Estimating atmospheric transparency during darkness based on data from all-sky cameras with a narrow spectral range
Beletsky A.B.1, Taschilin M.A.1, Yakovleva I.P.1, Devyatova E.V.1, Podlesny S.V.1, Vasiliev R.V.1, Tatarnikov A.V.1, Lebedev V.P.1
1Institute of solar-terrestrial physics of Siberian branch of Russian academy of sciences, Irkutsk, Russia
Email: miketash@iszf.irk.ru
This paper presents a methodology for assessing the transparency of the Earth's atmosphere at night using all-sky imagers with a narrow spectral range, designed to record the spatial distribution of the intensity of emissions from the Earth's upper atmosphere. The imagers operate in monitoring mode at the Geophysical Observatory of the Institute of Solar-Terrestrial Physics (Tory, Buryatia, 51o48'N, 103o04'E). The developed methodology is currently being used to address a number of problems, including: assessing atmospheric transparency at night; relative calibration of all-sky imagers using "reference" clear nights; obtaining additional information for interpreting data on the spatial distribution of atmospheric emission intensity and evaluating criteria for identifying traveling wave disturbances. In the future, it is planned to improve this method by optimizing the calculation algorithm, using more modern star catalogs, and verifying the absolute calibration of the all-sky imagers used. Keywords: atmospheric emissions, atmospheric extinction, all-sky imagers, Aeronet, atmospheric transparency.
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