Particle Dispersion in the Neutral Atmospheric Surface Layer

Sergey Belan; Vladimir Lebedev; Gregory Falkovich

doi:10.1007/s10546-015-0108-7

Particle Dispersion in the Neutral Atmospheric Surface Layer

Sergey Belan, Vladimir Lebedev, Gregory Falkovich

Department of Physics of Complex Systems

Weizmann Institute of Science

Research output: Contribution to journal › Article › peer-review

Abstract

We address theoretically the longstanding problem of particle dispersion in the lower atmosphere. The evolution of particle concentration under an absorbing boundary condition at the ground is described. We derive a close-form solution for the downwind surface density of deposited particles and find how the number of airborne particles decreases with time. The problem of the plume formation above the extended surface source is also solved analytically. At the end, we show how turbophoresis modifies the mean settling velocity of particles.

Original language	English
Pages (from-to)	23-40
Number of pages	18
Journal	Boundary-Layer Meteorology
Volume	159
Early online date	12 Nov 2015
DOIs	https://doi.org/10.1007/s10546-015-0108-7
State	Published - Apr 2016

All Science Journal Classification (ASJC) codes

Atmospheric Science

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10.1007/s10546-015-0108-7

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title = "Particle Dispersion in the Neutral Atmospheric Surface Layer",

abstract = "We address theoretically the longstanding problem of particle dispersion in the lower atmosphere. The evolution of particle concentration under an absorbing boundary condition at the ground is described. We derive a close-form solution for the downwind surface density of deposited particles and find how the number of airborne particles decreases with time. The problem of the plume formation above the extended surface source is also solved analytically. At the end, we show how turbophoresis modifies the mean settling velocity of particles.",

author = "Sergey Belan and Vladimir Lebedev and Gregory Falkovich",

note = "The work in Israel was supported by the Israeli Science Foundation and the Minerva Foundation with funding from the German Ministry for Education and Research. The work in Russia (analytic theory and writing the paper) was supported by the RScF grant 14-22-00259.",

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AU - Falkovich, Gregory

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N2 - We address theoretically the longstanding problem of particle dispersion in the lower atmosphere. The evolution of particle concentration under an absorbing boundary condition at the ground is described. We derive a close-form solution for the downwind surface density of deposited particles and find how the number of airborne particles decreases with time. The problem of the plume formation above the extended surface source is also solved analytically. At the end, we show how turbophoresis modifies the mean settling velocity of particles.

AB - We address theoretically the longstanding problem of particle dispersion in the lower atmosphere. The evolution of particle concentration under an absorbing boundary condition at the ground is described. We derive a close-form solution for the downwind surface density of deposited particles and find how the number of airborne particles decreases with time. The problem of the plume formation above the extended surface source is also solved analytically. At the end, we show how turbophoresis modifies the mean settling velocity of particles.

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DO - 10.1007/s10546-015-0108-7

M3 - مقالة

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EP - 40

JO - Boundary-Layer Meteorology

JF - Boundary-Layer Meteorology

ER -

Particle Dispersion in the Neutral Atmospheric Surface Layer

Abstract

All Science Journal Classification (ASJC) codes

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