Difference between revisions of "Isothermal atmosphere"
From Glossary of Meteorology
imported>Perlwikibot (Created page with " {{TermHeader}} {{TermSearch}} <div class="termentry"> <div class="term"> == isothermal atmosphere == </div> <div class="definition"><div class="short_definition">(<br/...") |
imported>Perlwikibot |
||
| Line 9: | Line 9: | ||
</div> | </div> | ||
| − | <div class="definition"><div class="short_definition">( | + | <div class="definition"><div class="short_definition">(''Also called'' exponential atmosphere.) An idealized [[atmosphere]] in [[hydrostatic equilibrium]] in which the [[temperature]] is constant with height and in which, therefore, the [[pressure]] decreases exponentially upward.</div><br/> <div class="paragraph">In such an atmosphere the [[thickness]] between any two heights is given by <div class="display-formula"><blockquote>[[File:ams2001glos-Ie18.gif|link=|center|ams2001glos-Ie18]]</blockquote></div> where ''R''<sub>''d''</sub> is the [[gas constant]] for [[dry air]], ''T''<sub>''v''</sub> the [[virtual temperature]] (°K), ''g'' the [[acceleration of gravity]], and ''P''<sub>''A''</sub> and ''P''<sub>''B''</sub> the pressures at the heights ''z''<sub>''A''</sub> and ''z''<sub>''B''</sub>, respectively. In the isothermal atmosphere there is no finite height at which the pressure vanishes.</div><br/> </div> |
</div> | </div> | ||
Revision as of 15:31, 20 February 2012
isothermal atmosphere
(Also called exponential atmosphere.) An idealized atmosphere in hydrostatic equilibrium in which the temperature is constant with height and in which, therefore, the pressure decreases exponentially upward.
In such an atmosphere the thickness between any two heights is given by where Rd is the gas constant for dry air, Tv the virtual temperature (°K), g the acceleration of gravity, and PA and PB the pressures at the heights zA and zB, respectively. In the isothermal atmosphere there is no finite height at which the pressure vanishes.
Copyright 2022 American Meteorological Society (AMS). For permission to reuse any portion of this work, please contact permissions@ametsoc.org. Any use of material in this work that is determined to be “fair use” under Section 107 of the U.S. Copyright Act (17 U.S. Code § 107) or that satisfies the conditions specified in Section 108 of the U.S.Copyright Act (17 USC § 108) does not require AMS’s permission. Republication, systematic reproduction, posting in electronic form, such as on a website or in a searchable database, or other uses of this material, except as exempted by the above statement, require written permission or a license from AMS. Additional details are provided in the AMS Copyright Policy statement.
