Atmospheric tide: Difference between revisions

From Glossary of Meteorology
No edit summary
m (Rewrite with Template:Term and clean up)
 
(One intermediate revision by the same user not shown)
Line 1: Line 1:
 
{{Term
 
|Display title=atmospheric tide
{{TermHeader}}
|Definitions={{Definition
{{TermSearch}}
|Num=1
 
|Meaning=(''Also called'' atmospheric oscillation.) Defined in analogy to the oceanic [[tide]] as  an atmospheric motion of the [[scale]] of the earth, in which vertical accelerations are neglected (but  [[compressibility]] is taken into account).
<div class="termentry">
|Explanation=Both the sun and moon produce atmospheric tides, and there exist both [[gravitational tides]]  and [[thermal tides]]. The [[harmonic]] component of greatest [[amplitude]], the 12-hour or semidiurnal  [[solar atmospheric tide]], is both gravitational and thermal in origin, the fact that it is greater than  the corresponding [[lunar atmospheric tide]] being ascribed usually to a [[resonance]] in the [[atmosphere]]  with a free [[period]] very close to the tidal period. Other tides of 6, 8, 12, and 24 hours  have been observed.<br/> Chapman, S. 1951. Compendium of Meteorology.  510&ndash;530.  
  <div class="term">
}}
== atmospheric tide ==
}}
  </div>
 
<div class="definition"><div class="short_definition">(''Also called'' atmospheric oscillation.) Defined in analogy to the oceanic [[tide]] as  an atmospheric motion of the [[scale]] of the earth, in which vertical accelerations are neglected (but  [[compressibility]] is taken into account).</div><br/> <div class="paragraph">Both the sun and moon produce atmospheric tides, and there exist both [[gravitational tides]]  and [[thermal tides]]. The [[harmonic]] component of greatest [[amplitude]], the 12-hour or semidiurnal  [[solar atmospheric tide]], is both gravitational and thermal in origin, the fact that it is greater than  the corresponding [[lunar atmospheric tide]] being ascribed usually to a [[resonance]] in the [[atmosphere]]  with a free [[period]] very close to the tidal period. Other tides of 6, 8, 12, and 24 hours  have been observed.</div><br/> </div><div class="reference">Chapman, S. 1951. Compendium of Meteorology.  510&ndash;530. </div><br/>
</div>
 
{{TermIndex}}
{{TermFooter}}
 
[[Category:Terms_A]]

Latest revision as of 05:21, 28 March 2024

(Also called atmospheric oscillation.) Defined in analogy to the oceanic tide as an atmospheric motion of the scale of the earth, in which vertical accelerations are neglected (but compressibility is taken into account).

Both the sun and moon produce atmospheric tides, and there exist both gravitational tides and thermal tides. The harmonic component of greatest amplitude, the 12-hour or semidiurnal solar atmospheric tide, is both gravitational and thermal in origin, the fact that it is greater than the corresponding lunar atmospheric tide being ascribed usually to a resonance in the atmosphere with a free period very close to the tidal period. Other tides of 6, 8, 12, and 24 hours have been observed.
Chapman, S. 1951. Compendium of Meteorology. 510–530.

Copyright 2024 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.