Application of a model system for the study of transport and diffusion in complex terrain to the TRACT experiment

被引：35

作者：

Carvalho, JC ^{[1
]}

Anfossi, D

Castelli, ST

Degrazia, GA

机构：

[1] Univ Luterana Brasil, Fac Engn Ambiental, Curso Engn Ambiental, Programa Pos Grad Engn Energia Ambiente & Mat, BR-92420280 Canoas, RS, Brazil

[2] CNR, Ist Cosmogeofis, I-10133 Turin, Italy

[3] Univ Alessandria, Dipartimento Sci & Tecnol Avanzate, I-15100 Alessandria, Italy

[4] Univ Fed Santa Maria, Dept Fis, BR-97105900 Santa Maria, RS, Brazil

来源：

ATMOSPHERIC ENVIRONMENT | 2002年 / 36卷 / 07期

关键词：

atmospheric dispersion; Lagrangian model; tracer experiment; model initialisation; turbulence parameterisation;

D O I：

10.1016/S1352-2310(01)00559-3

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The transport and diffusion processes of a tracer gas released near the ground in the Rhine valley region, in Central Europe, during the 1992 TRACT field experiment, are simulated by a computational model system for complex terrain. This system (RMS) is composed of the prognostic mesoscale model RAMS, the Lagrangian stochastic dispersion model SPRAY and the interface code MIRS, which links RAMS to SPRAY. Three flow simulations were performed, with different initialisations and the one showing the best agreement with the measured flow was selected for the simulation of the TRACT tracer experiment, Tracer concentrations measured by an array of samplers at ground level and by an airplane aloft, are used to evaluate the 3-D concentration field simulated by the model system. The analysis of the simulation results generated by RMS shows that our model system very well reproduces the general behaviour of the contaminant plume, the temporal and spatial distribution of the concentration and the location of the concentration maxima. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：1147 / 1161

页数：15

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