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Seasonal Statistical Variability of Precipitations in Dobrogea and Danube Delta

Seasonal Statistical Variability of Precipitations in Dobrogea and Danube Delta
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Author(s): Gabriel Minea (National Institute of Hydrology and Water Management, Romania), Georgeta Bandoc (University of Bucharest, Romania)and Gianina Neculau (National Institute of Hydrology and Water Management, Romania)
Copyright: 2015
Pages: 16
Source title: Extreme Weather and Impacts of Climate Change on Water Resources in the Dobrogea Region
Source Author(s)/Editor(s): Carmen Maftei (“Ovidius” University of Constanta, Romania)
DOI: 10.4018/978-1-4666-8438-6.ch001

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Abstract

The objective of this chapter is to highlight the seasonal statistical variability of rainfalls in Danube Delta and Dobrogea Tableland (Romania), considering the extreme and outliers values. The geomorphological and evaporimetric features of this region are also mentioned. Area of study is a complex geographical region, with two major units: the Dobrogea Tableland and the Danube Delta spread over 14,695 sq. km in the south-eastern part of Romania. The outcomes show that the minimum and maximum values of the lower quartile median and of the upper quartile median with the highest values occur in summer. The lowest values occur for all the indicators during winter and there are intermediate values for all indicators during autumn and spring. Regarding the seasonal variability of rainfalls, it has a mosaic distribution of the outliers and extreme values. The extreme values record a small number of values, both in autumn and summer. The maximum number of extreme values is during spring and winter. The drought is amplified by evaporation from water surface in summer.

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