Difference between revisions of "Atmospheric tide"

From Glossary of Meteorology
imported>Perlwikibot
(Created page with " {{TermHeader}} {{TermSearch}} <div class="termentry"> <div class="term"> == atmospheric tide == </div> <div class="definition"><div class="short_definition">(<br/>''Al...")
imported>Perlwikibot
 
Line 9: Line 9:
 
   </div>
 
   </div>
  
<div class="definition"><div class="short_definition">(<br/>''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 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>
 
</div>
  

Latest revision as of 14:41, 20 February 2012



atmospheric tide

(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.