units for an element which is defined, in the Manual on Codes, by different symbolic letters shall be compatible with the code figures of the relevant symbolic letters, with successive tens or hundreds values added, as different symbolic letters appropropriate;

 

(d)   Code tables and flag tables should only be used for reporting qualitative information. Quantitative information should be reported as observed using entries in Table B.  "Data description operators" from Table C should be applied when a "scale change" or "data width change" is required;

 

(e)  Reference to existing specification(s) and code table(s) in the Manual on Codes, with explanation of possible deviations, shall be given in an additional table annexed to the annexed  to the code tables associated with BUFR/CREX Table B.



 

 

 

 


0 04 059

 

Times of observation used to compute the reported mean values

 

Bit No.

 

1

0000 UTC

2

0600 UTC

3

1200 UTC

4

1800 UTC

5

Other hours

All 6

Missing value


 

 

 

 

 

 

 


0 08 001

 
Vertical sounding significance

 

Bit No.

 

1

Surface

2

Standard level

3

Tropopause level

4

Maximum wind level

5

Significant level, temperature and/or relative humidity

6

Significant level, wind

All 7

Missing value


 

 

 

 

 

 

 

0 08 002

 

Vertical significance (surface observations)

 

Code

figure

 

0

Observing rules for base of lowest cloud and cloud types of FM 12SYNOP and FM 13 SHIP apply

1

First non - Cb significant layer

2

Second non - Cb significant layer

3

Third non - Cb significant layer

4

Cumulonimbus layer

5

Ceiling

6

Clouds not detected below the following height(s)

7

Low cloud

8

Middle cloud

9

High cloud

10

Cloud layer with base below the station level and top above the station level

11

Cloud layer with base and top below the station level

12-19

Reserved

20

No clouds detected by the cloud detection system

21

First instrument detected cloud layer

22

Second instrument detected cloud layer

23

Third instrument detected cloud layer

24

Fourth instrument detected cloud layer

25-61

Reserved

62

Value not applicable

63

Missing value


 

 

 

 

 

 

 

0 08 003

 

Vertical significance (satellite observations)

 

Code

figure

 

0

Surface

1

Base of Satellite sounding

2

Cloud top

3

Tropopause

4

Precipitable water

5

Sounding Radiances

6

Mean Temperatures 

7

Ozone 

8

Low cloud

9

Medium cloud

10

High cloud

11-62

Reserved

63

Missing value


 

 

 

 

 

 

 

0 08 004

 

Phase of aircraft flight

 

Code

figure

 

0-1

Reserved

2

Unsteady (UNS)

3

Level flight, routine observation (LVR)

4

Level flight, highest wind encountered (LVW)

5

Ascending (ASC)

6

Descending (DES)

7

Missing value


 

 

 

 

 

 

0 08 005

 

Meteorological attribute significance


Code

figure

 

0

Reserved

1

Storm center

2

Outer limit or edge of storm

3

Location of maximum wind

4

Location of storm in the perturbed analysis

5

Location of storm in the analysis

6-14

Reserved

15

Missing value



 

 

 

 

 

 

 

0 08 006

 

Ozone vertical sounding significance

 

Bit No.

 

1

Surface

2

Standard level

3

Tropopause level

4

Prominent maximum level

5

Prominent minimum level

6

Minimum pressure level

7

Reserved

8

Level of undetermined significance

All 9

Missing value


 

 

 

 

 

 

0 08 007

 

Dimensional significance

 

Code

figure

 

0

Point

1

Line

2

Area

3

Volume

4-14

Reserved

15

Missing value

 

Note:   A consecutive sequence of 2 or more of location coordinates, such as latitude and longitude pairs, defines a line or polygon.  Points shall be joined in the order given in the message.  Any area described will fall left of the drawn boundary in the direction established by the order of the points given in the message.  This definition is for simple non-intersecting polygons without holes.

 

 

 

 

 

 


 

 

 

 

 

 

0 08 008

 

Radiation vertical sounding significance

 

Bit No.

 

1

Surface

2

Standard level

3

Tropopause level

4

Level of beta radiation maximum

5

Level of gamma radiation maximum

6

Minimum pressure level

7

Reserved

8

Level of undetermined significance

All 9

Missing value


 

 

 

 

 

 

 

0 08 009

 

Detailed phase of aircraft flight

 

Code

figure

 

0

Level flight, routine observation, unsteady

1

Level flight, highest wind encountered, unsteady

2

Unsteady (UNS)

3

Level flight, routine observation (LVR)

4

Level flight, highest wind encountered (LVW)

5

Ascending (ASC)

6

Descending (DES)

7

Ascending, observation intervals selected by time increments

8

Ascending, observation intervals selected by time increments, unsteady

9

Ascending, observation intervals selected by pressure increments

10

Ascending, observation intervals selected by pressure increments, unsteady

11

Descending, observation intervals selected by time increments

12

Descending, observation intervals selected by time increments, unsteady

13

Descending, observation intervals selected by pressure increments

14

Descending, observation intervals selected by pressure increments, unsteady

15

Missing value


 

 

 

 

 

 

 

0 08 010

 

Surface qualifier (temperature data)

 

Code

figure

 

0

Reserved

1

Bare soil

2

Bare rock

3

Land grass cover

4

Water (lake, sea)

5

Flood water underneath

6

Snow

7

Ice

8

Runway or road

9

Ship or platform deck in steel

10

Ship or platform deck in wood

11

Ship or platform deck partly covered with rubber mat

12-30

Reserved

31

Missing value


 

 

 

 

 

 

0 08 011

 

Meteorological feature

 

Code

figure

 

0

Quasi-stationary front at the surface

1

Quasi-stationary front above the surface

2

Warm front at the surface

3

Warm front above the surface

4

Cold front at the surface

5

Cold front above the surface

6

Occlusion

7

Instability line

8

Intertropical front

9

Convergence line

10

Jet stream

11

Cloud clear

12

Cloud

13

Turbulence

14

Storm

15

Airframe icing

16

Phenomenon

17

Volcano

18

Atmospherics

19

Reserved

20

Special clouds

21

Thunderstorm

22

Tropical cyclone

23

Mountain wave

24

Duststorm

25

Sandstorm

26-62

Reserved

63

Missing value


 

 

 

 

 

 

 

0 08 012

 

Land/sea qualifier

 

Code

figure

 

0

Land

1

Sea

2

Coast

3

Missing value


 

 

 

 

 

 

 

 

0 08 013

 

Day/night qualifier

 

Code

figure

 

0

Night

1

Day

2

Twilight

3

Missing value


 

 

 

 

 

 

 

 

0 08 014

 

Qualifier for runway visual range

 

Code

figure

 

 

0

10-minute mean value

- normal value

1

10-minute mean value

- above the upper limit for assessments of RVR (P)

2

10-minute mean value

- below the lower limit for assessments of RVR (M)

3

one-minute minimum value

- normal value

4

one-minute minimum value

- above the upper limit for assessments of RVR (P)

5

one-minute minimum value

- below the lower limit for assessments of RVR (M)

6

one-minute maximum value

- normal value

7

one-minute maximum value

- above the upper limit for assessments of RVR (P)

8

one-minute maximum value

- below the lower limit for assessments of RVR (M)

9-14

Reserved

 

15

Missing value

 


 

 

 

 

 

 

 

0 08 016

 

Change qualifier of a trend-type forecast or an aerodrome forecast

 

Code

figure

 

0

NOSIG

1

BECMG

2

TEMPO

3

FM

4-6

Reserved

7

Missing value


 

 

 

 

 

 

 

 

0 08 017

 

Qualifier of the time when the forecast change is expected

 

Code

figure

 

0

FM

1

TL

2

AT

3

Missing value


 

 

 

 

 

 

 

0 08 018

 

SEAWINDS land/ice surface type

 

Bit No.

 

1

Land is present

2

Surface ice map indicates ice is present

3-10

Reserved

11

Ice map data not available

12

Attenuation map data not available

13-16

Reserved

All 17

Missing value


 

 

 

 

 

 

 

 

0 08 021

 

Time significance

 

Code

figure

 

0

Reserved

1

Time series

2

Time averaged

3

Accumulated

4

Forecast

5

Forecast time series

6

Forecast time averaged

7

Forecast accumulated

8

Ensemble mean

9

Ensemble mean time series

10

Ensemble mean time averaged

11

Ensemble mean accumulated

12

Ensemble mean forecast

13

Ensemble mean forecast time series

14

Ensemble mean forecast time averaged

15

Ensemble mean forecast accumulated

16

Analysis

17

Start of phenomenon

18

Radiosonde launch time

19

Start of orbit

20

End of orbit

21

Time of ascending node

22

Time of occurrence of wind shift

23

Monitoring period

24

Agreed time limit for report reception

25

Nominal reporting time

26

Time of last known position

27

First guess

28

Start of scan

29

End of scan or time of ending

30

Time of occurrence

31

Missing value

 

Notes:

 

(1)        "Time averaged" indicates that values are continuously averaged over a period of time.

(2)        "Ensemble mean" indicates that a number of distinct values corresponding to a set of time locations are averaged.

(3)        Time significance must be qualified by appropriate time periods being specified.


 

 

 

 

 

 

 

0 08 023

 

First order statistics

 

Code

figure

 

0

Reserved

1

Reserved

2

Maximum value

3

Minimum value

4

Mean value

5

Median value

6

Modal value

7

Mean absolute error

8

Reserved

9

Best estimate of standard deviation (N-1)

10

Standard deviation (N)

11

Harmonic mean

12

Root-mean-square vector error

13

Root-mean-square

14-31

Reserved

32

Vector mean

33-62

Reserved for local use

63

Missing value

 

Note:  All first order statistics are in the units defined by the original data descriptors.


 

 

 

 

 

 

 

0 08 024

 

Difference statistics

 

Code

figure

 

0

Reserved

1

Reserved

2

Observed minus maximum

3

Observed minus minimum

4

Observed minus mean

5

Observed minus median

6

Observed minus mode

7-10

Reserved

11

Observed minus climatology (anomaly)

12

Observed minus analyzed value

13

Observed minus initialized analysed value

14

Observed minus forecast value

15-20

Reserved

21

Observed minus interpolated value

22

Observed minus hydrostatically calculated value

23-31

Reserved

32-62

Reserved for local use

63

Missing value

 

Notes:

 

(1)   Difference statistics are difference values; they have dimensions the same as the corresponding reported values with respect to units, but assume a range centred on zero (e.g., the difference between reported and analysed values, the difference between reported and forecast values, etc.).

 

(2)   Where observed minus forecast values are represented, the period of the forecast shall be indicated by an appropriate descriptor from class 4.

 

 

 

 

 

 

 

 


 

 

 

 

 

 

 

0 08 025

 

Time difference qualifier

 

Code

figure

 

0

Universal Time Coordinated (UTC) minus Local Standard Time (LST)

1

Local Standard Time

2

Universal Time Coordinated (UTC) minus Satellite clock

3-4

Reserved

5

Time difference from edge of processing segment

6-14

Reserved

15

Missing value


 

 

 

 

 

 


 

0 08 029

 

Surface type

 

Code

figure

 

0

Open ocean or semi-enclosed sea

1

Enclosed sea or lake

2

Continental ice

3

Land

4

Low inland (below sea level)

5

Mix of land and water

6

Mix of land and low inland

7-10

Reserved

11

River

12

Lake

13

Sea

14

Glacier

15

Urban land

16

Rural land

17

Suburban land

18-254

Reserved

255

Missing value


 

 

 

 

 

 

 

 

0 08 033

 

Method of derivation of percentage confidence

 

Code

figure

 

0

Reserved

1

Percentage confidence calculated using cloud fraction

2

Percentage confidence calculated using standard deviation of temperature

3

Percentage confidence calculated using probability of cloud contamination

4

Percentage confidence calculated using normality of distribution

5-126

Reserved

127

Missing value


 

 

 

 

 

 

 

0 08 035

 

Type of monitoring exercise

 

Code
 figure

 

0

Global

1

Regional

2

National

3

Special

4

Bilateral

5

Reserved

6

Reserved

7

Missing value


 

 

 

 

 

 

 

0 08 036

 

Type of center or station performing monitoring

 

Code
figure

 

0

WMO Secretariat

1

WMO

2

RSMC

3

NMC

4

RTH

5

Observing site

6

Other

7

Missing value


 

 

 

 


0 08 040

Flight level significance

Code
figure

 

0

High resolution data sample

1

Within 20 hPa of surface

2

Pressure less than 10 hPa (i.e., 9, 8, 7, etc.) when no other reason applies

3

Base pressure level for stability index

4

Begin doubtful temperature, height data

5

Begin missing data (all ele­ments)

6

Begin missing RH data

7

Begin missing temperature data

8

Highest level reached before balloon descent because of icing or turbulence

9

End doubtful temperature, height data

10

End missing data (all elements)

11

End missing RH data

12

End missing temperature data

13

C crossing(s) for RADAT

14

Standard pressure level

15

Operator added level

16

Operator deleted level

17

Balloon re-ascended beyond previous highest ascent level

18

Significant RH level

19

RH level selection terminated

20

Surface level

21

Significant temperature level

22

Mandatory temperature level

23

Flight termination level

24

Tropopause(s)

25

Aircraft report

26

Interpolated (generated) level

27

Mandatory wind level

28

Significant wind level

29

Maximum wind level

30

Incremental wind level (fixed regional)

31

Incremental height level (gener­ated)

32

Wind termination level

33

Pressure 100 to 110 hPa, when no other reason applies

34

Freezing level base

35

Freezing level top

36

Flight level base

37

Flight level top

38-39

Reserved

40

Significant thermodynamic level (inver­sion)

41

Significant RH level ( per NCDC criteria)

42

Significant temperature level (per NCDC)

43

Begin missing wind data

44

End missing wind data

45-59

Reserved

60

Level of 80-knot isotach above jet

61

Level of 80-knot isotach below jet

62

Other

63

Missing value


 

 

 

 


0 08 041

Data significance

Code
figure

 

0

Parent site

1

Observation site

2

Balloon manufacture date

3

Balloon launch point

4

Surface observation

5

Surface observation displacement from launch point

6

Flight level observation

7

Flight level termination point

8

IFR ceiling and visibility

9

Mountain obscuration

10

Strong surface wind

11

Freezing level

12

Multiple freezing level

13

Instrument manufacture date

14-30

Reserved

31

Missing value










0 08 042

 

Extended vertical sounding significance

 

  

Bit No.

 

1

Surface

2
Standard level
3

Tropopause level

4

Maximum wind level

5

Significant temperature level

6

Significant humidity level

7

Significant wind level

8

Beginning of missing temperature data

9

End of missing temperature data

10

Beginning of missing humidity data

11

End of missing humidity data

12

Beginning of missing wind data

13

End of missing wind data

14

Top of wind sounding

15

Level determined by regional decision

16

Reserved

17

Pressure level originally indicated by height as the vertical coordinate

All 18

Missing value


 

 

 

 

0 08 050

 

Qualifier for number of missing values in calculation of statistic

 

Code
figure

 

0

Reserved

1

Pressure

2

Temperature

3

Extreme temperature

4

Vapor pressure

5

Precipitation

6

Sunshine duration

7

Maximum temperature

8

Minimum temperature

9

Wind

10-14

Reserved

15

Missing value


 

 

 

 

 

 

 

0 08 051

 

Qualifier for number of missing values in calculation of statistic

 

Code

figure

 

1

Pressure

2

Temperature

3

Extreme temperature

4

Vapour pressure

5

Precipitation

6

Sunshine duration

7

Missing value


 

 

 

 

 

 

 

 

0 08 052

 

Condition for which number of days of occurrence follows

 

Code

figure

 

0

Mean wind speed over a 10-minute period observed or recorded equal to or more than 10 m/s or 20 knots

1

Mean wind speed over a 10-minute period observed or recorded equal to or more than 20 m/s or 40 knots

2

Mean wind speed over a 10-minute period observed or recorded equal to or more than 30 m/s or 60 knots

3

Maximum temperature less than 273.15 K

4

Maximum temperature equal to or more than 298.15 K

5

Maximum temperature equal to or more than 303.15 K

6

Maximum temperature equal to or more than 308.15 K

7

Maximum temperature equal to or more than 313.15 K

8

Minimum temperature less than 273.15 K

9

Maximum temperature equal to or more than 273.15 K

10

Precipitation equal to or more than 1.0 kg m-2

11

Precipitation equal to or more than 5.0 kg m-2

12

Precipitation equal to or more than 10.0 kg m-2

13

Precipitation equal to or more than 50.0 kg m-2

14

Precipitation equal to or more than 100.0 kg m-2

15

Precipitation equal to or more than 150.0 kg m-2

16

Snow depth more than 0.00 m

17

Snow depth more than 0.01 m

18

Snow depth more than 0.10 m

19

Snow depth more than 0.50 m

20

Horizontal visibility less than 50 m

21

Horizontal visibility less than 100 m

22

Horizontal visibility less than 1000 m

23

Hail

24

Thunderstorm

25-30

Reserved

31

Missing value


 

 

 

 

 

 

 

0 08 053

 

Day of occurrence qualifier

 

Code

figure

 

0

Value occurred on only one day in the month

1

Value occurred on more than one day in the month

2

Reserved

3

Missing value


 

 

 

 

 

 

 

 

0 08 060

 

Sample scanning mode significance

 

Code

figure

 

0

Reserved

1

Range

2

Azimuth

3

Horizontal

4

Vertical

5

North/South

6

East/West

7-14

Reserved

15

Missing value










0 08 065


Sun-glint indicator

Code

figure

 

0

No sun-glint

1

Sun-glint

2

Reserved

3

Missing value





0 08 066

Semi-transparency indicator

Code

figure

 

0

Opaque

1

Semi-transparent

2

Reserved

3

Missing value


 

 

 

 

 

 

 

0 08 070

 

TOVS/ATOVS product qualifier

 

Code

figure

 

0

Reserved

1

Reserved

2

Earth located instrument counts, calibration coefficients and housekeeping (level 1b)

3

Earth located calibrated radiances (level 1c)

4

Mapped to a common footprint, earth located calibrated radiances (level 1d)

5-14

Reserved

15

Missing value


 

 

 

 

 

 

 

0 08 072

 

Pixel(s) type

 

Code

figure

 

0

Mixed

1

Clear

2

Cloudy

3

Probably clear

4

Probably cloudy

5-6

Reserved

7

Missing value


 

 

 

 

 

 

 

0 08 074

 

Altimeter echo type

 

Code

figure

 

0

Open ocean or semi-enclosed sea

1

Non-ocean like

2

Reserved

3

Missing value


 


 

 

 

 

 

0 08 075

 

Ascending/descending orbit qualifier

 

Code figure

 

0

Ascending orbit

1

Descending orbit

2

Reserved

3

Missing value


 

 

 

 

 

 

 

0 08 076

 

Type of band

      

Code

figure

 

0

Ku

1

C