A Two-Dimensional Solution of the Advection–Diffusion Equation with Dry Deposition to the Ground-Reference-Cited by-同舟云学术

A Two-Dimensional Solution of the Advection–Diffusion Equation with Dry Deposition to the Ground

Published:2008-08-01 Issue:8 Volume:47 Page:2096-2104
ISSN:1558-8432
Container-title:Journal of Applied Meteorology and Climatology
language:en
Short-container-title:

Author:

Tirabassi Tiziano¹,Buske Daniela²,Moreira Davidson M.³,Vilhena Marco T.⁴

Affiliation:

1. Institute of Atmospheric Sciences and Climate of National Council of Researches, Bologna, Italy

2. Institute of Atmospheric Sciences and Climate of National Council of Researches, Bologna, Italy, and Programa de Pós-Graduação em Engenharia Mecânica, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil

3. Universidade Federal de Pelotas, UNIPAMPA, Bagé, Brazil

4. Programa de Pós-Graduação em Engenharia Mecânica, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil

Abstract

Abstract A mathematical scheme is developed to simulate the vertical turbulent dispersion of air pollution that is absorbed or deposited to the ground. The scheme is an exact analytical solution of the atmospheric diffusion equation, without any restriction to the vertical profile of wind speed and eddy diffusivities, and taking into account the dry deposition by a boundary condition of a nonzero flux to the ground. The performances of the solution, with a proper parameterization of the vertical profiles of the wind and eddy diffusivities, were evaluated against the dataset from the Hanford (Washington) diffusion experiment, in which two tracers (one depositing and one nondepositing) were released simultaneously. In addition, the solution derived in this work is compared with four different models, with deposition at the ground, found in the literature.

Publisher

American Meteorological Society

Subject

Atmospheric Science

Link

http://journals.ametsoc.org/jamc/article-pdf/47/8/2096/3544302/2008jamc1674_1.pdf

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