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National Technical University of Athens (NTUA) 2016

Εκτίμηση αρδευτικών αναγκών και συσχέτιση αυτών με δείκτες ξηρασίας σε περιοχές της νότιας Ελλάδας

Mastrokosta, Angeliki

Titre : Εκτίμηση αρδευτικών αναγκών και συσχέτιση αυτών με δείκτες ξηρασίας σε περιοχές της νότιας Ελλάδας

Auteur : Mastrokosta, Angeliki ; Μαστροκώστα, Αγγελική

Université de soutenance : National Technical University of Athens (NTUA)

Grade : Master Thesis 2016

Résumé
The goal of this research work is the estimation of irrigation needs in a detailed spatial scale and the correlation between those needs and drought indices, in selected areas of southern Greece, in a monthly basis. The study area refers to municipalities of Tripolis, Kalamata, Heraklion and Hersonissos, which are mainly agricultural, especially in the lowlands. The data which were used are air temperature, precipitation and crop distribution per area, in order to estimate potential evapotranspiration, irrigation needs, Aridity Index, Standardized Precipitation Index (SPI3, SPI6) and Pinna. The monthly time series of air temperature and precipitation were analyzed for the period from 1957 to 2004. The potential evapotranspiration was calculated according to Thornthwaite’s method. Additionally, the irrigation needs were estimated by the Blaney - Criddle method. Three drought indices (AI, SPI, PINNA) were used, in order to evaluate the drought conditions in a monthly basis. The corresponding results depict a slight association with the trends of irrigation needs and drought indices time series. Finally, an appropriate autoregressive model was applied in combination with a climate change scenario (A1B, IPCC) in order to investigate differences in the sensitivity of drought indices in several climate variances, between the three selected areas.

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Page publiée le 25 février 2017