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re: [at-l] temp/alt?

Subject: re: [at-l] temp/alt?
From: Tom Greene <tbgreene@blanca.uccs.edu>
Date: Thu, 22 Jan 1998 15:29:23 -0700
Cc: rhymworm@mindspring.com

> Can anybody tell me the number of degrees that the temperature drops for
> every 1000 feet you ascend in the mountains? I know there's some formula.
> Is it every 1000 feet? or a smaller figure?

The numbers I found from digging around in my old pilot books are:

Dry adiabatic lapse rate is 5.4 F / 1000 ft.
Saturated adiabatic lapse rate is 2.0 F / 1000 ft.

It can of course vary quite a bit depending on weather conditions.

                             -Tom
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