Changes in molecular oxygen and hydroxyl airglow of the mesosphere and lower thermosphere as observed at Zvenigorod in 2000-2019

According to the ground-based spectral observations of airglow emissions in the near infrared at Zvenigorod in 2000-2019, multi-year changes in the intensity of O2A(0-1) band at 865 nm and OH(6-2) band at 840 nm are studied. It was shown that the intensities of both the emissions had a significant negative long-term time trend and a positive response to the change of solar activity in the 11-year cycle. In the spectrum of their interannual harmonic variations, statistically significant quasi-decade and quasi-two-decade oscillations were found.

[1]  J. Woithe,et al.  Seasonal variations of the nighttime O(1S) and OH (8‐3) airglow intensity at Adelaide, Australia , 2014 .

[2]  N. Lomb.  Least-squares frequency analysis of unequally spaced data , 1976 .

[3]  R. Wiens,et al.  Diurnal, annual and solar cycle variations of hydroxyl and sodium nightglow intensities in the Europe-Africa sector , 1973 .

[4]  N. N. Shefov,et al.  Airglow as an Indicator of Upper Atmospheric Structure and Dynamics , 2008 .

[5]  J. Scargle.  Studies in astronomical time series analysis. II - Statistical aspects of spectral analysis of unevenly spaced data , 1982 .

[6]  C. Savigny,et al.  Variability of OH(3-1) and OH(6-2) emission altitude and volume emission rate from 2003 to 2011 , 2017 .

[7]  K. Lipatov.  Empirical model of variations in the IR Atmospheric system of molecular oxygen: 2. Emitting layer height , 2013, Geomagnetism and Aeronomy.

[8]  S. Kimeswenger,et al.  15 years of VLT/UVES OH intensities and temperatures in comparison with TIMED/SABER data , 2017, 1705.07239.

[9]  Jiyao Xu,et al.  The responses of the nightglow emissions observed by the TIMED/SABER satellite to solar radiation , 2016 .

[10]  N. N. Shefov.  Hydroxyl emission of the upper atmosphere—I: The behaviour during a solar cycle, seasons and geomagnetic disturbances , 1969 .

[11]  A. T. Stair,et al.  Rocket measurements of the altitude distributions of the hydroxyl airglow. , 1988 .

[12]  D. Peters,et al.  Observational evidence for a quasi-bidecadal oscillation in the summer mesopause region over Western Europe , 2018, Journal of Atmospheric and Solar-Terrestrial Physics.

[13]  V. Perminov,et al.  Response of the mesopause airglow to solar activity inferred from measurements at Zvenigorod, Russia , 2008 .

[14]  Manuela Herman,et al.  Aeronomy Of The Middle Atmosphere , 2016 .

[15]  N. I. Fedorova.  Hydroxyl Emission of the Upper Atmosphere. , 1960 .

[16]  N. Pertsev,et al.  Updated Long‐Term Trends in Mesopause Temperature, Airglow Emissions, and Noctilucent Clouds , 2020, Journal of Geophysical Research: Atmospheres.