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Geopotential Height
upper air station reports
The value highlighted in yellow located
in the upper right corner (in the diagram above) represents the
geopotential height of a given
pressure surface in
meters (as reported by weather balloons).
Geopotential Height approximates the actual height of a pressure
surface
above mean sea-level.
Therefore, for the example given above, the height of the pressure
surface on which the observation was taken is 5800 meters.
When a collection of geopotential height reports are contoured
on a given pressure surface, we are able to identify upper air
troughs and
ridges, which are very important influences
on surface weather conditions.
dew point
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wind barbs
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