The Dynamics of the Bioclimatic Indices of Environmental Comfort in the Udmurt Republic, Russia

Yu.P. Perevedentsev^*, A.V. Shumikhina^**

Kazan Federal University, Kazan, 420008 Russia

E-mail: ^*ypereved@kpfu.ru, ^**kamb2442@gmail.com

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Abstract

This paper provides a review of the biometeorological indices used to assess the degree of comfort of weather and climate conditions. Statistical calculations of the effective and equivalent effective temperature have been performed for eight weather stations in the Udmurt Republic (Russia) during the period of 1961–2014. The effect of varying weather conditions on the functional state of the human body has been revealed based on the indices of weather hardness and pathogenicity. It has been found that the weather conditions in the region of study are comfortable only in the summer period. In the winter period, they are either irritating or acute. Positive values of the coefficients of linear trend inclination prevail for most biometeorological indices, thereby showing that the weather conditions improved over the last decades. Sample calculations of the biometeorological indices have been given for the extreme weather situations.

Keywords: bioclimate, biometeorological indices, comfortable conditions, pathogenicity index, Udmurt Republic

Acknowledgments. The study was supported in part by the Russian Foundation for Basic Research (project no. 15-05-06349).

Figure Captions

Fig. 1. Changes in the average equivalent effective temperatures (EET) of January (a) and July (c) in Izhevsk (1961–2014), the linear trends of EET for January (b) and July (d) (1980–2014).

Fig. 2. Changes of the Bodman index for July in Izhevsk during the following periods: a) 1961–2014 and b) 1980–2014.

Fig. 3. Distribution of the number of days in the year by the pathogenicity index gradations in the Udmurt Republic.

Fig. 4. Annual changes in the average values of the pathogenicity index in the Udmurt Republic.

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For citation: Perevedentsev Yu.P., Shumikhina A.V. The dynamics of the bioclimatic indices of environmental comfort in the Udmurt Republic, Russia. Uchenye Zapiski Kazanskogo Universiteta. Seriya Estestvennye Nauki, 2016, vol. 158, no. 4, pp. 531–547. (In Russian)

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