|
|
vol. 15, nr. 2 (2010)
|
Variability in the number of hot, sweltering days and thermal perception at the polish Baltic coast
|
|
|
Czesław Koźmiński1, Bożena Michalska2
|
|
| (get PDF )
|
|
|
1 Department of Tourism, Szczecin University ul. Wąska 13, 71-415 Szczecin |
|
|
2 Department of Meteorology and Climatology, West Pomeranian University of Technology ul. Papieża Pawła VI/3, 71-434 Szczecin |
|
|
vol. 15 (2010), nr. 2,
pp. 347-357
|
|
|
abstract:
The frequency of daily maximum temperatures of 25.1-30.0oC (hot days), and higher than 30.0oC (very hot days) in April-September, was recorded at six meteorological stations (Świnoujście, Kołobrzeg, Koszalin, Ustka, Łeba, Hel) in 1986-2007. In addition, temperature intensity and multi-year trends of changes at the Polish coast were determined. Human thermal perception on hot and very hot days is a factor important for climate assessment from the tourism and recreation standpoint. The analysis was based on the subjective temperature index (STI) combining air temperature and humidity, solar radiation, and wind speed. The 22-year period analysed showed a positive significant (except Hel) trend in the number of hot days – from 3 to 5 days per 10 years. The highest maximum temperatures on the coast during the studied multiannual period reached 38oC, and the number of days with temperature above 35oC varied, depending on the station, from 1 to 4. Recreational inconvenience on the coast depends mainly on very hot days and, when the sunshine is intensive, it also depends on hot days which did not exceed 10% of total number of days (except for Koszalin). From April to September, on days assumed to be hot, the dominant perception was discomfort (hot and very hot), the perceptions identified as comfortable and warm were recorded at a frequency of from a few to several per cent.
|
|
keywords:
hot, sweltering days, maximum air temperature, thermal perception, Baltic coast
|
|
original in:
Polish
|
|
|
|
|
|
