Direct comparison between the angular distributions of the erythemal and eye-damaging UV irradiances: A pilot study
Direct comparison between the angular distributions of the erythemal and eye-damaging UV irradiances: A pilot study
复制标题
DOI：
10.1016/j.jphotobiol.2010.11.001
复制
发表时间：
2011-02-07
影响因子：
5.4
通讯作者：
Parisi, A. V.
中科院分区：
文献类型：
--
作者：
Schouten, P.;Parisi, A. V.
几个宽带紫外（UV）辐射角分布的调查已经提出。由于已知紫外线辐射的生物破坏效果与波长有关，因此有必要将这项研究扩展到光谱紫外线的分布。紫外线辐射也容易受到瑞利和米氏散射过程，这两个都是完全依赖于波长。此外，大多数以前的测量详细说明了光谱紫外线辐射的生物破坏作用，已定向相对于水平面或在一个平面上指向太阳（阳光正常），与辐照度加权对行动光谱制定专门为人类皮肤和组织。然而，人体由非常少的水平或阳光正常的表面组成。通过测量整个天空的光谱辐照度分布的完整的陆地太阳紫外波段和加权它对太阳能，photoconjunctivital和photokeratital行动光谱允许生物有效辐照度（UV（BE））值之间的差异进行分析，在不同的方向和散射过程后，这些UV（BE）分布的均匀性的影响。结果表明，在当地大气环境下，每种生物响应的UV（BE）分布剖面是各向异性的，最高强度通常在位于水平面和垂直平面之间的倾斜角处截取，沿着方向与太阳法线紧密重合。由此发现，由于大气中较短和较长的紫外波长之间的差异散射，太阳紫外线（BE）和光合紫外线（BE）的角分布是不同的。(C)2010年爱思唯尔。All rights reserved.
Several broadband ultraviolet (UV) radiation angular distribution investigations have been previously presented. As the biologically damaging effectiveness of UV radiation is known to be wavelength dependent, it is necessary to expand this research into the distribution of the spectral UV. UV radiation is also susceptible to Rayleigh and Mie scattering processes, both of which are completely wavelength dependent. Additionally, the majority of previous measurements detailing the biologically damaging effect of spectral UV radiation have been oriented with respect to the horizontal plane or in a plane directed towards the sun (sun-normal), with the irradiance weighted against action spectra formulated specifically for human skin and tissue. However, the human body consists of very few horizontal or sun-normal surfaces. Extending the previous research by measuring the distribution of the spectral irradiance across the sky for the complete terrestrial solar UV waveband and weighting it against erythemal, photoconjunctivital and photokeratital action spectra allowed for the analysis of the differences between the biologically effective irradiance (UV(BE)) values intercepted at different orientations and the effect of scattering processes upon the homogeneity of these UV(BE) distributions. It was established that under the local atmospheric environment, the distribution profile of the UV(BE) for each biological response was anisotropic, with the highest intensities generally intercepted at inclination angles situated between the horizontal and vertical planes along orientations closely coinciding with the sun-normal. A finding from this was that the angular distributions of the erythemal UV(BE) and the photoconjunctivital UV(BE) were different, due to the differential scattering between the shorter and longer UV wavelengths within the atmosphere. (C) 2010 Elsevier By. All rights reserved.