A simple algorithm for simulating the solar ultraviolet radiation at the Earth's surface: An application in determining the minimum erythema dose

Abstract

The purpose of this study is to present a new simple model algorithm for simulating the solar ultaviolet radiation reaching the surface of the Earth. The algorithm is capable of providing both the direct and diffuse solar ultraviolet radiation, for different atmospheric conditions, time, and geographic locations. An application of the model relates to the calculation of the minimum energy input of ultraviolet radiation to be received by a human to allow an erythema development.

Investigation of the erythemal ultraviolet trends in the greater Greece area: Implications to human health

“…These measurements, made in different spectral areas (UV-B and broad-band UV), were correlated with the results obtained from an already proposed theoretical algorithm (Katsambas et al 1991). The comparison of the theoretical algorithm's results with the corresponding experimental data showed a very good agreement.…”

Observed association between air pollution and the biologically effective solar ultraviolet irradiance

“…The derived modelled UV-B values were compared with the measured ones of the Panepistimioupolis station, to yield a good agreement for days with low pollution levels, but significant discrepancies for days with high pollution levels (such as 25 June 2002 and 2 July 2002), especially at local noon (figure 3(a), (b)) (Katsambas et al 1991). In addition, using the corresponding EUVI data of Penteli, the differences in the EUVI modelled and measured values between the two stations (Penteli and Panepistimioupolis) were studied.…”

“…The effective power of the UV radiation was calculated by considering that: 1 [MED h 21 ]50.0583 W m 22 . For comparison purposes, two appropriate theoretical algorithms for the EUVI and UV-B estimation were also employed (Bird and Riordan 1986, Katsambas et al 1991, Varotsos 1994, based on TOZ measurements made at the Athens ozone station by the well-maintained ground-based Dobson spectrophotometer #118. That instrument uses a quartz double monochromator and has been used to monitor TOZ ever since its development.…”

Distribution of Ultraviolet solar Radiation at Riyadh Region, Saudi Arabia

“…On the other hand, the intensity of direct solar irradiance (Wh/m 2 ), is given by the following spectral equation as mentioned earlier by Katsambas et al (1991), or:…”

“…A simplified mathematical expression for UV data is developed based on earlier works by Katsambas et al (1991) and Al-Salhi et al (2001). The present work helped to understand the distribution of total UV radiation together with the environmental effects in Riyadh area.…”