New experimental data which confirm episodic occurrence of the correlation of light backscattering lidar signals from a 150–300 km altitude region with the plasma content in the nighttime F 2 layer of the ionosphere are presented. Analysis results of lidar observation data for 2008–2014 are given. A conclusion is drawn that these correlations occur when additional sources for ionosphere ionization appear. A hypothesis is discussed that the resonance scattering by excited atomic nitrogen ions is a possible cause of generation of these signals.
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V. V. Bychkov, Yu. A. Nepomnyashchiy, A. S. Perezho-gin, and B. M. Shevtsov, “Lidar returns from the upper atmosphere of Kamchatka on observations in 2008–2014,” Earth, Planets Space 66 (150) (2014). doi 10.1186/s40623-014-0150-6
Original Russian Text © V.V. Bychkov, Yu.F. Nepomnyashchii, A.S. Perezhogin, B.M. Shevtsov, 2015, published in Optika Atmosfery i Okeana.
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Bychkov, V.V., Nepomnyashchii, Y.F., Perezhogin, A.S. et al. Lidar returns from the upper atmosphere and possible causes of their generation. Atmos Ocean Opt 28, 303–307 (2015). https://doi.org/10.1134/S1024856015040041