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Project at a Glance

Project Status: complete

Report Published February 1978:

Title: Model of advection, diffusion and chemistry of air pollution (MADCAP) evaluated at San Diego Air Basin

Contractor: Science Applications, Inc.

Contract Number: A6-210-30 & A5-041-80

Research Program Area: Atmospheric Processes

Topic Areas: Modeling


This report presents the derivation and application of the regional photochemical model MADCAP and its data processors. The first chapter is an introduction to the MADCAP model. The second chapter includes derivation of the basic algorithms. Two validation runs with 37 x 51 x 5 grids on 10 / 3 / 75 and 10 / 16 / 75, for San Diego Air Basin are described in chapter 3. Input data for the validation runs are presented first, then it is followed by the comparisons between the MACDAP simulations and measured air quality data. Chapter 4 presents the results of three different sensitivity analyses; the inert pollutant analysis, the photochemistry analysis and the dispersion and photochemistry analysis of the San Diego baseline (20 x 10 x 5, 10 / 3 / 75) to variation of input data. Finally the conclusions and recommendations are stated in chapter 5. A complete user's manual for the MADCAP model as well as three data processors is given in the Appendix A.

The authors of this report would like to acknowledge the helpful discussion of Mr. A. J. Ranzieri of California Air Resource Board (CARB), and the valuable operation system supports of Messers. G. Knops and T. Woody of CARB. We also would like to acknowledge the computer time provided to us by California Air Resource Board.


For questions regarding this research project, including available data and progress status, contact: Heather Choi at (916) 322-3893

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