Persistence of upper stratospheric wintertime tracer variability into the Arctic spring and summer

Siskind, David E.; Nedoluha, Gerald E.; Sassi, Fabrizio; Rong, Pingping; Bailey, Scott M.; Hervig, Mark E.; Randall, Cora E.

doi:https://doi.org/10.5194/acp-16-7957-2016

Articles | Volume 16, issue 12

https://doi.org/10.5194/acp-16-7957-2016

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

https://doi.org/10.5194/acp-16-7957-2016

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

Articles | Volume 16, issue 12

Research article

|

30 Jun 2016

Research article |

| 30 Jun 2016

Persistence of upper stratospheric wintertime tracer variability into the Arctic spring and summer

David E. Siskind, Gerald E. Nedoluha, Fabrizio Sassi, Pingping Rong, Scott M. Bailey, Mark E. Hervig, and Cora E. Randall

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Final revised paper (published on 30 Jun 2016)
Preprint (discussion started on 29 Jan 2016)

Interactive discussion

Status: closed

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

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RC1: 'Review of "Persistence of upper stratospheric winter time tracer variability into the Arctic spring and summer", by Siskind et al. (ACPD-2015-1037)', Anonymous Referee #2, 10 Apr 2016
- RC2: 'Correction to "Interactive Comment", reviewer #2', Anonymous Referee #2, 10 Apr 2016
RC3: 'Review for “Persistence of upper stratospheric winter time tracer variability into the Artic spring and summer” by Siskind et al., submitted to ACP', Anonymous Referee #1, 18 Apr 2016
AC1: 'response to reviewer comments', David Siskind, 05 May 2016

Peer-review completion

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

AR by David Siskind on behalf of the Authors (12 May 2016) Author's response Manuscript

ED: Referee Nomination & Report Request started (13 May 2016) by Farahnaz Khosrawi

RR by Anonymous Referee #1 (30 May 2016)

ED: Publish subject to technical corrections (30 May 2016) by Farahnaz Khosrawi

Dear author,

please find enclosed a referee report on the revised version of your manuscript. Your paper will be ready for publication in ACP after considering the technical corrections given by the referee and the technical corrections given by me below.

Best regards, Farahnaz Khosrawi

Technical corrections:
P1, L1: I would suggest to rephrase the first sentence of the abstract to “ Using data from the Aeronomy of Ice in the mesosphere instrument (AIM) and the instruments on board the Aura satellite, we......”.

P1, L4: This sentence should be rephrased so that it becomes more clear what you actually mean. Do you mean that in a year with strong descent (in winter?) is followed by a dynamically quiet spring in the same year or is a year with strong descent followed by a year which is dynamically quiet?

P1, L7: I would suggest to add Aura/MLS in brackets.

P1, L7-8: Same here for AIM/SOFIE.

General: Abbreviations of chemical species are only in a few occasions introduced. This should be corrected throughout the manuscript. Further, abbreviations or names of species are used in a inconsistent way as e.g. on P2, l31 and P3, l61. See my comments below.

P2, L31: '…...nitric oxide and depleted in water vapor and CH4......' abbreviations/names of species should be used in a consistent manner.

P4,L97: Round brackets instead of squared.

P4, L100: space after bracket obsolete.

P4, L101: What do you mean with 'model climate'? I guess you mean rather the model dynamics or set-up. Please rephrase the sentence.

Section3: Numbering of subsections in section 3 is not correct. It should read 3.1, 3.2 …...instead of 3.0.1, 3.0.2. and so on.

Section3 headings: It should be consistently CH4, ClO and O3 or Methane, Chlorine monoxide and Ozone and not a mixture of abbreviations and names of the species. For section headings I would prefer that the names of the species are used instead of the abbreviations (or both together as e.g. Methane (CH4)).

P4, L121: Please add which year are analyses. Are only the years in Fig1 and 2 analysed or more years?

P5, L137: I guess 2014 should read 2013 since in Fig. 1 2014 is not shown.

P6, L184: It should read 'at 1.47 hPa' instead of 'a 1.47 hPa'

P7, L204: Reference should be in round brackets instead of squared.

P7, L209: Please write 'August' instead of just 'Aug'.

P8, L252: Reference should be in round brackets instead of squared.

P8, L255: One full stop is obsolete.

P8, L260: Space before full stop obsolete.

P10: Headings Appendix A und A1 are obsolete.

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AR by David Siskind on behalf of the Authors (31 May 2016) Author's response Manuscript

Short summary

The strong descent of wintertime mesospheric air into the stratosphere has been of great recent interest. Here, we show that because mesospheric air is depleted in methane, it implies that chlorine will be found more in its active form, chlorine monoxide. This is a new way for mesosphere/stratosphere coupling to affect ozone. Second, these effects seem to persist longer than previously thought. Studies of the summer upper stratosphere should consider the conditions from the previous winter.