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.

Data sets

Rotational temperature studies of the hydroxyl airglow layer above Davis, Antarctica G. Burns and J. French https://data.aad.gov.au/metadata/records/Davis_OH_airglow/

Validation of the Aura Microwave Limb Sounder temperature and geopotential height measurements (https://mls.jpl.nasa.gov) M. J. Schwartz et al. https://doi.org/10.1029/2007jd008783

Overview of the SABER experiment and preliminary calibration results (http://saber.gats-inc.com/data.php) J. M. Russell III, M. G. Mlynczak, L. L. Gordley, J. J. Tansock Jr., and R. W. Esplin https://doi.org/10.1117/12.366382

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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