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| − | | + | #REDIRECT [[adiabatic lapse rate]] |
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| − | == moist-adiabatic lapse rate ==
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| − | <div class="definition"><div class="short_definition">(''Or'' saturation-adiabatic lapse rate.) The rate of decrease of [[temperature]] with height along a [[moist adiabat]].</div><br/> <div class="paragraph">It is given approximately by Γ<sub>''m''</sub> in the following: <div class="display-formula"><blockquote>[[File:ams2001glos-Me16.gif|link=|center|ams2001glos-Me16]]</blockquote></div> where ''g'' is gravitational [[acceleration]], ''c''<sub>''pd''</sub> is the [[specific heat]] at constant [[pressure]] of [[dry air]], ''r''<sub>''v''</sub> is the [[mixing ratio]] of [[water vapor]], ''L''<sub>''v''</sub> is the [[latent heat]] of [[vaporization]], ''R'' is the [[gas constant]] for dry air, ε is the ratio of the gas constants for dry air and water vapor, and ''T'' is temperature. This expression is an approximation to both the reversible moist [[adiabatic lapse rate]] and the [[pseudoadiabatic lapse rate]], with more accurate expressions given under those definitions. When most of the condensed water is frozen, this may be replaced by a similar expression but with ''L''<sub>''v''</sub> replaced by the latent heat of [[sublimation]].</div><br/> </div>
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