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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 relative humidity in timber forest and open area at Kopciowa, near Krynica Zdrój in Beskid Sądecki Mountains. The data comes from psychrometric measurements from 1971-1982, which were collected at the Phytoclimatic Research Station of the Department of Forest Climatology. The lowest values of relative humidity were spring, on average 80% on open area and 85% in timber forest. The highest values were autumn, properly 91% on open area and 94% under forest canopy. In all time periods fluctuations of relative humidity they were small in forest. In individual seasons of year and in vegetation period also, the relative humidity was greatest in forest. The biggest differences, on benefit of forest stand, were in spring months (April, May), the smallest differences were in November and December, and they were on average 4%. The differences of relative humidity for decade periods were between 8 and 15%, in pentad periods from 15 to 30% and in individual days they achieved 50% even.
This study concerns the observations and measurements of snow-cover carried out during the period from 1970 to 1997 in the open area and in the fir-spruce forest at the Station of Phytoclimatic Research at Kopciowa in the Beskid Sądecki Mountains. It was found that the average duration of a stable and compact snow-cover is 118 days in the open area and 126 days in the forest. On the average snow appears on 13 November in the open area, and 7 days later in the forest. It disappears on 23 March from the open area, and nearly 3 weeks later from the forest. In the first half of the winter season the average depth of snow-cover in the forest is only a little smaller than in the open area, and it is characterized by a slightly greater variation. While from mid-February the snow-cover in the open area is thinner, and is much more variable than in the forest.
The analysis of the meteorological vegetation season from the period of 1971-2000 was recorded in the Beskid Sądecki Mountains, in the phytoclimatic research station at Kopciowa near Krynica. The station is located at the altitude of 720 m. Its geographical coordinates are φ = 49º27 N and λ = 20°58' E. This paper jointly presents the length of the vegetation season and dates of its beginning and end. In the years 1971-2000 the meteorological vegetation season began on average on 14 April and finished on 19 October. Its duration was 189 days. The shortest vegetation season was noted in 1997 and lasted 160 days. The longest one occurred in 1989 for 211 days. The duration and dates of the beginning and ending are characterised by a large annual changeability. Almost 25% of annual indicators differed from one another by two weeks. The earliest date of the beginning of the vegetation season fell on March 28, 1989; the latest was on May 1, 1980. The latest end date of a meteorological vegetation season was November 16, 2000. The earliest end date was September 30, 1997. The average multi-annual air temperature of the vegetation season was 10,5°C. The warmest vegetation season in of the period of 1997-2000 occurred in 1983, with an average air temperature of 11.7°C.
The early and late frosts (type), ground and total (kind), at Kopciowa near Krynica are described. The variation of the beginning and end, duration, and the number of days with the light frosts of both types and kinds are analyzed. It was found that the number of the light ground and total frosts in the spring was twice as high as that in the autumn, although both seasons lasted for the same number of days. Besides, in both seasons the number of the light ground frosts was twice as high as that of the light total frosts. The light ground frosts also occurred during the summer season. No significant trend in changes of the indexes discussed was observed during 1971-2000. In 1980s there was a distinct increase of the number of days with the light ground frosts. During that period the light ground frosts began to occur earlier in the autumn and ended later in the spring. The number of days with a light frost, however, was not correlated with the length of the light frost period. It was impossible to foresee the beginning of the light total frosts on the basis of the date of the beginning of the light ground frosts. Also it was impossible to foresee the length of the light frost period in the spring on the basis of its length in the autumn, and vice versa. This also concerned the number of days with a light frost.
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