Novel Method for Exposure Calculation
|Researcher:||Michael Schrempf, Anna Wieczorek, Kathrin Graw, Gunther Seckmeyer|
In this project, a new method for calculating the actual exposure of a human was developed by the IMUK.
For the calculation of the UV exposure, the incident solar spectral radiance is biologically weighted and integrated over all relevant parts of the human body. By the application of this novel method on a three-dimensional model of human, the complex geometry of the radiation field is taken into account, and therefore resulting in more realistic exposure estimations. Results show that the UV index is not a good indicator for the exposure which depends on the orientation of the body. At the winter solstice (December 21, noon, cloudy) at least in central Europe sufficient vitamin D3 cannot be obtained with realistic clothing, even if the exposure were extended to all daylight hours.