Articles | Volume 19, issue 19
Atmos. Chem. Phys., 19, 12587–12605, 2019
https://doi.org/10.5194/acp-19-12587-2019
Atmos. Chem. Phys., 19, 12587–12605, 2019
https://doi.org/10.5194/acp-19-12587-2019

Research article 09 Oct 2019

Research article | 09 Oct 2019

Estimating background contributions and US anthropogenic enhancements to maximum ozone concentrations in the northern US

David D. Parrish and Christine A. Ennis

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Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by David Parrish on behalf of the Authors (18 Jan 2019)  Author's response    Manuscript
ED: Reject (25 Feb 2019) by Qiang Zhang
ED: Referee Nomination & Report Request started (12 Apr 2019) by Ulrich Pöschl
RR by Anonymous Referee #3 (25 Apr 2019)
RR by Anonymous Referee #4 (08 May 2019)
RR by Anonymous Referee #5 (26 May 2019)
RR by Anonymous Referee #6 (30 May 2019)
ED: Reconsider after major revisions (03 Jun 2019) by Ulrich Pöschl
AR by David Parrish on behalf of the Authors (17 Jul 2019)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (25 Jul 2019) by Ulrich Pöschl
RR by Anonymous Referee #3 (02 Aug 2019)
RR by Anonymous Referee #5 (06 Aug 2019)
RR by Anonymous Referee #4 (06 Aug 2019)
ED: Publish subject to minor revisions (review by editor) (20 Aug 2019) by Ulrich Pöschl
AR by David Parrish on behalf of the Authors (29 Aug 2019)  Author's response    Manuscript
ED: Publish as is (30 Aug 2019) by Ulrich Pöschl
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Short summary
Background ozone transported into cities contributes greatly to urban concentrations. Based on projections of past trends, the largest ozone concentrations on which the 70 ppb National Ambient Air Quality Standard is based will reach that standard by ∼ 2021 in the New York City area but much later (∼ 2050) in the Los Angeles region. The much smaller background contribution in New York City (45.8 ± 1.7 ppb) than in Los Angeles (62.0 ± 2.0 ppb) is the primary reason for this large difference.
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