This study would like to highlight and discuss two main sources of the climate changing:
1. general tendency of climate changes on long term, which could be linked with tellurian factors
2. tendency of climate changes on short term, which could be assigned to cyclic climate changing.
From this point of view, the main meteorological parameters will be analyzed using the available data measured in Bucharest area.
The study analyses also the tendency of some parameters like: atmospheric pressure, average daily temperatures of the air, precipitation, groundwater's level fluctuations and also the Danube river's flow fluctuation, as spatial and temporal integrator from continental area.
The first part will analyze the causal factors (the causal chain) of the climate change in the specified area, ignoring the medium term cyclic variations and selecting the permanent tendency of the determining parameters of the climate changing.
The second part of this study would give an interpretation of the observed data in the context of the regional climate parameters.
The conclusion of this analysis is that in the actual stage, there is a certain tendency of change for the temperate continental climate into excessive continental climate. The changing has, as specific, the increase of extreme limits of the temperature and a slight tendency for desert areas to be formed.
The case study was made for the Romanian territory (urban area) but it can be used as a basic methodology for any continental climatic zone.
Finally the study is providing some recommendations for an adequate strategy for the water supply management in the specified area.
The conclusions of this study regarding water resources management correlated with the climate changing tendency for the selected urban area, may be considered a support for the decision making process on long term at a macro-scale level.