Dewpoint formula: Difference between revisions
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<div class="definition"><div class="short_definition">A formula for the calculation of the approximate height of the [[lifting condensation level]].</div><br/> <div class="paragraph">Therefore, it is employed to estimate the height of the base of [[convective clouds]], under suitable atmospheric and topographic conditions. In a practical but simplified form, it may be stated <div class="display-formula"><blockquote>[[File:ams2001glos-De22.gif|link=|center|ams2001glos-De22]]</blockquote></div> where ''H'' is the height above the surface in km and ''T'' and ''T''<sub>''d''</sub> are the [[temperature]] and [[dewpoint]] in degrees Celsius. This is derived from assuming that the temperature decreases 9.8& | <div class="definition"><div class="short_definition">A formula for the calculation of the approximate height of the [[lifting condensation level|lifting condensation level]].</div><br/> <div class="paragraph">Therefore, it is employed to estimate the height of the base of [[convective clouds]], under suitable atmospheric and topographic conditions. In a practical but simplified form, it may be stated <div class="display-formula"><blockquote>[[File:ams2001glos-De22.gif|link=|center|ams2001glos-De22]]</blockquote></div> where ''H'' is the height above the surface in km and ''T'' and ''T''<sub>''d''</sub> are the [[temperature]] and [[dewpoint]] in degrees Celsius. This is derived from assuming that the temperature decreases 9.8°C and the dewpoint decreases 1.8°C for each km increase in [[altitude]], values which are approximately correct for a well-mixed [[boundary layer]]. The convective-cloud height diagram is a graphic form of this relationship.</div><br/> </div> | ||
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Latest revision as of 15:47, 25 April 2012
dewpoint formula
A formula for the calculation of the approximate height of the lifting condensation level.
Therefore, it is employed to estimate the height of the base of convective clouds, under suitable atmospheric and topographic conditions. In a practical but simplified form, it may be stated where H is the height above the surface in km and T and Td are the temperature and dewpoint in degrees Celsius. This is derived from assuming that the temperature decreases 9.8°C and the dewpoint decreases 1.8°C for each km increase in altitude, values which are approximately correct for a well-mixed boundary layer. The convective-cloud height diagram is a graphic form of this relationship.
