A21A-0060
The observed response of ozone production to the policy-driven decrease of NOx and CO emissions in the Baltimore/Washington area
Tuesday, 15 December 2015
Poster Hall (Moscone South)
Sandra Jane Roberts1, Kyle Hosley2, Xinrong Ren3, Glenn Wolfe4, Russell R Dickerson5 and Ross J Salawitch5,6, (1)University of Maryland College Park, College Park, MD, United States, (2)University of Wisconsin-Madison, Department of Atmospheric and Oceanic Sciences, Madison, WI, United States, (3)NOAA Science Center, College Park, MD, United States, (4)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (5)University of Maryland, College Park, Atmospheric and Oceanic Sciences, College Park, MD, United States, (6)University of Maryland, College Park, Chemistry and Biochemistry, College Park, MD, United States
Abstract:
The nonlinearity of ozone production has important policy implications as cities continue to decrease NOx, CO, and other important ozone precursors. Observations in the Baltimore/Washington area from 1970 through 2014 demonstrate reductions in NOx and CO emissions due to policy implementation leading to dramatic improvement in air quality. We will analyze the response of the reactivity of ozone, NOx, and VOC to these emission reductions in the Baltimore/Washington area using the University of Washington Chemical Model (UWCMv2.2). This model allows us to evaluate this response using multiple gas-phase chemical mechanisms. With this model, we will also compare and contrast the response of modeled ozone to reduced NOx and CO concentrations across multiple chemical mechanisms.
