Impact of intercontinental long range transport and local emissions on ozone

Abstract

The contribution of long range trasport from different continents on the East Asia (EA) regional air quality was studied by various boundary conditions. A 20% reduction in NOxemissions on Europe and South Asia were designed to evaluate the long range transport impact in East Asia, and 20% NO reduction in EA was used to evaluate local O3impact. Mean surface ozone in East Asia decreased when there was a 20% NO reduction in Europe and South Asia in January and July. Europe emissions showed larger impact on northwest EA, while South Asia emissions mainly influenced southwest EA. An O3/NO ratio of 20:1 was found in July 2001. In January, most of north and east EA was controlled by radical-limited regime. This is an abstract of a paper presented at the 102nd Air & Waste Management Association Annual Conference and Exhibition (Detroit, MI 6/16-19/2009).