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Published March 1983 | public
Journal Article

Development of a second-generation mathematical model for urban air pollution—II. Evaluation of model performance


The performance of a new comprehensive model for urban-scale photochemical air pollution is evaluated. The model accurately reproduced the important features of ozone (O₃) and nitrogen dioxide (NO₂) distributions over the South Coast Air Basin of California for a two-day period 26–27 June 1974. Various statistical measures of model performance are reported together with predicted and observed concentration time histories at selected monitoring sites. A new technique for estimating error bounds on emission inventories is also described. The method incorporates the influence of uncertainties in both mass emission rates and chemical reactivity.

Additional Information

© 1983 Pergamon Press Ltd. First received 24 May 1982 and in final form 26 July 1982. This work was supported by the California Air Resources Board under Contracts A5-04A-X7 and A7-187-30. Additional funding was provided by the U.S. Environmental Protection Agency Grant No. R805537 and a Department of Energy Institutional Grant EY-76-G-03-1305. The assistance of the California Air Resources Board Research Division its chief John Holmes and the Air Quality Modeling Section: Andrew Ranzieri, Paul Allen, Praveen Arnar, Marna Johns. Kit Wagner and Timothy Woody is appreciated. Additional contributions were made by W. R. Goodin and J. W. Tilden.

Additional details

August 19, 2023
October 17, 2023