Abstract
Solar ultraviolet radiation was monitored by a UV radiometer: EPPLEY TUVR, which is used commonly around the world, at exposure site in Tsukuba for a year. Daily amount of solar UV radiation (285-395nm) were expressed as a function of daily amount of radiation (305-2800nm) and solar elevation angle at solar noon. Introducing the observed solar radiation at 66 points around Japan for 1976-1990, the yearly total of solar UV dose was obtained and plotted on the map. In order to be referred in the studies of polymeric materials exposed outdoors both in Japan and other areas, daily/monthly data were compiled in the database to be accessed from the personal computer systems.
