Late Spring and Early Autumn Frosts in Connection with Global Warming

During the last 150 years, an increase of mean air temperatures as well as that of mean daily minimal air temperatures takes place. Due to this warming the last spring frosts occur about two weeks earlier and the first autumn frosts occur about one week later. These shifts mean that the frost-free period becomes longer by about three weeks. This fact may be favourable for farmers and gardeners. However, considerable fluctuations accompany these shifts, which limit the possible expectations of better conditions for the agriculture. Due to the location of the station used these results represent only the general trends, not any numerical values used in local farming.