Mean age of stratospheric air derived from AirCore observations

Engel, Andreas; Bönisch, Harald; Ullrich, Markus; Sitals, Robert; Membrive, Olivier; Danis, Francois; Crevoisier, Cyril

doi:https://doi.org/10.5194/acp-17-6825-2017

Articles | Volume 17, issue 11

https://doi.org/10.5194/acp-17-6825-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/acp-17-6825-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 17, issue 11

Research article

|

12 Jun 2017

Research article |

| 12 Jun 2017

Mean age of stratospheric air derived from AirCore observations

Andreas Engel, Harald Bönisch, Markus Ullrich, Robert Sitals, Olivier Membrive, Francois Danis, and Cyril Crevoisier

Download

Final revised paper (published on 12 Jun 2017)
Preprint (discussion started on 08 Feb 2017)

Interactive discussion

Status: closed

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

- Printer-friendly version

- Supplement

RC1: 'reviewer comment', Darryn Waugh, 03 Mar 2017
- AC1: 'Reply to Review', Andreas Engel, 28 Apr 2017
RC2: 'Review of Engel et al', Eric Ray, 14 Mar 2017
- AC2: 'Reply to Reviewer', Andreas Engel, 28 Apr 2017

Peer-review completion

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

AR by Andreas Engel on behalf of the Authors (28 Apr 2017) Author's response Manuscript

ED: Publish as is (05 May 2017) by Marc von Hobe

AR by Andreas Engel on behalf of the Authors (06 May 2017)

Short summary

AirCore is new technique for sampling stratospheric air. We present new observations of CO₂ and CH₄ using AirCore and derive stratospheric transport time, called the mean age of air. The purpose of using AirCore is to provide a cost-effective tool for deriving mean age. Mean age may serve as a proxy to investigate changes in stratospheric circulation. We show that there is no statistically significant trend in our 40-year time series of mean age, which is now extended using AirCore.