Night sky brightness and intrinsic emission of the upper atmosphere in East Siberia region after Chelyabinsk meteorite fall

Results of observation of night sky brightness and intrinsic emission of the upper atmosphere in OI 557.7 nm emission in East Siberia region after Chelyabinsk meteorite fall are presented. One can note an increase in night sky brightness (up to 50 % relative to previous nights) during first two nights after the fall. The effect can be explained by the transport of meteoroid explosion products at stratospheric heights over large distances taking into account zonal wind directions at these heights. The analysis of variations of mesospheric OI 557.7 nm emission intensity during the first night after the meteoroid fall showed the changes in the emission characteristics usually registered after earthquakes (decrease of the mean night intensity of 557.7 nm emission, changes in night course, etc).