VALUE (Octet 10) |
MEANING | CONTENTS (Octets 11 & 12) |
ABBREV | |
---|---|---|---|---|
|
special codes, See Table 3a |
|
|
|
|
isobaric level |
(2 octets) |
|
|
|
layer between two isobaric levels |
|
|
|
|
mean sea level |
|
|
|
|
Specified altitude above MSL |
|
|
|
|
layer between two specified altitudes above MSL |
(hm) |
(hm) |
|
|
specified height level above ground |
(2 octets) |
|
|
|
layer between two specified height levels above ground |
(hm) |
(hm) |
|
|
sigma level |
(2 octets) |
|
|
|
layer between two sigma levels |
|
|
|
|
Hybrid level |
(2 octets) |
|
|
|
layer between two hybrid levels |
|
|
|
|
depth below land surface |
(2 octets) |
|
|
|
layer between two depths below land surface |
|
|
|
|
isentropic (theta) level |
(2 octets) |
|
|
|
layer between two isentropic levels |
|
|
|
|
level at specified pressure difference from ground to level |
(2 octets) |
|
|
|
layer between two levels at specified pressure difference from ground to level |
|
|
|
|
potential vorticity(pv) surface |
(2 octets) |
|
|
|
NAM level |
(2 octets) |
|
|
|
layer between two NAM levels |
|
|
|
|
layer between two isobaric surfaces (high precision) |
|
|
|
|
specified height level above ground (high precision) |
(2 octets) |
|
|
|
isobaric level |
(2 octets) |
|
|
|
layer between two sigma levels (high precision) |
|
|
|
|
layer between two isobaric surfaces (mixed precision) |
|
|
|
|
depth below sea level |
(2 octets) |
|
|
|
entire atmosphere (considered as a single layer) |
(2 octets) |
|
|
|
entire ocean (considered as a single layer) |
(2 octets) |
|
Note: | The numbering allows for additions within this framework: |
100-119 normal precision 120-139 high precision 140-159 mixed precision |
VALUE | LEVEL | ABBREV |
---|---|---|
|
Reserved |
|
|
Ground or water surface |
|
|
Cloud base level |
|
|
Cloud top level |
|
|
Level of 0 deg (C) isotherm |
|
|
Level of adiabatic condensation lifted from the surface |
|
|
Maximum wind level |
|
|
Tropopause |
|
|
Nominal top of atmosphere |
|
|
Sea bottom |
|
|
reserved |
|
|
Isothermal level (temperature in 1/100 K in octets 11 and 12) |
|
|
reserved |
|
NCEP Special Levels & Layers: | ||
|
Highest tropospheric freezing level |
|
|
Grid scale cloud bottom level |
|
|
Grid scale cloud top level |
|
|
Boundary layer cloud bottom level |
|
|
Boundary layer cloud top level |
|
|
Boundary layer cloud layer |
|
|
Low cloud bottom level |
|
|
Low cloud top level |
|
|
Low cloud layer |
|
215 |
Cloud
ceiling |
CEIL |
216 | Cumulonimbus Base (m) | CBB |
217 | Cumulonimbus Top (m) | CBT |
220 |
Planetary Boundary Layer (derived from Richardson number) | PBLRI |
|
Middle cloud bottom level |
|
|
Middle cloud top level |
|
|
Middle cloud layer |
|
|
High cloud bottom level |
|
|
High cloud top level |
|
|
High cloud layer |
|
235 |
Ocean Isotherm Level (1/10 deg C) | OITL |
236 |
Layer
between two depths below ocean surface depth of upper surface
(dam) (octet 11)
depth of lower surface
(dam) (octet 12)
|
OLYR |
237 |
Bottom of Ocean Mixed Layer (m) | OBML |
238 |
Bottom of Ocean Isothermal Layer (m) | OBIL |
239 |
Layer Ocean Surface and 26C Ocean Isothermal Level | S26CY |
240 | Ocean Mixed Layer | OMXL |
241 | Ordered Sequence of Data | OSEQD |
|
Convective cloud bottom level |
|
|
Convective cloud top level |
|
|
Convective cloud layer |
|
245 |
Lowest
level of the wet bulb zero |
LLTW |
|
Maximum equivalent potential temperature level |
|
|
Equilibrium level |
|
|
Shallow convective cloud bottom level |
|
|
Shallow convective cloud top level |
|
|
Deep convective cloud bottom level |
|
|
Deep convective cloud top level |
|
253 |
Lowest bottom level of supercooled liquid water layer | LBLSW |
254 |
Highest top level of supercooled liquid water layer | HTLSW |