Conclusions
We have demonstrated that the choice of modules in transport processes interacts with other model configurations. Comparison with observations, especially with secondary species such as O3, may not be sufficient to allow selection of the best modules. For example, we have compared first layer ozone concentrations with those from EPA’s AIRS database. Figure 5 shows that the configuration F36 has least bias compared with observations. However, this alone is not sufficient to determine which transport algorithms are superior. Factors such as the representation of emissions inputs, the treatment of plume-in-grid, the use of different chemical mechanisms,the selection of different chemical solvers, and the model grid structure (i.e., vertical and horizontal resolutions and domain size), all contribute to different model results. Establishment of the best configuration of science process modules in a comprehensive AQM requires balanced representations of transport algorithms with other physical and chemical processes.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Bott, A., 1989, A positive definite advection scheme obtained by nonlinear renormalization of the advection fluxes. Mon. Wea. Rev. 117, 1006–1015.
Byun, D.W., J. Young., G. Gipson., K. Schere, J. Godowitch., J. Pleim, F. Binkowsk., S. Roselle, B. Benjey, J. Ching., J. Novak, S. LeDuc, 1998, An urban air quality simulation with the community multi-scale air quality modeling system. The Second Urban Environment Symposium, Albuquerque, NM, Nov. 2–6, 1998. Amer. Meteor. Soc.
Byun, D.W., 1999, Dynamically consistent formulations in meteorological and air quality models for multi-scale atmospheric applications: Part II. Mass conservation issues. J. Atmos. Sci., Vol 56, 3808–3820.
Byun, D.W. and J.K.S. Ching, ed., 1999, Science Algorithms of the EPA Models-3 Community Multi-scale Air Quality (CMAQ) Modeling System, NERL, Research Triangle Park, NC. [Available from National Exposure Research Laboratory, U.S. Environmental Protection Agency, Research Triangle park, NC 27711]
Colella, P. and P. R. Woodward, 1984, The piecewise parabolic method (PPM) for gas-dynamical simulations. J. Comp. Phys., 54, 174–201.
Pleim, J.E. and J. Chang, 1992, A non-local closure model for vertical mixing in the convective boundary layer. Atmos. Env., 26A, 965–981.
Young, J. O., E. Sills, and D. Jorge, 1993, Optimization of the Regional Oxidant Model for the Cray Y-MP. EPA/600/R-94-065. Research Triangle Park, NC. [Available from National Exposure Research Laboratory, U.S. Environmental Protection Agency, Research Triangle park, NC 27711]
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2004 Kluwer Academic Publishers
About this chapter
Cite this chapter
Byun, D.W., Pleim, J.E. (2004). Sensitivity of Ozone and Aerosol Predictions to the Transport Algorithms in the Models-3 Community Multi-Scale Air Quality (CMAQ) Modeling System. In: Gryning, SE., Schiermeier, F.A. (eds) Air Pollution Modeling and Its Application XIV. Springer, Boston, MA. https://doi.org/10.1007/0-306-47460-3_21
Download citation
DOI: https://doi.org/10.1007/0-306-47460-3_21
Publisher Name: Springer, Boston, MA
Print ISBN: 978-0-306-46534-5
Online ISBN: 978-0-306-47460-6
eBook Packages: Springer Book Archive