Kuchcik Magdalena

Articles

UTCI applications in practice (methodological questions)

Krzysztof Błażejczyk, Kuchcik Magdalena

Geographia Polonica (2021) vol. 94, iss. 2, pp. 153-165 | Full text
doi: https://doi.org/10.7163/GPol.0198

Further information

Abstract:

UTCI, although it was developed with the participation of scientists from 22 countries, it has shortcomings and people using it face various obstacles. The difficulties include wide range of issues: from different availability of meteorological data in individual countries, through the kind of air temperature which should be properly used in calculations, or the need of recalculation of wind speed. However the biggest subject concern algorithms for mean radiant temperature (Mrt) calculations, different models and programs which simplify calculations of this complex index though introduce different approximations and, as a result, many false results. The paper presents also wide range of UTCI applications in urban bioclimate studies and bioclimatic mapping, climate-human health researches and biometeorological forecasts which were the primary purpose of the index creation, but also applications in tourism and recreation or even in bioclimate change analysis.

Keywords: problems with UTCI in use, data bases, mean radiant temperature, mapping, human health

Krzysztof Błażejczyk [k.blaz@twarda.pan.pl], Institute of Geography and Spatial Organization Polish Academy of Sciences Twarda 51/55, 00-818 Warsaw: Poland
Kuchcik Magdalena [mkuchcik@twarda.pan.pl], Institute of Geography and Spatial Organization Polish Academy of Sciences, 00-818 Warsaw, Twarda 51/55, Poland

The stimuli of thermal environment defined according to UTCI in Poland

Kuchcik Magdalena, Krzysztof Błażejczyk, Agnieszka Halaś

Geographia Polonica (2021) vol. 94, iss. 2, pp. 183-200 | Full text
doi: https://doi.org/10.7163/GPol.0200

Further information

Abstract:

The assessment of thermal stress stimuli in Poland was based on the Universal Thermal Climate Index (UTCI). Daily values of UTCI at 24 stations selected to represent the whole area of Poland at 12:00 UTC were calculated over the period 1951-2018. Various UTCI characteristics, i.e., spatial averages of daily, monthly and annual values, daily spatial contrasts (i.e., the difference between daily highest and lowest UTCI values) were defined in each of 8 bioclimatic regions of Poland. Ten-year trends for UTCI and spatial contrast values were counted and their statistical significance was analysed. A statistically significant increase in UTCI values was found in all the regions of Poland. However, contrasts in thermal stress both for Poland as a whole and in most of the regions decreased significantly, especially in the north-east of Poland, the country’s coldest region. This indicatesa reduction in the stimuli of thermal environment in Poland and in most of the individual regions.

Keywords: thermal stress, climate change, long series data, regionalization, spatial contrasts, Universal Thermal Climate Index

Kuchcik Magdalena [mkuchcik@twarda.pan.pl], Institute of Geography and Spatial Organization Polish Academy of Sciences, 00-818 Warsaw, Twarda 51/55, Poland
Krzysztof Błażejczyk [k.blaz@twarda.pan.pl], Institute of Geography and Spatial Organization Polish Academy of Sciences Twarda 51/55, 00-818 Warsaw: Poland
Agnieszka Halaś [aj.halas@twarda.pan.pl], Past Landscape Dynamic Laboratory, Institute of Geography and Spatial Organization Polish Academy of Sciences Twarda 51/55, 00-818 Warsaw: Poland