Articles | Volume 16, issue 19
https://doi.org/10.5194/amt-16-4331-2023
https://doi.org/10.5194/amt-16-4331-2023
Research article
 | 
04 Oct 2023
Research article |  | 04 Oct 2023

OH airglow observations with two identical spectrometers: benefits of increased data homogeneity in the identification of variations induced by the 11-year solar cycle, the QBO, and other factors

Carsten Schmidt, Lisa Küchelbacher, Sabine Wüst, and Michael Bittner

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Cited articles

Ammosov, P., Gavrilyeva, G., Ammosova, A., and Koltovskoi, I.: Response of the mesopause temperatures to solar activity over Yakutia in 1993–2013, Adv. Space Res., 54, 2518–2524, https://doi.org/10.1016/j.asr.2014.06.007, 2014. 
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Baldwin, M. P. and Dunkerton, T. J.: The solar cycle and stratosphere–troposphere dynamical coupling, J. Atmos. Sol-Terr. Phy., 67, 71–82, https://doi.org/10.1016/j.jastp.2004.07.018, 2005. 
Batista, P. P., Takahashi, H., and Clemesha, B. R.: Solar cycle and the QBO effect on the mesospheric temperature and nightglow emissions at a low latitude station, Adv. Space Res., 14, 221–224, https://doi.org/10.1016/0273-1177(94)90139-2, 1994. 
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Short summary
Two identical instruments in a parallel setup were used to observe the mesospheric OH airglow for more than 10 years (2009–2020) at 47.42°N, 10.98°E. This allows unique analyses of data quality aspects and their impact on the obtained results. During solar cycle 24 the influence of the sun was strong (∼6 K per 100 sfu). A quasi-2-year oscillation (QBO) of ±1 K is observed mainly during the maximum of the solar cycle. Unlike the stratospheric QBO the variation has a period of or below 24 months.
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