ABSTRACT. - Massive coolings in dobrogea between 1965-2005. In the category of climatic hazards coldness waves are also included, materialized through thermic extremes . The position of maximum and minimum air pressure areals, as well as the frequency and intensity of cooling processes, facilitate the penetration on the Dobrogea territory of some frosty and dry masses of air, which introduce large deviations, perturbations from their normal conditions. They represent non-periodical variations of the climate, whose intensity amplifies or diminishes in direct ratio to the characteristics of the underlying surface of the structure .
Key words: thermic extremes, coldness, climatic hazards, Dobrogea.