Abstract
The paper presents the covariation of seasonal intensity values of 5893 A and 5577 A lines of night airglow emissions and seasonal values of ozone concentration at Calcutta (Kolkata) with relative sunspot number, solar ultraviolet flux and solar 10.7 cm wavelength radio flux during the years 1984, 1985 and 1987. Various statistical parameters including coefficients of correlation between the atmospheric and solar quantities are computed. Possible explanation for the covariation of the quantities is provided invoking the excitation mechanisms and chemical reactions underlying them.
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