Effect of changes in ozone amount on the ultraviolet radiation received at sea level of a model atmosphere
Results of numerical simulation of the spectral distribution of the direct solar energy and diffuse skylight energy incident upon a horizontal flat surface located at the bottom of a one-dimensional atmospheric model are presented as a function of wavelength, solar zenith angle, Lambert reflectivity of the underlying surface, and ozone amount. These computations were carried out after taking into account all orders of scattering and appropriate absorption by molecules and aerosols. The height distributions of ozone and aerosol particles used in these models correspond to those observed in the mid-latitude region. A given decrease in the atmospheric ozone content results in a strong increase in the direct component, but in a relatively moderate increase in the diffuse component. Furthermore, variations in the changes in the diffuse component with ozone amount show some interesting features which are not present in the corresponding variations for the direct component.