Climatology and long-term evolution of ozone and carbon monoxide in the upper troposphere–lower stratosphere (UTLS) at northern midlatitudes, as seen by IAGOS from 1995 to 2013

Cohen, Yann; Petetin, Hervé; Thouret, Valérie; Marécal, Virginie; Josse, Béatrice; Clark, Hannah; Sauvage, Bastien; Fontaine, Alain; Athier, Gilles; Blot, Romain; Boulanger, Damien; Cousin, Jean-Marc; Nédélec, Philippe

doi:https://doi.org/10.5194/acp-18-5415-2018

Articles | Volume 18, issue 8

https://doi.org/10.5194/acp-18-5415-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Quadrennial Ozone Symposium 2016 – Status and trends...

https://doi.org/10.5194/acp-18-5415-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 8

Research article

|

20 Apr 2018

Research article |

| 20 Apr 2018

Climatology and long-term evolution of ozone and carbon monoxide in the upper troposphere–lower stratosphere (UTLS) at northern midlatitudes, as seen by IAGOS from 1995 to 2013

Yann Cohen, Hervé Petetin, Valérie Thouret, Virginie Marécal, Béatrice Josse, Hannah Clark, Bastien Sauvage, Alain Fontaine, Gilles Athier, Romain Blot, Damien Boulanger, Jean-Marc Cousin, and Philippe Nédélec

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Final revised paper (published on 20 Apr 2018)
Preprint (discussion started on 19 Sep 2017)

Interactive discussion

Status: closed

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

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RC1: 'Review of Yann et al', Anonymous Referee #1, 22 Oct 2017
RC2: 'Anonymous review of acp-2017-778', Anonymous Referee #2, 28 Oct 2017
AC1: 'AC: Answer to Referees' Comments', Yann Cohen, 24 Jan 2018

Peer-review completion

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

AR by Yann Cohen on behalf of the Authors (02 Feb 2018) Author's response Manuscript

ED: Referee Nomination & Report Request started (20 Feb 2018) by Sophie Godin-Beekmann

RR by Anonymous Referee #1 (04 Mar 2018)

ED: Publish subject to technical corrections (16 Mar 2018) by Sophie Godin-Beekmann

Short summary

Measurements of ozone and carbon monoxide were performed during 1994–2013 around the tropopause on board commercial aircraft. Seasonal cycles and trends were calculated above eight well-sampled regions in Northern Hemisphere midlatitudes. CO shows decreasing concentrations over the last 10 years, thus reflecting the impact of the legislation on anthropogenic emissions. Ozone amounts increased over the 20 years in the upper troposphere during different seasons, depending on the longitudes.