Research Projects

Project at a Glance

Project Status: complete

Title: Assessment of the ozone and aerosol formation potentials (reactivities) of organic compounds over the eastern United States.

Principal Investigator / Author(s): Russell, Armistead

Contractor: Georgia Tech Research Corp.

Contract Number: 00-339


Research Program Area: Atmospheric Processes

Topic Areas: Chemistry & Reactivity, Modeling


Abstract:

A direct sensitivity analysis techniques is used for three-dimensional reactivity assessment (with respect to ozone formation) in eastern United States. Spatially and temporally resolved absolute and relative reactivities of 31 explicit and 9 lumped organic compounds and CO are calculated for two basecase and two future emissions scenarios. In order to be able to compare different species, the emissions of all the targeted organic compounds are perturbed equally on a mass basis. This perturbation followed the same spatial distribution as the total anthropogenic VOC emissions. Despite the variability (both spatial and temporal) in the absolute reactivities, relative reactivities were fairly constant. Different types of domain wide reactivity metrics were considered. All the three dimensional metrics showed a high level of inter-species consistency among them and had fairly low day-to-day variability. Domain-wide metrics were comparable with box model scales, but showed a less dynamic inter-species behavior. The evaluated metrics showed good level of consistency for different episodes, scenarios, and domains.


 

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