Radiative impacts of ozone and other radiatively active components.

Radiative transfer calculations have been performed with two models of infrared radiation (broad band and line-by-line) and one model for ultraviolet and visible radiation (discrete ordinate method). The calculations are aimed at quantifying the radiative effects of radiatively active gases, in particular ozone. Seasonal variations and trends in the the radiative forcing due to presence of ozone in the atmosphere is studied, based on observed ozone profiles from ozone soundings at selected Nordic locations.