Heterogeneity Accounting for the UV-C Radiation Propagation Path Over the Sea

• Published in: Russian journal of physical chemistry. B Vol. 17; no. 5; pp. 1246 - 1250
• Main Authors: Rodionov, A. I., Rodionov, I. D., Rodionova, I. P., Shestakov, D. V., Egorov, V. V., Shapovalov, V. L., Kalinin, A. P.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.10.2023; Springer Nature B.V
• Subjects: Aerosols; Chemical Physics of Atmospheric Phenomena; Chemistry; Chemistry and Materials Science; Heterogeneity; Inhomogeneity; Optical thickness; Ozonosphere; Physical Chemistry; Propagation; Radiation; Radio range; Troposphere; Water drops; extinction; UV-C receiver; optical thickness; altitude above sea level; UV-C radiation
• ISSN: 1990-7931; 1990-7923
• DOI: 10.1134/S1990793123050275

The ultraviolet (UV)-C range ensures high noise immunity and the possibility of operating equipment in the troposphere during the daytime, since the ozone layer of the atmosphere almost completely absorbs the UV-C radiation from the Sun. One of the main advantages of this range in comparison with the visible, infrared, and even radio range is the weak scattering of ultraviolet on aerosol particles of dust, snow, hail, water droplets, fog, and rain. In this paper, we propose a method for determining the optical thickness of the atmosphere during the propagation of UV-C radiation along an inclined path over the sea. Accounting for the inhomogeneity of the path of propagation of UV-C radiation is ensured by introducing in the model the dependence of the extinction coefficient and the optical thickness of the atmosphere on altitude. The validity of the proposed model is confirmed by the data of a full-scale experiment conducted over the Black Sea. The extinction coefficient of the atmosphere above the sea surface, as well as its aerosol and molecular components, is determined based on the experimental data.