Abstract:
This study reveals the climate and its changes in the period 1979–2018 in the following karst regions in Bulgaria – Devetashko Plateau, Brestnishka Karst Geosystem, Trigrad, Dabrash and Shumensko Plateau. Statistical methods are the main tool in this research. The climate of the five model karst regions is largely dependent on their location, especially on their altitude. A widespread rise in air temperatures and evaporation is observed in the months of the warm half-year. Precipitation increases mainly in September and October, and decreases in August.