太陽紫外放射の変動解析

概要

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Solar ultraviolet-B (290-320nm : UV-B), ultraviolet-A (320-400nm : UV-A) and Total (300-3000nm) irradiances on the ground had been measured at Shonan Campus of Tokai University, Hiratsuka (35°N) for two years from October 1990 to September 1992,using the UV-B radiometers developed by us, conventional UV-A radiometers and pyranometers. Daily, monthly and annual variations in UV-B, UV-A and Total irradiances were analyzed. The UV-B irradiance clearly demonstrates behaviors different from those of the UV-A and Total irradiances. For instance, the UV-B irradiance shows larger scattering (∿80% on the basis of a 24 month average), larger daily and seasonal variations, and higher dependency on air mass as compared with the UV-A and Total irradiances. The two-year average ratios of daily integrated UV-B/UV-A/Total irradiances were to be 0.14/4.1/100.
東海大学の論文