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vol. 12, nr. 2 (2008)
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Thermal periods in south-eastern part of Poland (1971-2000)
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Barbara Skowera, Bogumiła Kopeć
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Department of Meteorology and Climatology, Agricultural University, Al. Mickiewicza 24/28, 30-059 Kraków |
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vol. 12 (2008), nr. 2,
pp. 517-526
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abstract:
The paper presents thermal conditions in south-eastern Poland in the period between 1971-2000 (without mountain area). The duration of the thermal seasons was determined in relation to the day when the air temperature exceeds the following thermal thresholds: winter (t ≤ 0ºC), farming (agricultural) period (t ≥ 2.5ºC), growing season (t ≥ 5ºC), period of intensive development of vegetation (t ≥ 10ºC), and summer - period of ripening (t ≥ 15ºC). It was noticed that the dates of beginning, ending and duration of those thermal seasons had changed in comparison with dates from earlier multiyear periods. Average dates of beginning of winter and growing seasons are different. Winter begins and ends earlier. It was also noticed that the period of intensive development of vegetation and period of ripening had become longer. These conditions could be positive aspects of climate changing. They can bring new possibilities for plants which need higher temperatures and sunshine than traditional plants cultivated in climatic conditions of south-eastern Poland.
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keywords:
thermal periods, south-eastern Poland
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original in:
Polish
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