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Predicted CO concentrations showing sensitivity to: A) atmospheric stability category; B) wind speed; C) mixing height; and traffic volume. Unless otherwise modified, plots use nominal conditions (wind speed = 4 m s-1, VPH = 10,000; emission rate = 300 g mi-1; wind angle = 180°). Panel A uses a wind speed of 2 m s-1. Panel C uses a constant link emission rate.
