干旱区生态环境知识资源中心

The risky climatic phenomena represent the object of various research projects, due to the specific charecteristics they exhibit (severity, recurrence, temporality, spacial effects, etc.), being in the attention of international organs and organisations through their special economic and ecological impact. Drought and aridity are major permanent risks for the climate of Central and South Dobrudja territory. Knowledge of aridity and drought is also necessary to explain the characteristics of the geographical landscape for the rational use of water resources. Water resources and their quality are declining, and this is a severely limiting factor both for Central and South Dobrudja and the world, particularly with increasing aridity due to global warming predicted by some climate scenarios. Knowledge of aridity and drought is also necessary to explain the characteristics of the geographical landscape for the rational use of water resources. Definition and characterisation of drought and aridity in this paper as intensity were done by several methods and indicators, starting with continuing with the De Martonne aridity index (1926), reference evapotranspiration (potential), the Thornthwaite aridity index (1948), atandardised precipitation index, and anomalous standardised index. Aridity in Central and South Dobrudja is highlighted by all climatic drought and aridity indices presented above; additional indicators can also be used. Dryness and drought phenomena are climate risks triggering environmental risks that affect both food production and entire geographic environment, including public health in Central and South Dobrudja.