Near ultraviolet radiation at the earth's surface: measurements and model comparisons

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Abstract
A 3-year record of simultaneous measurements of daily ultraviolet (≅0.290-0.380 μm) and total global solar (≅ 0.290-2.9μm) irradiations at Corvallis. Oregon. USA (44°34'N, 123° 14'W: 65.5 m) has been analyzed to determine whether any systematic relationship exists between the two. Regression of the ultraviolet (UV) radiation on the total global (G)so lar radiation yields coefficients of determination in excess of 0.980: the mean value of 0.054 (s.d.: 0.008) for the ratio UV/G that we obtain is within the range of values reported by other investigators based on measurements of different record lengths and averaged over different time periods. Comparison of the measured. clear-day noon irradiances with computed values in vertically inhomogeneous turbid atmospheric models with ozone, aerosols and surface albedo as variable parameters. shows agreement between experiment and theory to within ± 10%. DOI: 10.1111/j.1600-0889.1984.tb00248.x