WEATHER ANOMALIES AND INFLUENCE ON BULGARIEN SECTION OF DANUBE RIVER

The provision of information on recent, past and current meteorological conditions, together with data on the hydrological and tidal states, are essential components of an appraisal and forecasting procedures. Meteorological products and weather forecasts are effective applications to river management. In this paper we analyzed the weather anomalies over Balkans and relation with the extremely water stages in Bulgarian section of Danube river during the period of 2005 – August 2007. Seasonal fluctuations in water levels as well as the flooding of riparian areas are natural features of running. Two more flood waves occurred in Bulgaria in spring and in summer of 2005. During April-May of 2006 the river Danube in Bulgaria reached the highest levels since 1895. Flooded area of Bulgaria: 5,500 ha. After for long drought the levels of Bulgarian section of Danube reached to standard water stages in the end of the spring of 2007. The changes in the precipitation patterns over the year can lead to more flooding in some regions or seasons and more droughts in other, more frequent land slides and soil erosion. Annual precipitation trends in Europe are much more varied than temperature trends. Weather extremes are becoming more frequent in Europe: e.g. the summer of 2005, spring of 2006 and. The attention was paid to Danube water level in Bulgarian section during the above periods and the anomalies of synoptic situations. The results are shown on Figures. We analyzed (NAO) and relationship to regional temperature and precipitation over Bulgaria. The NAO is a phenomenon associated with winter fluctuations in temperatures, rainfall and storminess over much of Europe