Seasonal variability of surface and column carbon monoxide over the megacity Paris, high-altitude Jungfraujoch and Southern Hemispheric Wollongong stations

Té, Yao; Jeseck, Pascal; Franco, Bruno; Mahieu, Emmanuel; Jones, Nicholas; Paton-Walsh, Clare; Griffith, David W. T.; Buchholz, Rebecca R.; Hadji-Lazaro, Juliette; Hurtmans, Daniel; Janssen, Christof

doi:https://doi.org/10.5194/acp-16-10911-2016

Articles | Volume 16, issue 17

https://doi.org/10.5194/acp-16-10911-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/acp-16-10911-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 16, issue 17

Research article

|

05 Sep 2016

Research article |

| 05 Sep 2016

Seasonal variability of surface and column carbon monoxide over the megacity Paris, high-altitude Jungfraujoch and Southern Hemispheric Wollongong stations

Yao Té, Pascal Jeseck, Bruno Franco, Emmanuel Mahieu, Nicholas Jones, Clare Paton-Walsh, David W. T. Griffith, Rebecca R. Buchholz, Juliette Hadji-Lazaro, Daniel Hurtmans, and Christof Janssen

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Final revised paper (published on 05 Sep 2016)
Supplement to the final revised paper
Preprint (discussion started on 08 Mar 2016)

Interactive discussion

Status: closed

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

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- Supplement

RC1: 'Manuscript entitled 'seasonal variation of surface and column carbon monoxide...' published 05 March 2016', Anonymous Referee #1, 05 Apr 2016
- AC1: 'Answers to the referees' comments', Y. TE, 15 Jun 2016
RC2: 'Review of Té et al.', Anonymous Referee #2, 13 Apr 2016
- AC2: 'Answers to the referees' comments', Y. TE, 15 Jun 2016

Peer-review completion

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

AR by Yao Té on behalf of the Authors (15 Jun 2016) Manuscript

ED: Referee Nomination & Report Request started (17 Jun 2016) by Paul Wennberg

RR by Anonymous Referee #1 (30 Jun 2016)

RR by Anonymous Referee #2 (09 Jul 2016)

Suggestions for revision or reasons for rejection

The authors have provided a point-by-point response to two reviews of the original manuscript. They have generally addressed all of the specific comments and technical corrections raised in my review and have improved the manuscript. They have chosen not to show all of the averaging kernels suggested but do include one figure for Paris-FTS and IASI – this is sufficient. The manuscript still has many distracting grammatical errors that should be corrected; a few are included below but the authors should carefully proofread the manuscript prior to resubmission. I recommend publication after minor technical corrections are completed.

Line numbers below refer to the revised manuscript showing tracked changes.

Technical Corrections

Page 2, line 49 – From THE end of 1980 until 1997, CO decreased.

Page 2, line 50 – Since then, a few

Page 2, line 51 – unusualLY

Page 3, line 64 – give the Bruker model, as done for the other two sites immediately below

Page 7, line 209 – should be “degrees of freedom for signal (DOFS)” here, and DOFS should replace DOF throughout the paper

Page 8, line 240 – which version of WACCM?

Page 9, line 209 – fix this sentence

Page 10, line 296 – on-board NASA’s Terra …

Page 15, line 449 – delete colour

Page 15, line 456 – interpolated the lower pressure levels ONTO thinner

Page 17, line 507 – Figure/Fig. 5

Page 17, line 508 – delete points and point

Page 18, line 2 of caption – comeS

Page 19, line 526 – downwind

Page 20, line 566 – low-altitude

Page 21, line 1 of caption – Monthly averaged CO in situ …

Page 21, line 2 of caption – green squares for the means of the four urban sites

Page 21, line 3 of caption – is applied to the 5-year monthly means for urban (green line) and mountain (red line) sites.

Page 21, line 4 of caption – The two lowermost datasets show …

Page 21, line 583 – change close-by to nearby

Page 24, line 650 – timescale THAN complete

Page 24, line 640 – state explicitly whether this time lag is seen in the measurements, or in the measurements and GEOS-Chem

Page 25, line 655 – instruments are capable of SAMPLING the …

Page 33, Table 5 caption – Ground-based FTIR instrument parameters for the three measurement stations.

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ED: Publish subject to technical corrections (14 Jul 2016) by Paul Wennberg

AR by Yao Té on behalf of the Authors (22 Jul 2016) Author's response Manuscript

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Short summary

This paper studies the seasonal variation of surface and column CO at three different sites (Paris, Jungfraujoch and Wollongong), with an emphasis on establishing a link between the CO vertical distribution and the nature of CO emission sources. We find the first evidence of a time lag between surface and free tropospheric CO seasonal variations in the Northern Hemisphere.