RESEARCH PAPER
Variability of thermal and precipitation conditions in the area north-eastern Lublin region in the aspect of atmospheric drought risk in the period from 1971 TO 2020
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1
Department of Ecology, Climatology and Air Protection, Faculty of Environmental Engineering and Land Surveying,
University of Agriculture in Krakow, 24/28 Mickiewicza Ave, 30-059 Krakow, Poland
2
Department of Agriculture, John Paul II University in Biała Podlaska, 95/97 Sidorska St. 21-500 Biała Podlaska, Poland
3
AgroBioTech Research Centre, Tr. Slovak University of Agriculture in Nitra, A. Hlinku 2, 949 76 Nitra, Slovak Republic
Submission date: 2023-09-11
Acceptance date: 2023-10-26
Publication date: 2023-12-19
Corresponding author
Alicja Baranowska
Department of Agriculture, John Paul II University in Biala Podlaska, 95/97 Sidorska St. 21-500 Biała Podlaska, Poland
Acta Sci. Pol. Formatio Circumiectus 2023;22(4):5-21
HIGHLIGHTS
- On the basis of the calculated characteristics of air temperature and precipitation in the years 1971–2020, an increase in average air temperature was found. On the basis of the calculated values of the A dryness index and its trends, an increase in the risk of atmospheric drought in the north-eastern Lublin region was found, and the intensification of this phenomenon occurred in the last two decades.
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ABSTRACT
Aim of the study:
The purpose of this research was to assess the variability of thermal and precipitation conditions, as well as the risk of atmospheric drought in the north-eastern Lublin region in the period from 1971 to 2020.
Material and methods:
The study used data of air temperature and monthly precipitation totals from three stations. Basic statistical characteristics of thermal-precipitation conditions were calculated, including: mean values of monthly air temperature and precipitation totals, standard deviations of air temperature (σt), and coefficients of variation of precipitation (cv) in the period 1971–2020. Atmospheric drought risk was assessed on the basis of the calculated values of thermal-precipitation index A.
Results and conclusions:
A statistically significant increase in the average air temperature was determined, following from the calculated basic characteristics of air temperature and precipitation, which on average amounted from 0.4 to 0.6°C over the period of 10 years during summer months, autumn months, and in April. Statistically significant increase in precipitation totals was observed in the cold half-year: a stronger trend in January, and a weaker growing trend in February and March. An increase in the risk of atmospheric drought in the north-eastern Lublin region was found based on the calculated thermal-precipitation aridity index A, while intensification of this phenomenon occurred in the last two decades, particularly during summer and slightly less so in autumn. It was indicated that the primary cause of drought risk in the studied area consisted of a significant increase in air temperature combined with the lack of tendency in the scope of change in atmospheric precipitation.