Appearance of light-scattering layers in the thermosphere of Kamchatka during the autumn of 2017

V. V. Bychkov; A. S. Perezhogin; I. N. Seredkin; B. M. Shevtsov

doi:10.1117/12.2504539

13 December 2018 Appearance of light-scattering layers in the thermosphere of Kamchatka during the autumn of 2017

V. V. Bychkov, A. S. Perezhogin, I. N. Seredkin, B. M. Shevtsov

Proceedings Volume 10833, 24th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 10833A4 (2018) https://doi.org/10.1117/12.2504539
Event: XXIV International Symposium, Atmospheric and Ocean Optics, Atmospheric Physics, 2018, Tomsk, Russian Federation

Abstract

The results of two-frequency lidar sounding of the atmosphere from the altitudes of 100-400 km are presented. The data were obtained in 2017 at a lidar site located in Kamchatka. One lidar channel is applied to investigate the aerosol formations in the middle atmosphere and to record the resonance scattering on excited ions of atomic nitrogen in the upper atmosphere. Nd:YAG laser operating on the wavelength of 532 nm is used in this channel. A dye laser with tunable frequency is applied in the second channel. The wavelength of 561.1 nm corresponds to the chosen dipole transition between the excited states of atomic oxygen. Defined light-scattering layers were discovered in the region of 200-400 km. They are caused by presence of excited states atomic oxygen and nitrogen ions. The possibility of reconstruction of excited ions Nh-profile and determination of precipitated electron fluxes by the lidar method are shown.

Citation Download Citation

V. V. Bychkov, A. S. Perezhogin, I. N. Seredkin, and B. M. Shevtsov "Appearance of light-scattering layers in the thermosphere of Kamchatka during the autumn of 2017", Proc. SPIE 10833, 24th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 10833A4 (13 December 2018); https://doi.org/10.1117/12.2504539

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