The mechanisms and meteorological drivers of the summertime ozone–temperature relationship

Porter, William C.; Heald, Colette L.

doi:https://doi.org/10.5194/acp-19-13367-2019

Articles | Volume 19, issue 21

https://doi.org/10.5194/acp-19-13367-2019

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

https://doi.org/10.5194/acp-19-13367-2019

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

Articles | Volume 19, issue 21

Research article

|

30 Oct 2019

Research article |

| 30 Oct 2019

The mechanisms and meteorological drivers of the summertime ozone–temperature relationship

William C. Porter and Colette L. Heald

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Final revised paper (published on 30 Oct 2019)
Preprint (discussion started on 05 Apr 2019)

Interactive discussion

Status: closed

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

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- Supplement

RC1: 'Review comments', Anonymous Referee #1, 05 May 2019
RC2: 'Review of the manuscript', Anonymous Referee #2, 21 May 2019
AC1: 'Author response', William Porter, 13 Jul 2019

Peer-review completion

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

AR by William Porter on behalf of the Authors (13 Jul 2019) Manuscript

ED: Referee Nomination & Report Request started (01 Aug 2019) by Federico Fierli

RR by Anonymous Referee #1 (15 Aug 2019)

Suggestions for revision or reasons for rejection

The manuscript provides an interesting investigation on the causes of ozone concentration correlation with atmospheric temperature. This correlation has relevant implications connected to the climate change trends that is expected to increase future surface ozone concentrations. The manuscript provides a useful evaluation of the influence of the temperature depending emissions and chemical model mechanisms in comparison with the other temperature related meteorological forcings. They underline that an incomplete analysis could underestimate the climate forcing effect on ozone expectable increase.

The Authors duly answered to all the Reviewers’ comments and requests integrating the manuscript with the required clarifications.
The manuscript should be published after applying minor suggested corrections.

Suggested corrections

2 Model Description
Page 3
Lines 20
The reference “Amos et al. (2012)” it is not included in the paper references. Please crosscheck references and citations.
Page 5
Line 4
The word “remaining” should be probably canceled in the sentence “…remaining uncertainties remain…” or the sentence should be rephrased to clarify it.

4 Results and Discussion
Page 10
Line 21
The second “Shared” word probably doesn’t need capital initial letter or maybe the sentence should be modified.

Tables
Tables 1 and 2 are not cited in the paper text. Their citation should be added or the tables removed if the Authors and the Editor do not consider them useful.

Answers to Reviewer 1
1.4 Underestimation of soil NOx
The short summary of Vinken findings mentioned in the Authors’ answer the Reviewer 1 question can be added to the manuscript at Pag 4 around lines 19-22 to make this concept more clear in the paper text.

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RR by Anonymous Referee #2 (13 Sep 2019)

ED: Publish subject to technical corrections (19 Sep 2019) by Federico Fierli

AR by William Porter on behalf of the Authors (25 Sep 2019) Author's response Manuscript

Short summary

In this paper we explore the connection between changes in surface temperature and changes in ozone pollution. While explanations for this connection have been proposed in the past, we attempt to better quantify them using models and statistics. We find that some of the most commonly cited mechanisms, including biogenic emissions and temperature-dependent chemical processes, can explain less than half of the O₃–T correlation. Meteorology is identified as the most likely driver for the remainder.