| Bit No. |
Flag Value |
Description |
Unit |
Status |
| 0 |
|
Pressure |
Pa |
Operational |
| 1 |
|
Pressure reduced to MSL |
Pa |
Operational |
| 2 |
|
Pressure tendency |
Pa/s |
Operational |
| 3 |
|
ICAO Standard Atmosphere Reference Height |
m |
Operational |
| 4 |
|
Geopotential |
m2 s-2 |
Operational |
| 5 |
|
Geopotential height |
gpm |
Operational |
| 6 |
|
Geometric height |
m |
Operational |
| 7 |
|
Standard deviation of height |
m |
Operational |
| 8 |
|
Pressure anomaly |
Pa |
Operational |
| 9 |
|
Geopotential height anomaly |
gpm |
Operational |
| 10 |
|
Density |
kg m-3 |
Operational |
| 11 |
|
Altimeter setting |
Pa |
Operational |
| 12 |
|
Thickness |
m |
Operational |
| 13 |
|
Pressure altitude |
m |
Operational |
| 14 |
|
Density altitude |
m |
Operational |
| 15 |
|
5-wave geopotential height |
gpm |
Operational |
| 16 |
|
Zonal flux of gravity wave stress |
N m-2 |
Operational |
| 17 |
|
Meridional flux of gravity wave stress |
N m-2 |
Operational |
| 18 |
|
Planetary boundary layer height |
m |
Operational |
| 19 |
|
5-wave geopotential height anomaly |
gpm |
Operational |
| 20 |
|
Standard deviation of subgrid-scale orography |
m |
Operational |
| 21 |
|
Angle of subgrid-scale orography |
rad |
Operational |
| 22 |
|
Slope of subgrid-scale orography |
Numeric |
Operational |
| 23 |
|
Gravity wave dissipation |
W m-2 |
Operational |
| 24 |
|
Anisotropy of subgrid-scale orography |
Numeric |
Operational |
| 25 |
|
Natural logarithm of pressure in Pa |
Numeric |
Operational |
| 26 |
|
Exner pressure |
Numeric |
Operational |
| 27 |
|
Updraught mass flux |
kg m-2 s-1 |
Operational |
| 28 |
|
Downdraught mass flux |
kg m-2 s-1 |
Operational |
| 29 |
|
Updraught detrainment rate |
kg m-3 s-1 |
Operational |
| 30 |
|
Downdraught detrainment rate |
kg m-3 s-1 |
Operational |
| 31 |
|
Unbalanced component of logarithm of surface pressure |
- |
Operational |
| 32 |
|
Saturation water vapour pressure |
Pa |
Operational |
| 33 |
|
Geometric altitude above mean sea level |
m |
Operational |
| 34 |
|
Geometric height above ground level |
m |
Operational |
| 35 |
|
Column integrated divergence of total mass flux |
kg m-2 s-1 |
Operational |
| 36 |
|
Column integrated eastward total mass flux |
kg m-1 s-1 |
Operational |
| 37 |
|
Column integrated northward total mass flux |
kg m-1 s-1 |
Operational |
| 38 |
|
Standard deviation of filtered subgrid orography |
m |
Operational |
| 39 |
|
Column integrated mass of atmosphere |
kg m-2 |
Operational |
| 40 |
|
Column integrated eastward geopotential flux |
W m-1 |
Operational |
| 41 |
|
Column integrated northward geopotential flux |
W m-1 |
Operational |
| 42 |
|
Column integrated divergence of water geopotential flux |
W m-2 |
Operational |
| 43 |
|
Column integrated divergence of geopotential flux |
W m-2 |
Operational |
| 44 |
|
Height of zero-degree wet-bulb temperature |
m |
Operational |
| 45 |
|
Height of one-degree wet-bulb temperature |
m |
Operational |
| 46 |
|
Pressure departure from hydrostatic state |
Pa |
Operational |
| 47-191 |
|
Reserved |
|
Operational |
| 192-254 |
|
Reserved for local use |
|
Operational |
| 255 |
|
Missing |
|
Operational |