| Bit No. |
Flag Value |
Description |
Unit |
Status |
| 0 |
|
Visibility |
m |
Operational |
| 1 |
|
Albedo |
% |
Operational |
| 2 |
|
Thunderstorm probability |
% |
Operational |
| 3 |
|
Mixed layer depth |
m |
Operational |
| 4 |
|
Volcanic ash |
Code/Flag Table 4.206 |
Operational |
| 5 |
|
Icing top |
m |
Operational |
| 6 |
|
Icing base |
m |
Operational |
| 7 |
|
Icing |
Code/Flag Table 4.207 |
Operational |
| 8 |
|
Turbulence top |
m |
Operational |
| 9 |
|
Turbulence base |
m |
Operational |
| 10 |
|
Turbulence |
Code/Flag Table 4.208 |
Operational |
| 11 |
|
Turbulent kinetic energy |
J/kg |
Operational |
| 12 |
|
Planetary boundary-layer regime |
Code/Flag Table 4.209 |
Operational |
| 13 |
|
Contrail intensity |
Code/Flag Table 4.210 |
Operational |
| 14 |
|
Contrail engine type |
Code/Flag Table 4.211 |
Operational |
| 15 |
|
Contrail top |
m |
Operational |
| 16 |
|
Contrail base |
m |
Operational |
| 17 |
|
Maximum snow albedo |
% |
Deprecated |
| 18 |
|
Snow free albedo |
% |
Operational |
| 19 |
|
Snow albedo |
% |
Operational |
| 20 |
|
Icing |
% |
Operational |
| 21 |
|
In-cloud turbulence |
% |
Operational |
| 22 |
|
Clear air turbulence (CAT) |
% |
Operational |
| 23 |
|
Supercooled large droplet probability |
% |
Operational |
| 24 |
|
Convective turbulent kinetic energy |
J/kg |
Operational |
| 25 |
|
Weather |
Code/Flag Table 4.225 |
Operational |
| 26 |
|
Convective outlook |
Code/Flag Table 4.224 |
Operational |
| 27 |
|
Icing scenario |
Code/Flag Table 4.227 |
Operational |
| 28 |
|
Mountain wave turbulence (eddy dissipation rate) |
m2/3 s-1 |
Operational |
| 29 |
|
Clear air turbulence (CAT) |
m2/3 s-1 |
Operational |
| 30 |
|
Eddy dissipation parameter |
m2/3 s-1 |
Operational |
| 31 |
|
Maximum of eddy dissipation parameter in layer |
m2/3 s-1 |
Operational |
| 32 |
|
Highest freezing level |
m |
Operational |
| 33 |
|
Visibility through liquid fog |
m |
Operational |
| 34 |
|
Visibility through ice fog |
m |
Operational |
| 35 |
|
Visibility through blowing snow |
m |
Operational |
| 36 |
|
Presence of snow squalls |
Code/Flag Table 4.222 |
Operational |
| 37 |
|
Icing severity |
Code/Flag Table 4.228 |
Operational |
| 38 |
|
Sky transparency index |
Code/Flag Table 4.214 |
Operational |
| 39 |
|
Seeing index |
Code/Flag Table 4.214 |
Operational |
| 40 |
|
Snow level |
m |
Operational |
| 41 |
|
Duct base height |
m |
Operational |
| 42 |
|
Trapping layer base height |
m |
Operational |
| 43 |
|
Trapping layer top height |
m |
Operational |
| 44 |
|
Mean vertical gradient of refractivity inside trapping layer |
m-1 |
Operational |
| 45 |
|
Minimum vertical gradient of refractivity inside trapping layer |
m-1 |
Operational |
| 46 |
|
Net radiation flux |
W m-2 |
Operational |
| 47 |
|
Global irradiance on tilted surfaces |
W m-2 |
Operational |
| 48 |
|
Top of persistent contrails |
m |
Operational |
| 49 |
|
Base of persistent contrails |
m |
Operational |
| 50 |
|
Convectively-induced turbulence (CIT) (eddy dissipation rate) |
m2/3 s-1 |
Operational |
| 51 |
|
Visibility through precipitation |
m |
Operational |
| 52 |
|
Hail kinetic energy flux |
J m-2 s-1 |
Operational |
| 53-191 |
|
Reserved |
|
Operational |
| 192-254 |
|
Reserved for local use |
|
Operational |
| 255 |
|
Missing |
|
Operational |