Abstract The Pirin Mountains in southwest Bulgaria spatially mark a transition between the
Mediterranean and temperate climate zones. Therefore they are also particularly relevant for …

The objective of this paper is to determine the influence of circulation factors on precipitation
in Bulgaria. The study succeeds investigation on the influence of circulation factors on air …

Groundwater regime in Bulgaria is influenced by climate variability. The impact is evident
especially for karst water. A time series analysis of spring discharge for selected karst basins …

The problems of snowiness and thermal conditions of winters are of high interest of
investigations because of the more frequent droughts, occurred in the region. In the present …

In this paper the attention was paid to the atmosphere circulation during the winter time of
2001/02 over Atlantic Ocean and Europe. Notable temperature extremes during December …