Brian Jackson edited subsection_Single_Barometer_Surveys_In__.tex  almost 9 years ago

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\subsection*{Single Barometer Surveys}  In this kind of survey, one or more barometric sensors deployed in-situ record a pressure time series at a sampling rate $\lesssim 1$ s. A low-pressure convective vortex, a dust devil has a pressure depth $\Delta P$ at its center and a radial profile $P(r)$ resembling a Lorentz function with width $\Gamma$: $P(r) = \dfrac{\Delta P}{1 - \left( \dfrac{r}{\Gamma} \right)^2}$. Dust devils are usually carried by the background wind, with a velocity $\upsilon$, and so a dust devil passing near the barometer registers as a distinctive dip in pressure. However, the center of the devil is unlikely to pass directly over the