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Zmienność temperatury powietrza w północnej Polsce

Banaszkiewicz B., Panfil M.

Przegląd Naukowy Inżynieria i Kształtowanie Środowiska

2003

Vol. 12, No. 1

91--97

The paper presents analysis results of variability of air temperature in northem Poland. The comparison monthly mean values of air temperature of the 1951-1990 period with adequate values of 1881-1930 and 1931-1960 revealed that values of the 1951-1990 years are higher on the all investigated area in June and also generally in period from October to December (Figure 1). Monthly mean air temperature in the years of 1951-1990 revealed often inereasing tendency in winter months, March and May; how ever descending trend of air temperature occurred generally from June to September (Figure 2). The observed changes of mean values of monthly air temperature in Koszalin are in prevailing cases representative for all area of northem Poland. The spectral (Fourier) analysis of mean annual air temperature in Koszalin of the period 1851-1990 was done also. The data were filtered (it was used the 4235H filter), the linear trend and means values were removed from the series before the analysis. The periodogram values was computed using Hamming window (5). Four dominant cycles found in Fourier analysis were used to predict the temperature for the 1851-2030 period (Figure 4).