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| Titel |
Construction of the SILAM Eulerian atmospheric dispersion model based on the advection algorithm of Michael Galperin |
| VerfasserIn |
M. Sofiev, J. Vira, R. Kouznetsov, M. Prank, J. Soares, E. Genikhovich |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1991-959X
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| Digitales Dokument |
URL |
| Erschienen |
In: Geoscientific Model Development ; 8, no. 11 ; Nr. 8, no. 11 (2015-11-03), S.3497-3522 |
| Datensatznummer |
250116655
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| Publikation (Nr.) |
 copernicus.org/gmd-8-3497-2015.pdf |
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| Zusammenfassung |
The paper presents the transport module of the System for Integrated
modeLling of Atmospheric coMposition SILAM v.5 based on the advection
algorithm of Michael Galperin. This advection routine, so far weakly
presented in the international literature, is positively defined, stable at
any Courant number, and efficient computationally. We present the rigorous
description of its original version, along with several updates that improve
its monotonicity and shape preservation, allowing for applications to
long-living species in conditions of complex atmospheric flows. The scheme is
connected with other parts of the model in a way that preserves the sub-grid
mass distribution information that is a cornerstone of the advection
algorithm. The other parts include the previously developed vertical
diffusion algorithm combined with dry deposition, a meteorological
pre-processor, and chemical transformation modules.
The quality of the advection routine is evaluated using a large set of tests.
The original approach has been previously compared with several classic
algorithms widely used in operational dispersion models. The basic tests were
repeated for the updated scheme and extended with real-wind simulations and
demanding global 2-D tests recently suggested in the literature, which
allowed one to position the scheme with regard to sophisticated
state-of-the-art approaches. The advection scheme performance was fully
comparable with other algorithms, with a modest computational cost.
This work was the last project of Dr. Sci. Michael Galperin, who passed away
on 18 March 2008. |
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