GRIB2 - TABLE 3.15

PHYSICAL MEANING OF
VERTICAL COORDINATE

In Section 3, Octet 63
(For grid templates 100)

Revised 04/04/2013
Red text depicts changes made since 12/16/2011



Code Figure Meaning Unit
0-19
Reserved
20
Temperature
K
21-99
Reserved
100
Pressure
Pa
101
Pressure deviation from mean sea level
Pa
102
Altitude above mean sea level
m
103
Height above ground (see note 1)
m
104
Sigma coordinate

105
Hybrid coordinate

106
Depth below land surface
m
107
Potential temperature (theta)
K
108
Pressure deviation from ground to level
Pa
109
Potential vorticity
K m-2 kg-1 s-1
110
Geometric height
m
111
Eta coordinate (see note 2)

112
Geopotential height
gpm
113
Logarithmic hybrid coordinate

114-159 Reserved
160
Depth below sea level
m
161-191
Reserved
192-254
Reserved for Local Use

255
Missing



Notes:

1.  Negative values associate to this coordinate will indicate depth below ground surface.  If values are all below the surface, use of entry 106 is recommended with positive coordinate values instead.

2.  The Eta vertical coordinate system involves normalizing the pressure at some point on a specific level by the mean sea level pressure at that point.

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