October 2021

Natural emissions—that is, emissions of trace gases and particles in the absence of anthropogenic activity—have profound impacts on air quality and the Earth’s atmosphere. This month’s EM describes several important examples of natural emissions and their impacts.


 Inside This Month's Issue


Natural Emissions and Their Impacts on Air Quality
by James T. Kelly and Golam Sarwar

Haboob Dust Storm: An Underrated Air Quality Hazard
by Hosein Foroutan‚Äč

Impacts of Volcanic Degassing Emissions Across the United States 
by Syuichi Itahashi, Rohit Mathur, Christian Hogrefe, Sergey Napelenok, and Yang Zhang

Chemistry for Modeling the Effects of Halogen and Other Natural Marine Emissions on Coastal Urban Air Quality
Emily Saunders and William R. Stockwell

Optical Measurements of Particulate Matter in the El Paso–Juárez Region: Natural Mineral Dust and Soot

by Rosa M. Fitzgerald, Nakul N. Karle, Pamela Lara, Javier Polanco, and William R. Stockwell

Improving the Characterization of Natural Emissions in CMAQ
by Daiwen Kang, Jeff Willison, Golam Sarwar, J. Mike Madden, Christian Hogrefe, Rohit Mathur, Brett Gantt, and Alfonso Saiz-Lopez

Also This Month...

Message from the President: Evaluating A&WMA Meetings
by Brian C. Bunger

Back to Basics: ‘Better know your Association’ -- Leadership Training Academy

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