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November 2020

How much volatile organic compound (VOC) mass do chemical products release to the atmosphere? See our preprint in Atmospheric Chemistry and Physics Discussions by Seltzer et al.

I have an opening for a student (or postdoc) to work on development of the Community Multiscale Air Quality (CMAQ) model at EPA with an emphasis on developing the chemistry of gas and aerosol species. Topics could include consideration of autoxidation, organic nitrate fate, and/or inclusion of SOA precursors. To obtain additional information as well as apply, see https://www.zintellect.com/Opportunity/Details/EPA-ORD-CEMM-AESMD-2020-12. Applications are due December 18.

October 2020

Our work highlights how volatile chemical products impact both near-field and far-field exposure. See the paper by Qin et al. (2020) in Nature Sustainability and overview on Behind the Paper.

April 2020

Acid rain is recognized for its impacts on human health and ecosystems, and programs to mitigate these effects have had implications for atmospheric acidity. Historical measurements indicate that cloud and fog droplet acidity has changed in recent decades in response to controls on emissions from human activity, while the limited trend data for suspended particles indicate acidity may be relatively constant. Our new review in ACP reflects the efforts of an international team to synthesize knowledge on the acidity of atmospheric particles and clouds: Pye et al. (2020).

See our paper on the role of organic nitrates in organic aerosol formation by Zare et al. in the ACS Earth Space Chemistry Virtual Special Issue, New Advances in Organic Aerosol Chemistry.

March 2020

A set of three papers (Pye et al., 2015; Pye et al., 2017; Budisulistiorini et al., 2017) were recently awarded a 2019 EPA Scientific and Technological Achievement Award (STAA) for advancing the understanding and model representations of particulate matter in vegetated locations. The improved model is used to understand properties of ambient particles such as the hygroscopicity of organic aerosol which affects how particle interact with light.

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