Long-term observational constraints of organic aerosol dependence on inorganic species in the southeast US

Zheng, Yiqi; Thornton, Joel A.; Ng, Nga Lee; Cao, Hansen; Henze, Daven K.; McDuffie, Erin E.; Hu, Weiwei; Jimenez, Jose L.; Marais, Eloise A.; Edgerton, Eric; Mao, Jingqiu

doi:https://doi.org/10.5194/acp-20-13091-2020

Articles | Volume 20, issue 21

https://doi.org/10.5194/acp-20-13091-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-20-13091-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 21

Research article

|

09 Nov 2020

Research article |

| 09 Nov 2020

Long-term observational constraints of organic aerosol dependence on inorganic species in the southeast US

Yiqi Zheng, Joel A. Thornton, Nga Lee Ng, Hansen Cao, Daven K. Henze, Erin E. McDuffie, Weiwei Hu, Jose L. Jimenez, Eloise A. Marais, Eric Edgerton, and Jingqiu Mao

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Final revised paper (published on 09 Nov 2020)
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Preprint (discussion started on 24 Jun 2020)
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Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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RC1: 'Review of Zheng et al.', Anonymous Referee #1, 23 Jul 2020
- AC1: 'Response to reviewer #1', Yiqi Zheng, 16 Sep 2020
RC2: 'Comments to Zheng et al.', Anonymous Referee #2, 04 Aug 2020
- AC2: 'Response to reviewer #2', Yiqi Zheng, 16 Sep 2020

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by Yiqi Zheng on behalf of the Authors (17 Sep 2020) Author's response Manuscript

ED: Publish as is (25 Sep 2020) by Manabu Shiraiwa

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Short summary

This study aims to address a challenge in biosphere–atmosphere interactions: to what extent can biogenic organic aerosol (OA) be modified through human activities? From three surface network observations, we show OA is weakly dependent on sulfate and aerosol acidity in the summer southeast US, on both long-term trends and monthly variability. The results are in strong contrast to a global model, GEOS-Chem, suggesting the need to revisit the representation of aqueous-phase secondary OA formation.