This paper concerns the characteristics of the multi-annual, seasonal and daily variability of thermal inversion in the Tatra Mountains in 1995–2020. The analysis was performed on the basis of hourly measurements taken at the Institute of Meteorology and Water Management National Research Institute (IMGW-PIB) station in Kasprowy Wierch and Zakopane. The types of atmosphere circulation were determined found when the inversion was most frequent. The concentration of PM10 during the inversion and its intensity were analyzed and indicated that the number of inversion cases was growing. The analysis confirmed that inversions were most frequent in the cold season in the evening hours during anticyclonic circulation. Strong inversions occurred in the cold season. Winter inversions were associated with an increase in PM10 concentration.
The work presents the occurrence of snow cover in the western part of the Western Beskids in the years 1991–2020. We have analysed data from climate research stations of the IMGW-PIB located in Brenna, Laliki, Zawoja, Radziechowy (1991–2007)/Nowy Dwór (2008–2020). We calculated the number of days with snow cover for each winter seasons, the number of days with permanent snow cover, the potential duration of snow cover and the sum of seasonal snow cover thicknesses. The snowiness classes of Chrzanowski winters and the snowiness index of Paczos were determined from the sums of the thickness of the snow cover. The snowiest season was the 2005/06 winter season, while the thinnest snow cover was observed in the 2013/14 season. There are clear relationships between the height above sea level and the time of snow cover occurrence, as well as its thickness.
The article presents the weather conditions on Mount Szrenica, located in the Karkonosze range in the Sudetes, in 2018–2020. The data come from the Database of Integrated Monitoring of Natural Environment. An average temperature in the presented time was 4,0oC, an average yearly precipitation was 1245.8 mm, an average atmospheric pressure 865.3 hPa, average wind speed 5.1 m/s, average snow cover height 66.3 cm, the sun shone for 1881 hours in a year. Changes in individual values compared to the results published earlier prove the impact of global changes also in this area.
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