Μελέτη ακραίων δεικτών βροχόπτωσης στη περιοχή της Θεσσαλονίκης: Σύγκριση με δεδομένα της βάσης ERA-Interim και ανάλυση των μελλοντικών αλλαγών τους με τη χρήση ενός δυναμικού περιοχικού μοντέλου. = On the study of extreme precipitaion indices over the Thessaloniki region: A comarison with the re-analysis data ERA-Interim future esitmations using a regional climate model.
Περίληψη
Extreme rainfall events have a significant impact on the economy, agriculture, the environment, and the society. The IPCC report (2012) underlines that, on a global scale, extreme rainfall events present in general positive trends. On the other hand, the estimations regarding the extreme events in the Mediterranean region differentiate. In Greece, extreme rainfall events are estimated to present decreasing trends during past and future time periods. In the present study rainfall daily data were utilized from the meteorological station of the Department of Meteorology and Climatology of the Aristotle University of Thessaloniki A.U.TH., from the ERA-Interim database and the regional climate model RegCM4. The scope of this study is the analysis of extreme rainfall indices and the study of their trends, and the comparison of the equivalent indices from the ERA-Interim database. Moreover, on the next step of the analysis the ERA-interim results were used for the assessment of the ability of the regional climate model RegCM4 to simulate these extreme indices during the present time period. Finally, the future projections of the respected indices over the last 21 years of the 21st century were analyzed for the region of Thessaloniki.
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