Articles | Volume 18, issue 11
Atmos. Chem. Phys., 18, 8293–8312, 2018
https://doi.org/10.5194/acp-18-8293-2018
Atmos. Chem. Phys., 18, 8293–8312, 2018
https://doi.org/10.5194/acp-18-8293-2018

Research article 14 Jun 2018

Research article | 14 Jun 2018

Sources and characteristics of summertime organic aerosol in the Colorado Front Range: perspective from measurements and WRF-Chem modeling

Roya Bahreini et al.

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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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AR: Author's response | RR: Referee report | ED: Editor decision
AR by Roya Bahreini on behalf of the Authors (03 May 2018)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (04 May 2018) by Lynn M. Russell
RR by Anonymous Referee #2 (23 May 2018)
ED: Publish as is (23 May 2018) by Lynn M. Russell
AR by Roya Bahreini on behalf of the Authors (26 May 2018)  Author's response    Manuscript
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Short summary
We measured organic aerosol (OA) and relevant trace gases during FRAPPÉ in the Colorado Front Range, with the goal of characterizing summertime OA formation. Our results indicate a significant production of secondary OA (SOA) in this region. About 2 μg m−3 of OA was present at background CO levels, suggesting contribution of non-combustion sources to SOA. Contribution of oil- and gas-related activities to anthropogenic SOA was modeled to be ~38 %. Biogenic SOA contributed to >40 % of OA.
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