Table 2.

Climatic and bioclimatic indicators correlated with the answers from the sociological survey

Sociological survey questions	Climatic and bioclimatic indicators
Opinion on duration of summer and winter periods	∙ Number of days per year with average air temperatures above + 10  °C ∙ Number of days per year with average air temperatures below 0 °C
Local residents’ opinions on whether the season has become warmer or colder (summer, winter, autumn and spring)	∙ The average temperature of the days in the year with an average daily temperature of > 10 °C ∙ Average temperature of days per year with an average daily temperature of < 0 °C ∙ Average temperature in April and May ∙ Average air temperature for September and October
Opinion on the frequency of extreme weather events
Number of unusually hot days in summer	∙ Number of days per year with a maximum temperature above + 35 °C
Number of unusually frosty days in winter	∙ Number of days per year with minimum air temperature below − 40 °C
Number of unusually warm days in winter	∙ Average number of days with temperatures above 0 °C in winter period
Opinion on changes in the amount of precipitation in summer	∙ Amount of precipitation for June–August ∙ Precipitation amount for the period with temperatures < 0 °C
Opinion on changes in the amount of snow observed as depth	∙ Snow cover depth (m)
Opinion on the frequency of sudden air temperature fluctuations	∙ Number of days per year with a difference of consecutive average daily temperature > 8 °C ∙ Daily air temperature amplitude (°C)
Opinion on wind speed variation through past decades	∙ Wind speed (m/s)