Statistical study on the temporal correlation of different solar parameters with OI 6300 Å line intensity over Calcutta and its implications

Abstract

The statistical analysis for the correlation between each of three solar parameters (i.e 10.7 cm solar flux, relative sunspot number and solar flare number) and the airglow OI<b> </b>6300 Å line intensity at Calcutta is presented. As strong correlations amongst the running averages of monthly mean values of all four parameters are found to exist, both in the descending and peak phases of the 21^st solar cycle, empirical equations connecting annual running averages of the OI<b> </b>6300 Å line intensity with annual running averages of the various solar parameters have been found out. The variable parts of the parameters, which are defined here as the original values (raw data) minus the running average value for a particular year, show their periodicity, particularly, in airglow OI<b> </b>6300 Å line intensity.