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Brian Jackson edited In_the_next_section_we__.tex
over 8 years ago
Commit id: 3654a9bcb816315284d3389785e22731ea888ebe
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\nonumber \rho(\Gamma_{\rm act}, P_{\rm act}) \approx k^\prime \Gamma_{\rm act}^{-8/3} P_{\rm act}^{-5/2}.
\end{equation*}
Using a direct numerical simulation of a dust devil barometric survey, \cite{Lorenz_2014} found that an observed distribution $\rho(P_{\rm obs}) \propto P_{\rm obs}^{-2}$ required an actual distribution approximately $\rho(P_{\rm act}) \propto P_{\rm act}^{-2.8}$, in line with our results here. Our results show that, for observed distributions following power-laws with a negative indices, a slightly steeper slope is required for the distribution of actual profile depths and considerably steeper for the distribution of widths.
Not surprisingly, Equation \ref{eqn:convert_from_actual_to_observed_density} shows that barometric surveys for dust devils will necessarily couple the observed distributions of pressure profiles and widths.