Articles | Volume 18, issue 11
https://doi.org/10.5194/acp-18-8293-2018
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, Ravan Ahmadov, Stu A. McKeen, Kennedy T. Vu, Justin H. Dingle, Eric C. Apel, Donald R. Blake, Nicola Blake, Teresa L. Campos, Chris Cantrell, Frank Flocke, Alan Fried, Jessica B. Gilman, Alan J. Hills, Rebecca S. Hornbrook, Greg Huey, Lisa Kaser, Brian M. Lerner, Roy L. Mauldin, Simone Meinardi, Denise D. Montzka, Dirk Richter, Jason R. Schroeder, Meghan Stell, David Tanner, James Walega, Peter Weibring, and Andrew Weinheimer

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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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