Ozone Modeling and Emission Control Strategies for the Lake Tahoe Basin

Affiliation(s) PI Project period Funded by
DAS Koracin, Darko R 08/30/2012 - 08/31/2013 USDA - Forest Service

Project Description

In the past years there have been an increasing number of exceedances of the California 8-hour ozone standard in the Lake Tahoe Air Basin, and the area is currently designated as a nonattainment-transitional zone for ozone (O3) by the California Air Resources Board. A robust emission control strategy is needed and can only be achieved if we have a detailed understanding of the processes affecting the local and regional O3 formation, transport and dispersion patterns by using measurements and modeling. In response to Subtheme 3b: Managing air pollutants, we propose to Develop, validate, and apply an advanced state-of-the-art emission, atmospheric, and photochemical modeling system SMOKE/WRF/CMAQ) to simulate ozone in the Lake Tahoe Basin using local emission inventory and CARB and EPA emission inventories. Validate the ozone modeling system using exceedance episodes in the period 2006-2009 as well as against recent measurements in summer 2010. Integrate the ozone modeling system as a component of the Lake Tahoe Air Quality Modeling System (LTAQMS). Perform simulations for various emission scenarios and determine the most cost effective control strategies for the Basin emission sources to control ozone levels. The study will also provide quantification of the impact of local vs. regional sources of ozone and its precursors.