The world's longest homogenised series (1976-2023) of biologically effective solar radiation data (daily exposure and midday irradiance) is presented. The following biological effects on the skin were considered: reddening, production of vitamin D3 and healing of psoriasis. The data were obtained from regular UV monitoring in Belsk using different erythemal broadband radiometers. These were Robertson-Berger (1975-1992), Solar Light model 501 (1993-1994 with # 927, 1995-2013 with # 2011) and Kipp-Zonen UV-AE-T # 30616 from 5 August 2013 to the present. The data were homogenised by multiplying the raw measured data by the daily calibration coefficients, obtained by comparing the measured erythemal irradiances at noon with those calculated from the radiative transfer model (TUV, 2024) simulations for cloudless days. Vitaminal and antipsoriatic values were obtained using the data conversion method developed in IGF PAS (Czerwińska and Krzyścin, 2024) to estimate any biologically effective irradiance from the measured erythemal irradiance. The database contains the following daily values since 1 January 1976: raw and reevaluated daily erythemal radiant exposure and midday irradiance, calibration coefficients, erythema-vitamin D3 and erythema-antipsoriasis conversion coefficients (for daily radiant exposures and midday irradiance), vitaminal and antipsoriatic radiant exposure and midday irradiance, radiant exposure and midday irradiance in cloudless days by TUV model for all biological effects considered. In addition, the daily values of variables to be used in UV reconstructions by statistical methods (i.e. the so-called regressors of the model) are also included in the database. These are total column ozone, aerosol optical depth, global solar irradiance, sunshine duration, relative sunshine duration (as a percentage of the length of the day) and the clearness index.
References:
Czerwińska, A., and Krzyścin, J.: Measurements of biologically effective solar radiation using erythemal weighted broadband meters. Photochem. Photobiol. Sci., 23, 479–492, https://doi.org/10.1007/s43630-023-00532-z, 2024.
Tropospheric Ultraviolet and Visible (TUV) Radiation Mode (2024). Available on line: https://www2.acom.ucar.edu/modeling/tropospheric-ultraviolet-and-visible-tuv-radiation-model, last access 11 December 2024.