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1 Problemy Klimatologii Polarnej

1 2003

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Przebieg warunków pogodowych w Calypsobyen w sezonie letnim 2001 na tle wielolecia 1986-2000

Gluza A., Siwek K., Pęcak J., Siłuch M.

Problemy Klimatologii Polarnej

2003

nr 13

117-125

Arctic, especially western coast of Spitsbergen has been a field of taking research by scientist from UMCS and AR in Lublin for more than 15 years. Researches have been taken there are connected with earth sciences like: meteorology and climatology, geomorphology, hydrography, geology and agriculture and botany. Meteorological observations were steady point of researches taking on every UMCS?s trips in Spitsbergen. At the beginning, at the 1986-1988 seasons were very wide, and measurements were taken every 3 hours. Between 1989 and 1999 measurements were taken 4 times a day a.e. every 6 hours. Since 1999 measurements have been doing by automatic stations. Appliance this equipment let us taking measurements with 10 minutes time step. The aim of this paper is to present course of meteorological conditions during the scientific trip to Spitsbergen in 2001 at the background of period 1986-2000. There were made comparisons of course mean daily four meteorological elements as: air temperature measured at 200 cm height [°C], wind speed [m/s], cloudiness, and precipitation [mm] from 2001 season with data collected during 15-years UMCS geographical trips on Spitsbergen. We can make statement that in thermic season 2001 was a bit cooler (0.1°C) than the period 1986-2000. At that season variability of mean daily temperatures was lower than in period. The lowest mean daily temperature was 2.5°C, and all days in period 2001 were lukewarm. The rate of mean daily cloudiness in period 1986-2000 is compensated. 2001 season was the same as other seasons during period. The air masses are strongly modified by circulation and orography. Season of 2001 was featured by lower mean daily wind speed (3.2 m/s) than in the period ? 4 m/s, also highest mean daily wind speed in 2001 was lower than in period 1986-2000. The greatest variability of four analysed elements on that period has precipitation. The variable of this element exceed 71.7 mm, which we can express as a ratio 1 to 20. 2001 season was dryer than mean of period about 11 mm.