Geographia Polonica (2000) vol. 73, iss. 2
20th-century variability to daily maxima and minima of air temperature in the Sudetic Mountains
Geographia Polonica (2000) vol. 73, iss. 2, pp. 111-116 | 
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Abstract
The work presents the results of research on the variability to the 24-hour air-temperature maxima, minima and amplitudes noted in the period 1901-1998 on Śnieżka - the highest peak in the Sudetic Mountains. Analysis of a 98-year measurement series revealed the presence in the area of overall, statistically-significant upward trends for maxi-mum temperature (of 0.06°C/10 years) and minimum temperature (0.12°C/10 years), as well as a downward trend for 24-hour amplitude (of -0.06°C/10 years). This points to ongoing warming and a weakening of the annual cycle to air-temperature variations in the summital zone of the Sudetic Mountains. Research on variability within thermal sequences made use of the Mann-Kendall test and revealed steady upward trends for extreme temperatures in the second half of the 20th century only, as well as a downward trend for amplitude that has been confined to the last 25 years.
Keywords: variability of air temperature, climate change, Mann-Kendall test, Sudetic Mountains
, Institute of Meteorology and Water Management, Wroclaw Branch, Parkowa 30, 51-616 Wroclaw, Poland