Articles | Volume 19, issue 6
Atmos. Chem. Phys., 19, 3905–3926, 2019
https://doi.org/10.5194/acp-19-3905-2019
Atmos. Chem. Phys., 19, 3905–3926, 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 et al.

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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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