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1 2009

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Odczuwalność cieplna w sezonach letnich 2007 i 2008 w Calypsobyen (Spitsbergen)

Gluza A., Siwek K.

Problemy Klimatologii Polarnej

2009

nr 19

223-231

Celem pracy jest wstępna charakterystyka warunków bioklimatycznych południowego obrzeża Bellsundu. W tym celu wykorzystano powszechnie dostępne charakterystyki bioklimatyczne: wielkość ochładzającą powietrza (H), wskaźnik ochładzania wiatrem (WCI) oraz temperaturę ochładzania wiatrem (WCT). Obliczono ich wartości średnie, maksymalne i minimalne oraz rozkład częstości.

This paper describes the bioclimate of Calypsobyen. The station was located on Calypsostranda, a flat sea terrace, at the height of about 23 m a.s.l., at a distance of 200 m from Bellsund Fjord and 2 km from the Scott Glacier. The substratum was made of dry lichen-moss tundra. For this analysis there have been chosen two meteorological elements: air temperature and wind. The material used in this paper was taken from summer seasons from the years 2007 and 2008. We used meteorological data from the 10th of June to 11th of September from each year – together 188 days. Three bio-meteorological indices were analyzed: Dry Cooling Power (H), Wind Chill Index (WCI) and Wind Chill Temperature (WCT). Results of these observations are presented in tables. Mean cooling power in summer seasons amounted 1285.3 Wźm-2. Frequency of occurance of cooling power was counted according to Petrovič and S. Kacvinsky classification. In the investigated period predominated “cold” and “cool” cases. There were about 64.3% such cases. From among analysed meteorological elements influent cooling power, the wind velocity has the most importance. Correlation coefficient between the wind velocity and cooling power amounts +0.96. Mean Wind Chill Index (WCI) in summer seasons amounted 823.2 Wźm-2. In the investigated period also predominated “cool” and “cold” cases. There were about 93.2% such cases. From among analysed meteorological elements influent Wind Chill Index, the wind velocity has also the most importance. Correlation coefficient between the wind velocity and Wind Chill Index amounts +0.88. Mean Wind Chill Temperature (WCT) in summer seasons amounted 3.3°C. In the investigated period predominated only “very small” and “small” cases. There were 100% such cases. From among analysed meteorological elements influent cooling power, the air temperature has also the most importance. Correlation coefficient between the temperature and Wind Chill Temperature amounts +0.73.