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NCEP distributes output from the North American Mesoscale (NAM) model Downscaled Numerical Guidance (DNG) grids via NOAAPORT and the SBN with the following WMO headers:
T1T2A1A2ii
CCCC
where:
CCCC = KWBE
T1 = L or M, depending on analysis/forecast time
| T2= |
A - dew point temperature, cloud cover, wind speed/direction, or wind gust speed |
|
D - probability of precipitation (3,6,12 hourly) |
|
E - total precipitation (3,6,12 hourly) |
|
H - boundary layer height or wet bulb zero height |
|
K - visibility |
|
R - minimum/maximum relative humidity (3, 12 hourly) |
|
S - snow dept (3, 6 hourly) |
|
T - temperature or minimum/maximum temperature (3, 12 hourly) |
|
U - u component of wind |
|
V - v component of wind |
|
Z - simulated reflectivity |
| A1 = |
A - Alaska 6 km |
|
C - Puerto Rico |
|
H - Hawaii |
|
I - CONUS 2.5 km |
|
K - Alaska 3 km |
|
M - CONUS 5 km |
The T1 and A2 combination specifies the analysis/forecast time (ranging from 00 to 84 hours)
| T1 |
A2 |
| L |
A=00, B=06, C=12, D=18, E=24, F=30, G=36, H=42, I=48, J=60, K=72, L=84 |
| M |
B=03, E=09, H=15, K=21, L=27,O=33, P=39, Q=45, Q=51, M=54, S=57, N=66, T=78, Z=63,69,75,or 81 |
| ii = |
98 - air properties at the surface of the Earth |
|
86 - boundary layer height |
|
00 - wet bulb zero height |
|
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