Institute of Meteorology and Climatology, Leibniz University of Hannover, Hannover, Germany.
Photochem Photobiol. 2012 Jan-Feb;88(1):215-22. doi: 10.1111/j.1751-1097.2011.01018.x. Epub 2011 Nov 17.
Doses of erythemally weighted irradiances derived from polysulphone (PS) and electronic ultraviolet (EUV) dosimeters have been compared with measurements obtained using a reference spectroradiometer. PS dosimeters showed mean absolute deviations of 26% with a maximum deviation of 44%, the calibrated EUV dosimeters showed mean absolute deviations of 15% (maximum 33%) around noon during several test days in the northern hemisphere autumn. In the case of EUV dosimeters, measurements with various cut-off filters showed that part of the deviation from the CIE erythema action spectrum was due to a small, but significant sensitivity to visible radiation that varies between devices and which may be avoided by careful preselection. Usually the method of calibrating UV sensors by direct comparison to a reference instrument leads to reliable results. However, in some circumstances the quality of measurements made with simple sensors may be over-estimated. In the extreme case, a simple pyranometer can be used as a UV instrument, providing acceptable results for cloudless skies, but very poor results under cloudy conditions. It is concluded that while UV dosimeters are useful for their design purpose, namely to estimate personal UV exposures, they should not be regarded as an inexpensive replacement for meteorological grade instruments.
已将从聚砜（PS）和电子紫外线（EUV）剂量计得出的红斑加权辐照度剂量与使用参考分光辐射计获得的测量值进行了比较。PS 剂量计的平均绝对偏差为 26%，最大偏差为 44%，在北半球秋季的几个测试日中午，校准后的 EUV 剂量计的平均绝对偏差为 15%（最大 33%）。在 EUV 剂量计的情况下，使用各种截止滤光片的测量表明，与 CIE 红斑作用光谱的偏差部分是由于对可见光辐射的小但显著的灵敏度，这种灵敏度在设备之间有所不同，并且可以通过仔细预选来避免。通常，通过直接与参考仪器进行比较来校准 UV 传感器的方法会产生可靠的结果。然而，在某些情况下，使用简单传感器进行的测量的质量可能被高估。在极端情况下，简单的日射强度计可用作 UV 仪器，在无云的天空下提供可接受的结果，但在多云条件下则结果非常差。结论是，虽然 UV 剂量计对于其设计目的（即估计个人 UV 暴露量）很有用，但不应将其视为气象级仪器的廉价替代品。
