Surface ultraviolet radiation

Abstract One of the main concerns regarding a decrease in stratospheric ozone is the consequential increasein the amount of ultraviolet (UV) radiation that reaches the lower atmosphere and the Earth's surface. Radiationat UV wavelengths where ozone absorbs strongly is detrimental to most biological species, including humanbeings, so a decrease in stratospheric ozone could have a significant impact on the biosphere. This concern hasled to a significant increase in surface UV radiation research over the last two decades since the ratification ofthe Montreal Protocol. Studies include investigations into understanding the complicated absorption and scatteringprocesses involved in the radiative transfer of UV through the atmosphere as well as research on theimpacts of changes in UV radiation. Factors affecting surface UV radiation will be discussed, resources used tostudy surface UV radiation will be described and progress made in our understanding of surface UV radiationover the past two decades will be reviewed.