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Lapse rate
The lapse rate is the rate at which an atmospheric variable (usually temperature) decreases with altitude. It is expressed as the negative ratio of the temperature change and the altitude change, thus:
where γ = lapse rate in °C/km, T = temperature in degrees C, and z = altitude in kilometres, where the level 2 is at a higher altitude than level 1
Also see Dry adiabatic lapse rate.
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10-26-2009 08:16:03
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The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details