Milica Pecelj


The assessment of human bioclimate of Vranje health resort (Serbia) based on Universal Thermal Climate Index (UTCI) with the focus on extreme biothermal conditions

Milica Pecelj, Anna Błażejczyk, Nemanja Vagić, Peca Ivanović

Geographia Polonica (2021) vol. 94, iss. 2, pp. 201-222 | Full text

Further information


The study deals with an assessment and interpretation of the bioclimatic conditions in Vranje (southern Serbia).The study aims at temporal distributions of bioclimatic conditions focussing on extreme thermal stress based on the Universal Thermal Climate Index (UTCI). The meteorological data required for the calculation of UTCI concern hourly (7 and 14 CET) weather data collected for the period 2000-2017. The frequency of very strong heat stress (VSHS), very strong cold stress (VSCS) and extreme cold stress (ECS) for both morning and midday hours. Furthermore, the daily difference of the UTCI hourly values (diurnal UTCI change) are specified, giving the daily variance of heat and cold stress. The results revealed the frequency of days in which thermal stress prevails for the studied period. The obtained results show an increase in extreme heat biothermal conditions,while extreme cold biothermal conditions are in decline, especially in the last 10 years. However, the frequency (the number of days) of very strong heat stress (VSHS) increased since 2007. A spectacular increase in heat stress was observed in the month of September, particularly in 2015.

Keywords: biothermal conditions, UTCI, very strong heat stress, very strong cold stress, Vranje

Milica Pecelj [], Geographical Institute Serbian Academy of Science and Arts Djure Jakšića 9, 11000 Belgrade: Serbia; Faculty of Philosophy University of East Sarajevo Alekse Šantića 1, 71420, Pale, RS: Bosnia and Herzegovina
Anna Błażejczyk [], Laboratory of Bioclimatology and Environmental Ergonomics Bioklimatologia Łukowska 17/55, 04-133 Warszawa, Poland
Nemanja Vagić [], Faculty of Geography University of Belgrade Studentski trg 3, 11000, Belgrade: Serbia
Peca Ivanović [], School of Electrical Engineering University of Belgrade Bulevar kralja Aleksandra 73, 11120, Belgrade: Serbia

Thermal stress in selected mountain system in Central and Eastern Europe – initial research based on UTCI characteristics

Krzysztof Błażejczyk, Milica Pecelj, Pavol Nejedlik, Olesya Skrynyk, Katarina Mikulova

Geographia Polonica (2021) vol. 94, iss. 2, pp. 223-236 | Full text

Further information


Mountain areas create specific features of local climates (by modification of air circulation, insolation, air temperature, precipitation, wind regime) and greatly affect ambient weather conditions which influence different kinds of human (climbing, skiing, walking, etc.). However, till now only few studies of human bioclimate in individual mountain ridges in Europe were done. The aim of the present study is to assess thermal stress features represented by Universal Thermal Climate Index (UTCI) in nine mountain systems in Central and Eastern Europe. 37 meteorological stations located at altitudes of 237-3580 m above sea level were considered.The data represent midday observational term and cover the period 2000-2017. Mean, highest and lowest annual thermal stress values and annual frequency of cold and heat stress days are analysed The conducted studies have demonstrated that in the examined mountain systems thermal stress conditions are dependent (though to a various extent) mostly on altitude (UTCI values and heat stress days decrease and number of cold stress days rise significantly due to increase of altitude). However, impacts of latitude and longitude is well seen only in altitude belt of 300-1000 m a.s.l.

Keywords: human bioclimate, UTCI, mountain tourism potential, Central Europe, Eastern Europe

Krzysztof Błażejczyk [], Institute of Geography and Spatial Organization Polish Academy of Sciences, Twarda 51/55, 00‑818 Warszawa, Poland
Milica Pecelj [], Geographical Institute Serbian Academy of Science and Arts Djure Jakšića 9, 11000 Belgrade: Serbia; Faculty of Philosophy University of East Sarajevo Alekse Šantića 1, 71420, Pale, RS: Bosnia and Herzegovina
Pavol Nejedlik [], Earth Science Institute Slovak Academy of Science Dubravska cesta 9, 84005 Bratislava: Slovakia
Olesya Skrynyk [], National University of Life and Environmental Sciences of Ukraine Heroyiv Oborony, 15 Kyiv: Ukraine; Ukrainian Hydrometeorological Institute, Nauky 37 Kyiv: Ukraine
Katarina Mikulova [], Slovak Hydrometeorological Institute Jeseniova 15, 833 15 Bratislava: Slovakia