Effect of atmospheric aerosol on the ground-based observation results of the upper atmosphere radiation
A.V. Mikhalev1, M.A. Tashchlin1, S.M. Sakerin2
1Institute of Solar-Terrestrial Physics of the Siberian Branch of the RAS, 664033, Irkutsk, 126a, Lermontova str.
2V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, 1, Academician Zuev square, Tomsk, 634055, Russia
Keywords: атмосферный аэрозоль, АОТ, излучение верхней атмосферы Земли, atmospheric aerosol, AOD, airglow
Abstract
The study results of the atmospheric aerosol effect on the registered Earth’s airglow are presented. We used data from CIMEL CE-318 automated solar photometer, which is a part of the global terrestrial network (AERONET), and observational data of atomic oxygen emission lines [OI] 557.7 and 630 nm in the Geophysical Observatory of the Institute of Solar-Terrestrial Fhysis SB RAS (52°N, 103°E). The nonlinear dependence of the 557.7 and 630 nm emissions intensity on the aerosol optical depth (AOD) was revealed. An increase in the correlation coefficients was obtained for small AOD values (up to 0.5), and a decrease, for large turbidity. An observation interval with a high positive correlation between the 557.7 and 630.0 nm emission intensities and AOD, which is supposedly associated with extensive areas of forest fires, was identified.
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