Articles | Volume 21, issue 11
Atmos. Chem. Phys., 21, 8393–8412, 2021
https://doi.org/10.5194/acp-21-8393-2021

Special issue: The SPARC Reanalysis Intercomparison Project (S-RIP) (ACP/ESSD...

Atmos. Chem. Phys., 21, 8393–8412, 2021
https://doi.org/10.5194/acp-21-8393-2021

Research article 02 Jun 2021

Research article | 02 Jun 2021

The stratospheric Brewer–Dobson circulation inferred from age of air in the ERA5 reanalysis

Felix Ploeger et al.

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Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on acp-2020-1253', Anonymous Referee #1, 09 Feb 2021
    • AC1: 'Reply on RC1', Felix Ploeger, 07 Apr 2021
    • AC2: 'Reply on RC1', Felix Ploeger, 07 Apr 2021
  • RC2: 'Timely and useful paper - comparisons with obs should be better discussed', Simon Chabrillat, 21 Feb 2021

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Felix Ploeger on behalf of the Authors (07 Apr 2021)  Author's response    Author's tracked changes    Manuscript
ED: Publish subject to minor revisions (review by editor) (24 Apr 2021) by Peter Haynes
AR by Felix Ploeger on behalf of the Authors (26 Apr 2021)  Author's response    Author's tracked changes    Manuscript
ED: Publish as is (27 Apr 2021) by Peter Haynes
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Short summary
We investigate the global stratospheric circulation (Brewer–Dobson circulation) in the new ECMWF ERA5 reanalysis based on age of air simulations, and we compare it to results from the preceding ERA-Interim reanalysis. Our results show a slower stratospheric circulation and higher age for ERA5. The age of air trend in ERA5 over the 1989–2018 period is negative throughout the stratosphere, related to multi-annual variability and a potential contribution from changes in the reanalysis system.
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