USE AND EVALUATION OF BIOLOGICAL SPECTRAL UV WEIGHTING FUNCTIONS FOR THE OZONE REDUCTION ISSUE - Environmental UV Radiation: Impact on Ecosystems and Human Health and Predictive Models - page 69

Figure 1. Solar radiation attenuation processes in the atmosphere as a function of wavelength. Each of the four
processes that attenuate direct beam solar radiation are represented for a standard atmospheric thickness as
would be encountered under cloudless sky conditions with minimal atmospheric aerosols. Ozone absorption is
the product of the ozone absorption coefficient [4] and a standard atmospheric ozone thickness of 0.300 atm
cm as is typical of temperate latitudes during summer. Scattering by air molecules and aerosols, as well as
aerosol absorption, are represented from the data presented by Dave and Halpern [5]. From Caldwell [6].