Free tropospheric aerosols at the Mt. Bachelor Observatory: more oxidized and higher sulfate content compared to boundary layer aerosols

Zhou, Shan; Collier, Sonya; Jaffe, Daniel A.; Zhang, Qi

doi:https://doi.org/10.5194/acp-19-1571-2019

Articles | Volume 19, issue 3

https://doi.org/10.5194/acp-19-1571-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-19-1571-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 3

Research article

|

07 Feb 2019

Research article |

| 07 Feb 2019

Free tropospheric aerosols at the Mt. Bachelor Observatory: more oxidized and higher sulfate content compared to boundary layer aerosols

Shan Zhou, Sonya Collier, Daniel A. Jaffe, and Qi Zhang

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Final revised paper (published on 07 Feb 2019)
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Preprint (discussion started on 12 Sep 2018)
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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 Free tropospheric aerosols at the Mt. Bachelor Observatory: More oxidised and Higher Sulphate content compared to Boundary layer aerosol"', Anonymous Referee #1, 15 Nov 2018
RC2: 'Review of “Free Tropospheric Aerosols at the Mt. Bachelor Observatory: More Oxidized and Higher Sulfate Content Compared to Boundary Layer Aerosols” by Shan Zhou et al', Anonymous Referee #2, 21 Nov 2018
AC1: 'Response to review comments', Qi Zhang, 21 Jan 2019

Peer-review completion

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

AR by Qi Zhang on behalf of the Authors (21 Jan 2019) Author's response Manuscript

ED: Publish as is (29 Jan 2019) by Eleanor Browne

AR by Qi Zhang on behalf of the Authors (30 Jan 2019)

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Short summary

Regional background aerosols in the western US were studied from a mountaintop observatory during summer. Oxygenated organics and sulfate were dominant aerosol components. However, free tropospheric aerosols were more enriched in sulfate, frequently acidic, and comprised mainly of highly oxidized low-volatility organic species. In contrast, organic aerosols in the boundary-layer-influenced air masses were less oxidized and appeared to be semivolatile.