URBAN FREEWAY DUST PRODUCTION IN A DESERT COMPLEX TERRAIN SETTING OF CENTRAL ARIZONA

摘要

We have conducted a series of experiments using a variety of aerosol techniques, including TEOMs, sector-controlled filter sampling for single-particle analysis using automated SEM, and portable optical aerosol monitors along Phoenix-area freeways. Emphasis has been on periods of very low wind speed when commonly used line-source models have difficulty. Very low wind speeds are common in both the winter and summer in complex terrain areas of the Southwest US, especially in morning and evening transition periods (Fernando et al, 2001).