Poisson constant: Difference between revisions
From Glossary of Meteorology
imported>Perlwikibot (Created page with " {{TermHeader}} {{TermSearch}} <div class="termentry"> <div class="term"> == Poisson constant == </div> <div class="definition"><div class="short_definition">The ratio ...") |
imported>Perlwikibot No edit summary |
||
| Line 9: | Line 9: | ||
</div> | </div> | ||
<div class="definition"><div class="short_definition">The ratio κ of the [[gas constant]] ''R'' to the [[specific heat]] at constant [[pressure]], ''c''<sub>''p''</sub>.</div><br/> <div class="paragraph">For [[dry air]], κ = 0.2854. For [[moist air]], <div class="display-formula"><blockquote>[[File:ams2001glos-Pe22.gif|link=|center|ams2001glos-Pe22]]</blockquote></div> where ''R''<sub>''d''</sub> and ''c''<sub>''pd''</sub> are the gas constant and specific heat of dry air, ε is the ratio of the gas constants of [[water vapor]] and dry air, ''c''<sub>''pv''</sub> is the specific heat of water vapor, and ''r''<sub>''v''</sub> is the water vapor [[mixing ratio]]. The Poisson constant appears in the [[Poisson equation]] and in the definition of [[potential temperature]].</div><br/> </div> | <div class="definition"><div class="short_definition">The ratio κ of the [[gas constant]] ''R'' to the [[specific heat]] at constant [[pressure]], ''c''<sub>''p''</sub>.</div><br/> <div class="paragraph">For [[dry air]], κ = 0.2854. For [[moist air]], <div class="display-formula"><blockquote>[[File:ams2001glos-Pe22.gif|link=|center|ams2001glos-Pe22]]</blockquote></div> where ''R''<sub>''d''</sub> and ''c''<sub>''pd''</sub> are the gas constant and specific heat of dry air, ε is the ratio of the gas constants of [[water vapor]] and dry air, ''c''<sub>''pv''</sub> is the specific heat of water vapor, and ''r''<sub>''v''</sub> is the water vapor [[mixing ratio|mixing ratio]]. The Poisson constant appears in the [[Poisson equation]] and in the definition of [[potential temperature|potential temperature]].</div><br/> </div> | ||
</div> | </div> | ||
Latest revision as of 17:37, 25 April 2012
Poisson constant
For dry air, κ = 0.2854. For moist air, where Rd and cpd are the gas constant and specific heat of dry air, ε is the ratio of the gas constants of water vapor and dry air, cpv is the specific heat of water vapor, and rv is the water vapor mixing ratio. The Poisson constant appears in the Poisson equation and in the definition of potential temperature.
