The presented meteorological parameters obtained between 1987 (1986) and 2008 from the meteorological station in Zielonka included: annual, half-year and monthly precipitation sums, snow cover characteristic, drought frequencies and number of days by quantity. The study results indicated the occurrence of changes in the values of the above-specified parameters. From 1987 to 2008 the mean measured precipitation value was 531 mm. In Zielonka nearly five droughts in a year and two-three during the summer half-years were noted. In recent years, a decrease in days with precipitation below 1 mm has been recorded. No indication of the trend decline in the number of days with snow cover or the maximum thickness, but the annual average thickness of snow cover showed minimal downward trend. Among the analysed characteristics of the linear trend, statistically significant (p < 0.05) was found only for the number of days with precipitation, precipitation in June, the number of days with precipitation < 1.00 mm.
Full text available in Polish in Adobe Acrobat format:https://www.npt.up-poznan.net/pub/art_5_119.pdf
| MLA | Grajewski, Sylwester. "Warunki pluwialne w Puszczy Zielonka w latach 1987-2008 ." Nauka Przyr. Technol. 5.6 (2011): #119. |
| APA | Sylwester Grajewski (2011). Warunki pluwialne w Puszczy Zielonka w latach 1987-2008 . Nauka Przyr. Technol. 5 (6), #119 |
| ISO 690 | GRAJEWSKI, Sylwester. Warunki pluwialne w Puszczy Zielonka w latach 1987-2008 . Nauka Przyr. Technol., 2011, 5.6: #119. |
Sylwester Grajewski
Katedra Inżynierii Leśnej
Uniwersytet Przyrodniczy w Poznaniu
ul. Mazowiecka 41
60-623 Poznań
Poland
e-mail: sylgraj@up.poznan.pl