Articles | Volume 19, issue 6
https://doi.org/10.5194/acp-19-3905-2019
https://doi.org/10.5194/acp-19-3905-2019
Research article
 | 
26 Mar 2019
Research article |  | 26 Mar 2019

In situ measurements of trace gases, PM, and aerosol optical properties during the 2017 NW US wildfire smoke event

Vanessa Selimovic, Robert J. Yokelson, Gavin R. McMeeking, and Sarah Coefield

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Latest update: 22 Jul 2024
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Short summary
A massive wildfire smoke episode impacted the western US and Canada in summer 2017. We measured CO, other trace gases, PM, BC, and aerosol optical properties at a heavily impacted, ground-based site affected by this event. Brown carbon diminished as smoke aged but was a persistent component of the regional smoke, accounting for about half of aerosol absorption at 401 nm on average. The PM / CO ratios suggested aerosol evaporation was dominant at the surface at smoke ages of up to ~ 1–2 days.
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