What was done
The author analyzed data pertaining to seasonal snow cover duration and seasonal maximum snow depth for Cracow and Zakopane for the period 1895/96-1998/99.

What was learned
Falarz reports finding "no statistically significant trends" for the century-long period for either of the parameters studied.

What it means
In the words of the author, "the global warming found in the 20th century (IPCC, 1996) and the increasing tendency of air temperature in Europe in particular in winter (Schonwiese and Rapp, 1997), as well as the 'local' trends of the same features (Trepinska and Kowanetz, 1997; Wibig, 2000; e.g. the increase of mean air temperature in Cracow of 1.7°C/100 yr in January), seem to have no clear reflection in snow cover conditions in southern Poland in the 20th century."  These observations make one wonder if the temperature increases are more indicative of urban heat island intensification than of real-world global warming.

References
IPCC.  1996.  Climate Change 1995: The Science of Climate Change.  Cambridge University Press, Cambridge, UK.

Schonwiese C.D. and Rapp, J.  1997.  Climate Trend Atlas of Europe Based on Observations 1891-1990.  Kluwer Academic Publishers, Dordrecht, The Netherlands.

Trepinska, J. and Kowanetz, L.  1997.  Many years' course of mean monthly values of air temperature in Cracow, 1792-1995.  In: Trepinska, J., Ed. Climate Fluctuations in Cracow (1792-1995).  Institute of Geography, Jagiellonien University, Cracow, Poland, pp. 99-130.

Wibig, J.  2000.  Temporal variability of the frequency of extreme temperature occurrence in Poland on the example of Zakopane and Lodz.  In: Obrebska-Starkel, B., Ed.  Images of Weather and Climate.  Prace Geograficzne of the Institute of Geography, Jagiellonien University, Cracow, Poland, pp. 215-222.