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vol. 10, nr. 3 (2007)
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The occurrence of tiring weather conditions in north-eastern Poland during 1991-2000
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Ewa Dragańska, Iwona Cymes
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Department of Meteorology and Climatology, Warmia and Mazury University, Pl. Łódzki 1, 10-720 Olsztyn |
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vol. 10 (2007), nr. 3,
pp. 543-552
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abstract:
The paper presents determinations of the number of heavy-weather days. Data concerning the meteorological conditions from 1991-2000, related to air pressure, humidity, wind speed and cloudiness were used. The data came from 8 meteorological stations located in north-eastern Poland. Days were classified as heavy-weather days when there appeared at least one of the following meteorological conditions: air pressure changes up or down by about 8 hPa from one day to the next, e 18,8 hPa as a sultry day, day with strong wind when v 8 m s-1 or total cloudiness. Most frequently the weather in the region was “heavy” due to air pressure changes (67.7% ), then due to cloudiness (15.2%), sultriness (15.3%), and finally to wind velocity (1.7%). During the described period, the lowest number of heavy-weather days was noted in Elbląg – about 115 days per year, and the highest number in Lidzbark Warmiński – about 136 days per year.
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keywords:
heavy-weather days, bioclimate, North-Eastern Poland
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original in:
Polish
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