Thermal conditions relative to atmospheric circulation in the Christmas period in Poland

Abstract

The main objective of this article was to determine thermal conditions in the Christmas period and the impact of atmospheric circulation on their formation. The article is based on data on the mean daily air temperature for 16 stations in Poland for the 1966–2014 multiannual period. In this period, no statistically signifcant changes of air tem- perature were observed, neither in December, nor the Christmas period. The occurrence of averagely warmer holidays was associated with the infow of maritime polar air masses from the western sector, while colder holidays occurred with the infow of continental polar air masses from the eastern sector.