Session 1B Regional Air Quality. Part I

Monday, 13 January 2020: 8:30 AM-10:00 AM
206B (Boston Convention and Exhibition Center)
Host: 22nd Conference on Atmospheric Chemistry
A. Gannet Hallar, University of Utah, Boulder, CO; Steven S. Brown, NOAA Earth System Research Laboratory, Chemical Sciences Division, Boulder, CO and Jeffrey L. Collett Jr., Colorado State Univ., Department of Atmospheric Science, Fort Collins, CO

Variations in meteorology and climate couple with a range of source types and source activity levels to yield a wide range of regional scale air quality challenges around the globe.  This session solicits reports from both observational and modeling perspectives on air pollution in different regions within North America and around the globe. Presentations focusing on improving air quality and air quality challenges are both welcome. Relevant air quality issues include, but are not limited to, ozone, fine particles, smoke from wild and prescribed fires, visibility and regional haze, and reactive nitrogen deposition.

8:30 AM
Decadal Trends in Air Pollution over the Eastern United States: A Remarkable Success Story
Russell R. Dickerson, Univ. of Maryland, College Park, College Park, MD; and T. P. Canty and X. Ren
8:45 AM
9:00 AM
A Summary of Decadal Trends of Various Pollutants Monitored across Canada
Leiming zhang, Environment and Climate Change Canada, Toronto, ON, Canada; and X. Yao, H. Wang, I. Cheng, J. Feng, A. Cole, and J. M. O'Brien
9:15 AM
Do Atmospheric Nonmethane Hydrocarbon Concentrations Show Long-Term Trends? Results from a 15-yr Auto-GC Time Series
Bernhard Rappenglueck, Univ. of Houston, Houston, TX; and A. Holler and M. Ahmad

9:30 AM
Emergence of a New Chemical Regime: Growing Abundance of Water Soluble Organics in Cloud Water Associated with a Growing Ion Imbalance
Sara M. Lance, Univ. at Albany, SUNY, Albany, NY; and C. Lawrence, J. J. Schwab, D. Kelting, E. Yerger, H. Favreau, P. Casson, R. Brandt, K. Civerolo, and O. V. Rattigan
9:45 AM
TROPOMI Observations of the Atmospheric Composition over the Middle East
Zolal Ayazpour, Univ. at Buffalo, Buffalo, NY; and K. Sun

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