Difference between revisions of "Saturation level"

From Glossary of Meteorology
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<div class="definition"><div class="short_definition">The [[altitude]] (and its corresponding [[pressure]] ''P''<sub>''sat''</sub>) to which an [[air parcel]] must  be lifted [[dry-adiabatically]] or lowered [[moist-adiabatically]] to be just saturated (100% [[relative  humidity]] with no liquid water present).</div><br/> <div class="paragraph">For unsaturated air, this is commonly known as the [[lifting condensation level]]. Saturation level  is a conserved [[variable]] that does not change during [[adiabatic]] lifting or lowering of saturated or  unsaturated air and can thus be used as a [[tracer]] for that air parcel. When paired with the corresponding  [[saturation]] air [[temperature]] at that altitude, the result is a [[saturation point]] that can  be represented on a [[thermodynamic diagram]].</div><br/> </div>
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<div class="definition"><div class="short_definition">The [[altitude]] (and its corresponding [[pressure]] ''P''<sub>''sat''</sub>) to which an [[air parcel]] must  be lifted [[dry-adiabatic process|dry-adiabatically]] or lowered [[moist-adiabatic process|moist-adiabatically]] to be just saturated (100% [[relative humidity|relative  humidity]] with no liquid water present).</div><br/> <div class="paragraph">For unsaturated air, this is commonly known as the [[lifting condensation level]]. Saturation level  is a conserved [[variable]] that does not change during [[adiabatic]] lifting or lowering of saturated or  unsaturated air and can thus be used as a [[tracer]] for that air parcel. When paired with the corresponding  [[saturation]] air [[temperature]] at that altitude, the result is a [[saturation point]] that can  be represented on a [[thermodynamic diagram]].</div><br/> </div>
 
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Latest revision as of 16:49, 25 April 2012



saturation level

The altitude (and its corresponding pressure Psat) to which an air parcel must be lifted dry-adiabatically or lowered moist-adiabatically to be just saturated (100% relative humidity with no liquid water present).

For unsaturated air, this is commonly known as the lifting condensation level. Saturation level is a conserved variable that does not change during adiabatic lifting or lowering of saturated or unsaturated air and can thus be used as a tracer for that air parcel. When paired with the corresponding saturation air temperature at that altitude, the result is a saturation point that can be represented on a thermodynamic diagram.