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Zusammenfassung:
Anthropogenic global climate change results in changes of regional extremes as well as in changes in large-scale circulation patterns. The aim of this study is to analyze the past and future trends of the spatial extension, frequency, duration and intensity of temperature extremes (both heat- and freeze-related). For this purpose, we use extreme climate indices derived from daily minimum, maximum and mean temperature (Tmin, Tmax, Tmean, respectively). Datasets are used from the following sources: observation-based gridded data for Hungary (i.e. HUCLIM, 1971-2020), regional climate model simulation outputs (i.e. EURO-CORDEX data, 1951-2100) including both historical (1951-2005) and scenario (2006-2100) runs. The target area of the study is Hungary, surrounded by the Carpathian mountain chains, so anticyclones can dominate the majority or even the entire area of the Carpathian basin. Here, anticyclones tend to result in cold conditions in winter due to long, cloud-free nights, whereas heatwaves in summer due to intense solar radiation during dry days. This is why the periods of both severe winter days (when Tmin < -10 °C) and intense heatwave days (when Tmean > 27 °C for at least 3 days, Tmax > 35 °C) are analyzed in this poster.
