Semi-Lagrangian Transport Algorithm For
Episodic Atmospheric Pollution
Author(s)
J.R. Manson, S.G. Wallis & D. Wang
Abstract
The paper describes a semi-Lagrangian transport algorithm for predicting the
fate of episodically released atmospheric pollutants in multi-dimensions. The
method employs a computational grid that aligns with the natural coordinate
system of the atmospheric flow field. This results in a simplified advection-
diffusion-reaction system that is perfectly suited to solution using an
unconditionally stable semi-Lagrangian method. This uses third order
interpolation for the advective fluxes with a convexity preservation algorithm to
prevent grid scale oscillations: solutions are thus conservative, monotonic and
highly accurate. The meth
Keywords
Related Book
Other papers in this volume
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