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Forward Lagrangian stochastic simulation of a transient source in the atmospheric surface layer

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Abstract

We show that a forward Lagrangian stochastic (LS) model simulates well the ensemble-averaged concentration transient due to a short time (5 min) point source in the uniform atmospheric surface layer. In LS models, computational particles, which may not descend below ground level, are necessarily reflected at an imposed (artificial) boundary above ground. Model results were rather insensitive to the placing of the lower reflection boundary, and no definite benefit stemmed from including a parametrization for unresolved delays/displacements beneath the lower boundary.

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Authors and Affiliations

  1. Department of Earth & Atmospheric Sciences, University of Alberta, 1-26 Earth Sciences Building, Edmonton, AB, T6G 3E6, Canada

    E. H. Shadwick, J. D. Wilson & T. K. Flesch

Authors
  1. E. H. Shadwick
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  2. J. D. Wilson
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  3. T. K. Flesch
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Correspondence to E. H. Shadwick.

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Shadwick, E.H., Wilson, J.D. & Flesch, T.K. Forward Lagrangian stochastic simulation of a transient source in the atmospheric surface layer. Boundary-Layer Meteorol 122, 263–272 (2007). https://doi.org/10.1007/s10546-006-9114-0

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  • DOI: https://doi.org/10.1007/s10546-006-9114-0

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