Articles | Volume 20, issue 11
https://doi.org/10.5194/acp-20-6379-2020
https://doi.org/10.5194/acp-20-6379-2020
Research article
 | 
04 Jun 2020
Research article |  | 04 Jun 2020

Analysis of 24 years of mesopause region OH rotational temperature observations at Davis, Antarctica – Part 1: long-term trends

W. John R. French, Frank J. Mulligan, and Andrew R. Klekociuk

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Short summary
In this study, we analyse 24 years of atmospheric temperatures from the mesopause region (~87 km altitude) derived from ground-based spectrometer observations of hydroxyl airglow at Davis station, Antarctica (68° S, 78° E). These data are used to quantify the effect of the solar cycle and the long-term trend due to increasing greenhouse gas emissions on the atmosphere at this level. A record-low winter-average temperature is reported for 2018 and comparisons are made with satellite observations.
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