View source for Pseudoadiabatic lapse rate



{{TermHeader}}
{{TermSearch}}

<div class="termentry">
  <div class="term">
== pseudoadiabatic lapse rate ==
  </div>

<div class="definition"><div class="short_definition">The rate of decrease of [[temperature]] with height of a [[parcel]] undergoing  a [[pseudoadiabatic process]].</div><br/> <div class="paragraph">It is given by  <div class="display-formula"><blockquote>[[File:ams2001glos-Pe58.gif|link=|center|ams2001glos-Pe58]]</blockquote></div> where &#x00393;<sub>''ps''</sub> is the pseudoadiabatic lapse rate, ''g'' is gravitational [[acceleration]], ''r''<sub>''v''</sub> is the [[mixing ratio]]  of [[water vapor]], ''c''<sub>''pd''</sub> and ''c''<sub>''pv''</sub> are the [[specific heats]] at constant [[pressure]] of [[dry air]] and water vapor,  ''L''<sub>''v''</sub> is the [[latent heat]] of [[vaporization]], ''R'' is the dry air gas constant, &#x003b5; &asymp; 0.62 is the ratio of the  gas constants of dry air and water vapor, and ''T'' is temperature. The above [[lapse rate]] is usually  within 1 percent of those shown under [[moist-adiabatic lapse rate]] and [[reversible moist-adiabatic process|reversible moist-adiabatic  lapse rate]].</div><br/> </div>
</div>

{{TermIndex}}
{{TermFooter}}

[[Category:Terms_P]]