Code figure |
Description |
Unit |
Status |
0 |
Reserved |
|
Operational |
1 |
Ground or water surface |
- |
Operational |
2 |
Cloud base level |
- |
Operational |
3 |
Level of cloud tops |
- |
Operational |
4 |
Level of 0°C isotherm |
- |
Operational |
5 |
Level of adiabatic condensation lifted from the surface |
- |
Operational |
6 |
Maximum wind level |
- |
Operational |
7 |
Tropopause |
- |
Operational |
8 |
Nominal top of the atmosphere |
- |
Operational |
9 |
Sea bottom |
- |
Operational |
10 |
Entire atmosphere |
- |
Operational |
11 |
Cumulonimbus (CB) base |
m |
Operational |
12 |
Cumulonimbus (CB) top |
m |
Operational |
13-19 |
Reserved |
|
Operational |
20 |
Isothermal level |
K |
Operational |
21-99 |
Reserved |
|
Operational |
100 |
Isobaric surface |
Pa |
Operational |
101 |
Mean sea level |
|
Operational |
102 |
Specific altitude above mean sea level |
m |
Operational |
103 |
Specified height level above ground |
m |
Operational |
104 |
Sigma level |
"sigma" value |
Operational |
105 |
Hybrid level |
- |
Operational |
106 |
Depth below land surface |
m |
Operational |
107 |
Isentropic (theta) level |
K |
Operational |
108 |
Level at specified pressure difference from ground to level |
Pa |
Operational |
109 |
Potential vorticity surface |
K m2 kg-1 s-1 |
Operational |
110 |
Reserved |
|
Operational |
111 |
Eta level |
- |
Operational |
112 |
Reserved |
|
Operational |
113 |
Logarithmic hybrid level |
- |
Operational |
114 |
Snow level |
Numeric |
Operational |
115-116 |
Reserved |
|
Operational |
117 |
Mixed layer depth |
m |
Operational |
118 |
Hybrid height level |
- |
Operational |
119 |
Hybrid pressure level |
- |
Operational |
120-149 |
Reserved |
|
Operational |
150 |
Generalized vertical height coordinate |
|
Operational |
151-159 |
Reserved |
|
Operational |
160 |
Depth below sea level |
m |
Operational |
161 |
Depth below water surface |
m |
Operational |
162 |
Lake or river bottom |
- |
Operational |
163 |
Bottom of sediment layer |
- |
Operational |
164 |
Bottom of thermally active sediment layer |
- |
Operational |
165 |
Bottom of sediment layer penetrated by thermal wave |
- |
Operational |
166 |
Mixing layer |
- |
Operational |
167-191 |
Reserved |
|
Operational |
192-254 |
Reserved for local use |
|
Operational |
255 |
Missing |
|
Operational |