Investigation of the sources of coarse particles in Western United States
Abstract
The magnitude of the impact of dust on haze has strong spatial and temporal characteristics due to source variations in spatial scale, time, location, and causes of emission. For example, paved and unpaved road dust emissions are associated with motor vehicle traffic patterns, with some additional dependence on seasonal occurrences such as snow and agricultural activities. The primary causes of dust measured in the Western Regional Air Partnership (WRAP) region was studied by developing a methodology for assigning worst days when dust constituted the largest contributor to aerosol visibility extinction at IMPROVE monitors within the WRAP domain to a set of source events. The worst dust day was associated with one of these events: transcontinental transport of large scale events from Asia; windblown dust events; transport of windblown dust from sources upwind; and undetermined events. Transcontinental transport from Asia was responsible for 55 days, locally generated windblown dust was accountable for 201 days and, 252 worst dust days were primarily due to transport of windblown dust from upwind sources. This is an abstract of a paper presented at the AWMA Associations 99th Annual Conference and Exhibition 2006 (New Orleans, LA 6/20-23/2006).
Publication Title
Proceedings of the Air and Waste Management Association S Annual Conference and Exhibition Awma
Recommended Citation
Kavouras, I., Etyemezian, V., Xu, J., DuBois, D., & Green, M. (2006). Investigation of the sources of coarse particles in Western United States. Proceedings of the Air and Waste Management Association S Annual Conference and Exhibition Awma, 1, 139-143. Retrieved from https://digitalcommons.memphis.edu/facpub2/1271
