Abstract
Abstract SYNOPSIS An attempt is made to determine by statistical analysis the degree of validity of the values of solar intensity derived from pyrheliometric or bolometric observations. Both correlation coefficients and the mean dispersion of the data are employed. Certain physical relations are assumed to exist between errorless elements of data and constitute criteria for determining the validity of derived values. Numerous correlation coefficients between both the daily values and the monthly means of solar radiation elements at Mount Wilson are presented. A high negative correlation, averaging −0.55 to −0.60, between the apparent atmospheric transmission coefficient, a and the apparent solar constant, A0, is a feature of all daily pyrheliometric data. This is known to be due to changing transparency between low and high sun observations. A similar high negative correlation both for daily values and monthly means exists between the solar constant, E′0, and the transmission coefficient. Since zero corre...
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