Articles | Volume 20, issue 11
Atmos. Chem. Phys., 20, 6379–6394, 2020
https://doi.org/10.5194/acp-20-6379-2020
Atmos. Chem. Phys., 20, 6379–6394, 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 et al.

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Subject: Radiation | Research Activity: Remote Sensing | Altitude Range: Mesosphere | Science Focus: Physics (physical properties and processes)
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Cited articles

Akmaev, R. A., Fomichev, V. I., and Zhu, X.: Impact of middle-atmospheric composition changes on greenhouse cooling in the upper atmosphere, J. Atmos. Sol.-Terr. Phys., 68, 1879–1889, https://doi.org/10.1016/j.jastp.2006.03.008, 2006. 
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Azeem, S. M. I., Sivjee, G. G., Won, Y.-I., and Mutiso, C.: Solar cycle signature and secular long-term trend in OH airglow temperature observations at South Pole, Antarctica, J. Geophys. Res.-Sp. Phys., 112, A01305, https://doi.org/10.1029/2005JA011475, 2007. 
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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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