Zmienność parametrów termicznych w Arktyce Norweskiej w okresie 1951-1990

• Autorzy: Przybylak R.

Warianty tytułu

EN

Variability of thermic parameters in the norvegian Arctic over the period 1951-1990

• Języki publikacji: PL

Abstrakty

EN

In the paper, changes in mea n annual intraseasonal (within season) and interannual (between years) temperature variability have been analysed over the Norwegian Arctic for the period 1951 to 1990. The daily maximum (TMAX) r mean (TSR), minimum (TMIN) temperatures and the diurnal temperature range (AMP) for the Jan Mayen and Hopen stations were examined. The temperature variability parameters and the method of computations was the same as in Plummer (1996), except the computation method of the long-term daily mean values, which here were obtained by averaging daily data from the period 1951-1990. Plummer have received these series by performing a Fourier analysis of their monthly mea n and interpolating from their respective average annual cycles. In the Norwegian Arctic, similarly as for Australia (Plummer 1996), trends in intraseasonal temperature variability were mixed and in all cases not statistically significant (Figs 1-8). These results are in good agreement with the observed lack of warming in the studied area over the period 1951-1990 (Przybylak 1996, 1997). Most sensitive to high-frequency temperature variability, of the four thermic parameters, is TMAX. Plummer (1996) also found similar results for Australia. The range of changes in intraseasonal variability and their values decreases when the time-scale of averaging intervals increases. Small, not statistically significant, increases in interannual variability for all thermic parameters were observed in the studied area (Fig. g). The greatest interannual variability in both analysed stations shows TMIN and the lowest AMP. In Australia Plummer found TMAX as the most sensitive to this kind of variability.

Słowa kluczowe

PL

zmiany klimatu; zmienność temperatury; Arktyka Norweska

EN

temperature variability; climate changes; Norwegian Arctic

• Wydawca: Stowarzyszenie Klimatologów Polskich
• Czasopismo: Problemy Klimatologii Polarnej
• Rocznik: 1999
• Tom: nr 9
• Strony: 23--36
• Opis fizyczny: Bibliogr. 7 poz., rys.

Twórcy

autor

Przybylak R.

• Zakład Klimatologii, Instytut Geografii UMK w Toruniu

Bibliografia

• 1. Houghton J. T, Meila Filho L.G, Callander B. A, Harris N., Kattenberg A and Maskell K. (red.), 1996. Climate Change 1995. The Science of Climate Change, Cambridge University Press, ss. 572
• 2. Karl T. R, Knight R. W., Plummer N., 1995. Trends in high-frequency climate variability in the twentieth century, Nature, 377, 217-220.
• 3. Katz R W., Brown B. G, 1992. Extreme events in a changing climate: Variability is more important than averages, Climatic Change, 21, 289-302.
• 4. Parker D. E, Jones P D. Folland C. K, Bevan A, 1994. Interdecadal changes of surface temperature since the late nineteenth century, J. Geophys. Res, 99, s.14373-14399.
• 5. Plummer N., 1996. Temperature variability and extremes over Australia: part 1 – recent observed changes, Aust. Met. Mag., 45, 233-250.
• 6. Przybylak R, 1996. Zmienność temperatury powietrza i opadów atmosferycznych w okresie obserwacji instrumentalnych w Arktyce, Uniwersytet Mikołaja Kopernika, Rozprawy, ss. 280.
• 7. Przybylak R, 1997. Spatial and temporal changes in extreme air temperatures in the Arctic over the period 1951-1990, Int. J. Climatol , 17, 615-634.