Articles | Volume 21, issue 12
Atmos. Chem. Phys., 21, 9839–9857, 2021
https://doi.org/10.5194/acp-21-9839-2021
Atmos. Chem. Phys., 21, 9839–9857, 2021
https://doi.org/10.5194/acp-21-9839-2021

Research article 01 Jul 2021

Research article | 01 Jul 2021

Contributions of equatorial waves and small-scale convective gravity waves to the 2019/20 quasi-biennial oscillation (QBO) disruption

Min-Jee Kang and Hye-Yeong Chun

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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-2021-85', Anonymous Referee #1, 24 Mar 2021
    • CC1: 'Reply on RC1', Min-Jee Kang, 25 Mar 2021
  • RC2: 'Comment on acp-2021-85', Anonymous Referee #2, 30 Mar 2021
    • CC2: 'Reply on RC2', Min-Jee Kang, 31 Mar 2021
  • AC1: 'Response to Reviewers' Comments', Hye-Yeong Chun, 06 May 2021

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Hye-Yeong Chun on behalf of the Authors (06 May 2021)  Author's response    Author's tracked changes    Manuscript
ED: Publish as is (02 Jun 2021) by Peter Haynes
AR by Hye-Yeong Chun on behalf of the Authors (03 Jun 2021)  Author's response    Manuscript
Short summary
In winter 2019/20, the westerly quasi-biennial oscillation (QBO) phase was disrupted again by easterly winds. It is found that strong Rossby waves from the Southern Hemisphere weaken the jet core in early stages, and strong mixed Rossby–gravity waves reverse the wind in later stages. Inertia–gravity waves and small-scale convective gravity waves also provide negative forcing. These strong waves are attributed to an anomalous wind profile, barotropic instability, and slightly strong convection.
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