Ozone related spectral measurements of total solar radiation

Abstract

For four years measurements of solar radiation have been made with an instrument which observes the sky radiance in two spectral regions. The measured incident radiation is independent of the direction. Formulas are derived which allow to conclude the daily sun intensity in one region, knowing the measured intensity in the other region. The effect of ozone is noticeable in the difference between the measured and computed values in an ozone-absorbing region. The optical behaviour of the atmosphere can be defined by parameterization of extinction effects. From this one can conclude the intensity of any other spectral region and thus define selective influences of other absorbing gases like air-polluting constituents.