Studying MLT temperature and composition during stratospheric warming events from spectrometric observations of OH (6-2) airglow emission at mid-latitudes

Irina Medvedeva; Anatoly Semenov

doi:10.1117/12.2504553

13 December 2018 Studying MLT temperature and composition during stratospheric warming events from spectrometric observations of OH (6-2) airglow emission at mid-latitudes

Irina Medvedeva, Anatoly Semenov

Author Affiliations +

Proceedings Volume 10833, 24th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 10833A6 (2018) https://doi.org/10.1117/12.2504553
Event: XXIV International Symposium, Atmospheric and Ocean Optics, Atmospheric Physics, 2018, Tomsk, Russian Federation

Abstract

We present the results of studying the temperature regime and the composition of the mid-latitude atmosphere at the mesopause heights during the periods of minor and final stratospheric warmings in February-March 2016. We used the data from the spectrometric observations of the hydroxyl emission at the Geophysical Observatory (Tory, 51.8°N, 103.1°E ) of the Institute of Solar-Terrestrial Physics (Irkutsk) and at Zvenigorod station (55.7º N, 36.8º E) of the A.M. Obukhov Institute of Atmospheric Physics (Moscow). The technique for calculating the concentrations of atomic oxygen and ozone at the OH emission layer using experimental data on the emission intensity and rotational temperature of the OH molecule, the photochemical model of OH radiation, and MSISE-E-90 model is described. It was found, that during the periods of analyzed stratospheric warmings significant, up to 250%, variations in the OH emission intensity and concentrations of atomic oxygen and ozone in the mesopause region were observed. The longitudional differences in the effects of the stratospheric warmings on the characteristics of the mesopause region were revealed.

Citation Download Citation

Irina Medvedeva and Anatoly Semenov "Studying MLT temperature and composition during stratospheric warming events from spectrometric observations of OH (6-2) airglow emission at mid-latitudes", Proc. SPIE 10833, 24th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 10833A6 (13 December 2018); https://doi.org/10.1117/12.2504553

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