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Aura
|
2003
|
nr 08
17-19
In 1963 the Forest Department was re-established in Kraków Higher Agricultural School (currently the Agricultural Academy). Academie authorities submitted to the ministry for transferring a forest district located in the mountains, to be used for research and experiments by researchers, and for field studies and training for students. The Krynica forest district was selected as a challenging and difficult area, thus useful for research and teaching. The article deals with the role of this research and didactic unit, its tasks, and impact on climatic and natural values of the spa.
The analysis of rainfall from the period of 1971-2000 recorded in the Beskid Sądecki Mountains, in the phytoclimatic research station in Kopciowa near Krynica (φ = 49º 27'N and λ = 20º 58'E, located at the altitude of 720 m) indicated a strong rising tendency of rainfall in winter, spring and autumn. It was reflected in a clearly positive trend of the annual rainfall totals, despite the falling tendency of rainfall in the summer. On average, the annual rainfall totals were 1000 mm. During this 30-year period, the monthly totals of the summer months were characterised by the strongest variability, while the winter months' variability was the weakest. The highest rainfall totals were usually recorded in June and the lowest in February. The mean annual rainfall total increased during the thirty years by 208 mm. An increase in the amount of rainfall during spring and winter and a decrease in the summer indicates that the pluvial climate of the area under research has acquired oceanic features.
The aim of this study is the analysis of multiannual changeability of air relative humidity in Forest Experimental Station in Krynica Zdrój. The data comes from measurements from 1971­2006, which were collected at the Phytoclimatic Research Station of the Department of Forest Climatology in Mochnaczka Wyzna (718 m a.s.l.) and meteorological station in Krynica Zdrój health resort (580 m a.s.l.) also Jaworzyna Krynicka summit (1113 m a.s.l.). The long-term mean annual air relative humidity was 84.9% with deviation of 2.4%. The highest long-term mean monthly sum of the air relative humidity falls to December (92.5%), and the lowest falls to May: 76.8%. The air relative humidity trend index has totaled -6.1% in multiannual 1971-2006. Five-year forecast has exerted negative trend of air relative humidity on Forest Experimental Station in Krynica Zdrój.
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