Wintertime cold and warm spells in the eastern part of the Baltic Sea region

One of the most important uncertainties in a changing climate conditions are changes extremes. While precipitation extremes particularly at low latitudes, thermal major interest mid-latitudes. This study analyses cold (CS) and warm (WS) spells winter climatology eastern part Baltic Sea region from 1951 till 2020. Data E-OBS database were used research. A CS/WS this is an event when extreme low/high (below 10th/above 90th percentile) air temperature persists for least 5 days. The period 1971–2000 was as norm. results show that both absolute minimum maximum increased over investigation period. strongly after 1988, statistically significant regime shift determined. number WSs has cases. Meanwhile, recurrence duration CSs have changed insignificantly, although years with more than one decreasing. total cases per season slightly increased. Total days lot last decade period, while insignificantly recent several decades.