Thread: intelligent barograph
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Old September 21st 03, 08:29 PM posted to uk.sci.weather
JPG JPG is offline
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Default intelligent barograph
On Sun, 21 Sep 2003 18:37:18 +0100, rnet[dot]co[dot]uk
(Simon Gardner) wrote:

In article ,
(DrKFS) wrote:

Are there barographs available which plot the first derivative of the pressure
with respect to time

I have a German barometer which shows only the first derivative. But it
isn't a barograph.

Not a derivative I know but three hour tendencies can be plotted on a
chart and lines of equal tendency can be drawn - known as isallobars,
IIRC. Isallobaric charts can be useful in predicting the movement of
depressions.

I'm not too sure if rate of change of pressure is all that useful -
presumably it would give a nice pulse when a cold front goes through
but most of the time it would just hover around zero.

JPG


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