Articles | Volume 20, issue 14
Atmos. Chem. Phys., 20, 8691–8708, 2020
https://doi.org/10.5194/acp-20-8691-2020
Atmos. Chem. Phys., 20, 8691–8708, 2020
https://doi.org/10.5194/acp-20-8691-2020

Research article 22 Jul 2020

Research article | 22 Jul 2020

Analysis of 24 years of mesopause region OH rotational temperature observations at Davis, Antarctica – Part 2: Evidence of a quasi-quadrennial oscillation (QQO) in the polar mesosphere

W. John R. French et al.

Download

Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by John French on behalf of the Authors (15 May 2020)  Author's response
ED: Referee Nomination & Report Request started (26 May 2020) by Franz-Josef Lübken
ED: Publish as is (10 Jun 2020) by Franz-Josef Lübken
AR by John French on behalf of the Authors (11 Jun 2020)  Author's response    Manuscript
Short summary
We explore a quasi-quadrennial oscillation (QQO; 3–4 K amplitude, ~ 4-year period) in mesopause region temperatures observed in 24 years of hydroxyl airglow measurements over Davis, Antarctica (68° S, 78° E). Correlation and composite analysis using meteorological reanalysis and satellite data reveals complex patterns on the QQO timescale in both hemispheres. Modulation of the meridional circulation, linked to the propagation of gravity waves, plays a significant role in producing the QQO response.
Altmetrics
Final-revised paper
Preprint