Numerical recipes in C (2nd ed.): the art of scientific computing
Numerical recipes in C (2nd ed.): the art of scientific computing
CVODE, a stiff/nonstiff ODE solver in C
Computers in Physics
Numerical Solution of Partial Differential Equations: An Introduction
Numerical Solution of Partial Differential Equations: An Introduction
A tool to improve the execution time of air quality models
Environmental Modelling & Software
Air quality integrated modelling in Turin urban area
Environmental Modelling & Software
Prediction of ozone levels in London using the MM5-CMAQ modelling system
Environmental Modelling & Software
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The approach of this work is the application of a FEOM (Fully Equivalent Operational Model) to the solution of the stiff system of Ordinary Differential Equations (ODE) which describes the chemical reaction mechanisms inside an idealized three-dimensional model of diffusion/advection of pollutants. We achieved noticeable computational savings. In (Gomez et al., 2008) we restricted our attention to the application of a single FEOM to two basic mechanisms of atmospheric chemical reactions and to the analysis of the FEOM parameters in order to replace the numerical solvers adopting Gear methods by this FEOM and presented a detailed description of the FEOM construction. We also analyzed the parameter settings and compared two interpolation methods to calculate the HDMR expansions that were used in the FEOM in order to get the most efficient FEOM implementation for our case studies. Here we replace the numerical solver called CVODE by one or several FEOMs in a 3-dimensional model of diffusion/advection of air pollutants. The main aim of this work is to investigate the FEOM accuracy and effectiveness at short time scales when it interacts with the rest of a model and when it works with the set of variables of the original model.