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  Q-vectors
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The Q-vector is defined by the following equations:<br>
Q<font size=-1><sub>1</sub></font>=-[R/(<a href="sigma.html">sigma</a>*p)]
*[(du/dx)*dT/dx)+(dv/dx)*(dT/dy)]<br>
Q<font size=-1><sub>2</sub></font>=-[R/(<a href="sigma.html">sigma</a>*p)]
*[(du/dy)*dT/dx)+(dv/dy)*(dT/dy)]<br>
where the partial derivatives were calculated with the use of the
<i>cdiff</i> function in GrADS.
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The vectors were made by plotting the vector sum of
Q<font size=-1><sub>1</sub></font> and Q<font size=-1><sub>2</sub></font>
and colored by the magnitude of the resulting vector. Q-vectors are not
available at 1000 mb.

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Units: kPa m<font size=-1><sup>-1</sup><font> s<font size=-1><sup>-1</sup></font>
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