||Modeling the precipitation evolution at a regional
scale is a topic of interest in order to predict the weather evolution
and climate change, with their multiple consequences, in a region
where the annual drought frequency is about 89%, as in Dobrudja.
Therefore, in this article we present the result of modeling the annual
and monthly precipitation evolution in the period January 1965 -
December 2005, in Dobrudja, a region of situated in the South – East
of Romania, between the Danube and The Black Sea. ANOVA,
followed by the Tukey LSD and the Scheffe tests led us to the
conclusion that between the ten studied series, one has a particular
behavior, due to the geographical position of the meteorological
station. Thus, the precipitation evolution in the entire region has been
modeled using the data provided by the other nine series, with small
loss of information. The models proposed by us used nonparametric
approach (wavelets and smoothing splines) and the comparison
between them has been done.