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

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 - C_b significant layer
2	Second non - C_b significant layer
3	Third non - C_b 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	Expected error
15	Representative error
16-30	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
2	Long-wave infrared
3	Medium-wave infrared
4	Short-wave infrared
5	M
6	I
7	Day/Night
8-62	Reserved
63	Missing value

0 08 080

Qualifier for GTSPP^* quality flag

Code figure
0	Total water pressure profile
1	Total water temperature profile
2	Total water salinity profile
3	Total water conductivity profile
4	Total water depth
5-9	Reserved
10	Water pressure at a level
11	Water temperature at a level
12	Salinity at a level
13	Water depth at a level
14-19	Reserved
20	Position
21-62	Reserved
63	Missing value

^* GTSPP = Global Temperature Salinity Profile Program

0 08 081

Type of equipment

Code figure
0	Sensor
1	Transmitter
2	Receiver
3	Observing platform
4-62	Reserved
63	Missing value

0 08 082

Modification of sensor height to another value

Code figure
0	Sensor height is not modified
1	Sensor height is modified to standard level
2-6	Reserved
7	Missing value

Note: If 08 8 082 = 1, the standard level is indicated by the class 7 descriptor, which immediately follows.
It is possible to indicate the real height of the sensor by preceding the descriptor by the relevant class 7 descriptor.

_________________

Bit No.
1	0000 UTC
2	0600 UTC
3	1200 UTC
4	1800 UTC
5	Other hours
All 6	Missing value