Evaporative available potential energy: Difference between revisions

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(Abbreviated EAPE.) Analogous to [[convective available potential energy|convective available  potential energy]], except that it is related to the negative [[buoyancy]] associated with evaporative  cooling of liquid water within a sinking cloudy [[air parcel]].<br/> On a [[thermodynamic diagram]], if a line is drawn corresponding to a sinking cloudy air parcel  (follow a [[moist adiabat]] downward while the parcel is cloudy, and then after all liquid water has  evaporated, continue below [[cloud base]] by following a [[dry adiabat]]), the EAPE is the area between  this air-parcel line and a line corresponding to the environmental [[sounding]]. The resulting EAPE  can be related to the [[kinetic energy]] associated with a negatively buoyant, sinking air parcel, and  is useful for determining attributes of [[downdrafts]] and [[downbursts]] from [[thunderstorms]].
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== evaporative available potential energy ==
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<div class="definition"><div class="short_definition">(Abbreviated EAPE.) Analogous to [[convective available  potential energy]], except that it is related to the negative [[buoyancy]] associated with evaporative  cooling of liquid water within a sinking cloudy [[air parcel]].</div><br/> <div class="paragraph">On a [[thermodynamic diagram]], if a line is drawn corresponding to a sinking cloudy air parcel  (follow a [[moist adiabat]] downward while the parcel is cloudy, and then after all liquid water has  evaporated, continue below [[cloud base]] by following a [[dry adiabat]]), the EAPE is the area between  this air-parcel line and a line corresponding to the environmental [[sounding]]. The resulting EAPE  can be related to the [[kinetic energy]] associated with a negatively buoyant, sinking air parcel, and  is useful for determining attributes of [[downdrafts]] and [[downbursts]] from [[thunderstorms]].</div><br/> </div>
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Latest revision as of 07:24, 29 March 2024

(Abbreviated EAPE.) Analogous to convective available potential energy, except that it is related to the negative buoyancy associated with evaporative cooling of liquid water within a sinking cloudy air parcel.
On a thermodynamic diagram, if a line is drawn corresponding to a sinking cloudy air parcel (follow a moist adiabat downward while the parcel is cloudy, and then after all liquid water has evaporated, continue below cloud base by following a dry adiabat), the EAPE is the area between this air-parcel line and a line corresponding to the environmental sounding. The resulting EAPE can be related to the kinetic energy associated with a negatively buoyant, sinking air parcel, and is useful for determining attributes of downdrafts and downbursts from thunderstorms.

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