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12 November 2020 Mesoscale variations of hydroxyl rotational temperature from observations at Russian sites
Nikolai M. Gavrilov, Andrej A. Popov, Vladimir I. Perminov, Nikolay N. Pertsev, Irina V. Medvedeva, Petr P. Ammosov, Galina A. Gavrilyeva, Igor I. Koltovskoi
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Proceedings Volume 11560, 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics; 115607W (2020) https://doi.org/10.1117/12.2574795
Event: 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 2020, Moscow, Russian Federation
Abstract
Simple digital filtering is used for studying mesoscale variations of the rotational temperature of excited hydroxyl (OH*) at heights 85 – 90 km according to the data of spectral measurements at observatories Zvenigorod (56°N, 37°E.) in years 2004 – 2016, Tory (52°N, 103°E) in 2012 – 2017 and Maymaga (63°N, 130°E) in 2000 - 2015. Monthly-mean values and standard deviations of OH* temperature disturbances with periods 0.7 – 8 hr are determined, which may reflect the intensity of internal gravity waves in the mesopause region. The filtering of mesoscale variations was performed by calculating the differences between the measured values of OH* temperature separated with time intervals of 0.5 - 2 hr. Seasonal and interannual changes in the mesoscale variances of the temperature at the observational sites are studied.
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Nikolai M. Gavrilov, Andrej A. Popov, Vladimir I. Perminov, Nikolay N. Pertsev, Irina V. Medvedeva, Petr P. Ammosov, Galina A. Gavrilyeva, and Igor I. Koltovskoi "Mesoscale variations of hydroxyl rotational temperature from observations at Russian sites", Proc. SPIE 11560, 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 115607W (12 November 2020); https://doi.org/10.1117/12.2574795
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KEYWORDS
Atmospheric propagation
Radar
Wind energy
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