Absolute velocity: Difference between revisions

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<div class="definition"><div class="short_definition">[[Velocity]] as measured in an [[absolute coordinate system]]; hence, in meteorology,  the ([[vector]]) sum of the velocity of a [[fluid parcel]] relative to the earth and the velocity of the  parcel due to the earth's rotation.</div><br/> <div class="paragraph">The east&ndash;west component is the only one affected:  <div class="display-formula"><blockquote>[[File:ams2001glos-Ae3.gif|link=|center|ams2001glos-Ae3]]</blockquote></div> where ''u'' and ''u''<sub>''a''</sub> are the relative and absolute eastward speeds, &#x003a9; the angular speed of the earth's  rotation, ''r'' the radial distance of the parcel from the center of the earth, and &#x003c6; the latitude of the  parcel.</div><br/> </div>
<div class="definition"><div class="short_definition">[[velocity|Velocity]] as measured in an [[absolute coordinate system]]; hence, in meteorology,  the ([[vector]]) sum of the velocity of a [[fluid parcel]] relative to the earth and the velocity of the  parcel due to the earth's rotation.</div><br/> <div class="paragraph">The east&ndash;west component is the only one affected:  <div class="display-formula"><blockquote>[[File:ams2001glos-Ae3.gif|link=|center|ams2001glos-Ae3]]</blockquote></div> where ''u'' and ''u''<sub>''a''</sub> are the relative and absolute eastward speeds, &#x003a9; the angular speed of the earth's  rotation, ''r'' the radial distance of the parcel from the center of the earth, and &#x003c6; the latitude of the  parcel.</div><br/> </div>
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Revision as of 15:18, 25 April 2012



absolute velocity[edit | edit source]

Velocity as measured in an absolute coordinate system; hence, in meteorology, the (vector) sum of the velocity of a fluid parcel relative to the earth and the velocity of the parcel due to the earth's rotation.

The east–west component is the only one affected:
ams2001glos-Ae3
where u and ua are the relative and absolute eastward speeds, Ω the angular speed of the earth's rotation, r the radial distance of the parcel from the center of the earth, and φ the latitude of the parcel.


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