Changes in temperature extremes and their possible causes at the SE boundary of the Alps

A trend analysis is performed on the years 1954 to 1995 annual and seasonal mean maximum and minimum temperature, diurnal temperature range, air pressure, and occurrence of different weather types, grouped according to the related diurnal temperature ranges for two mountain stations ill Croatia. During the last 42 years an increase in annual mean maximum and mean minimum temperature has occurred. At both stations the increase in mean maximum was faster than in the mean minimum. resulting in an increase in mean diurnal temperature range. At the same time mean annual air pressure shows a significant increase both at Zavizan and at Puntijarka. An increase in occurrence of weather types with high diurnal temperature range appears at both locations, but is significant only at the inland station of Puntijarka.