Physics – Medical Physics
Scientific paper
Jan 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004adspr..34.2215p&link_type=abstract
Advances in Space Research, Volume 34, Issue 10, p. 2215-2220.
Physics
Medical Physics
1
Uv Solar Risk In Argentina, High-Resolution Maps, Toms Ozone Climatology
Scientific paper
The connection between ultraviolet (UV) radiation and various skin diseases is well known. In this work, we present the computer program “UVARG”, developed in order to prevent the risk of getting sunburn for persons exposed to solar UV radiation in Argentina, a country that extends from low (tropical) to high southern hemisphere latitudes. The software calculates the so-called “erythemal irradiance”, i.e., the spectral irradiance weighted by the McKinlay and Diffey action spectrum for erythema and integrated in wavelength. The erythemal irradiance depends mainly on the following geophysical parameters: solar elevation, total ozone column, surface altitude, surface albedo, total aerosol optical depth and Sun-Earth distance. Minor corrections are due to the variability in the vertical ozone, aerosol, pressure, humidity and temperature profiles and the extraterrestrial spectral solar UV irradiance. Key parameter in the software is a total ozone column climatology incorporating monthly averages, standard deviations and tendencies for the particular geographical situation of Argentina that was obtained from TOMS/NASA satellite data from 1978 to 2000. Different skin types are considered in order to determine the sunburn risk at any time of the day and any day of the year, with and without sunscreen protection. We prescrit examples of the software for three diffèrent regions: the high altitude tropical Puna of Atacama desert in the North-West, Tierra del Fuego in the South when the ozone hole event overpasses and low summer-time ozone conditions over Buenos Aires, the largest populated city in the country. In particular, we analyzed the maximum time for persons having diffèrent skin types during representative days of the year (southern hemisphere equinoxes and solstices). This work was made possible by the collaboration between the Argentine Skin Cancer Foundation, the Institute of Physics Rosario (CONICET-National University of Rosario, Argentina) and the Institute of Medical Physics, University of Innsbruck, Austria. With the teamwork of physicians and physicists, a scientifically reliable and easy-to-handle tool was developed to predict the risk of solar exposure in Argentina. It cari be used by dermatologists as well as health authorities and educators in order to prevent health problems induced by solar UV radiation.
Cede Alexander
Luccini Eduardo
Piacentini Rubén D.
Stengel Fernando
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