Ultraviolet Radiation Albedo of Natural Surfaces/Natūralių Paviršių Ultravioletinės Spinduliuotės Albedas/Альбедо Ультрафиолетового Излучения Натуральных Поверхностей

Abstract

Abstract. This article presents measurement results of intensity of solar UVA and UVB radiation, as well as UV radiation albedo from various surfaces. The intensity of albedo was measured from natural surfaces, such as: sand, grass, water, and snow. The paper also presents measurements of solar emitted UVA and UVB radiation intensity in the shadow. Ultraviolet radiation intensity and surface albedo was measured using a handy UVA radiation radiometer UVA -365HA, with spectral response of 320-390 nm and a handy UVB radiation radiometer PMA2201, with spectral response of 280-320 nm. The results of measurements show that snow has the maximum albedo -from 50 to 60 per cent, sand -10 per cent, and the minimum albedo is for grass -2 or 3 per cent. The data of experimental measurements of UVA and UVB radiation in the shadow show that maximum reduction of intensity of UVA radiation up to 80%, was at 1 p.m. in comparison with reduction of intensity of UVB radiation to 70% at 2 p.m.

Basal and squamous cell carcinoma risks for golfers: An assessment of the influence of tee time for latitudes in the Northern and Southern hemispheres

“…Air and particulate densities were left at their default values (34,35,36,37). Surface albedo was set at 0.02 in order to represent the UV albedo of a grass surface (40). …”

Assessment of Ultraviolet (Uv) Radiation From Technical Sources/Dirbtinių Šaltinių Skleidžiamos Uva Ir Uvb Spinduliuotės Įvertinimas/Определение Уфа- И Уфб-Излучений От Техногенных Источников

“…The radiation of shorter waves, namely, from 280 up to 315 nm, is called UVB; it damages the main nucleus of human life -desoxyribonucleic acid (DNA). UVB radiation being hazardous to living beings occupies the smallest part of the spectrum, from 280 up to 315 nm (ES 2006/25/EC, Chadyšienė andGirgždys 2008). UVC radiation is completely absorbed in the stratosphere.…”

Reliability and long term durability of bifacial photovoltaic modules using transparent backsheet

“…35) Thus, the reliability in UV light reflected from the ground is important for the transparent backsheet in snowy areas since the albedo in the UV region is higher than that in other locations. 36) For the bifacial module installed at Hokuto, no output degradation has been observed during 3 years of operation. Furthermore, no defects such as cracks and color changes in the transparent backsheet have been observed as shown in Fig.…”