Climate change impact study on 100-year floods of selected Slovak catchments

Year, pages: 2020, 160 - 171

During the ongoing climate change, this work provides an analysis of the modelled expected change in floods (100-year) for 11 Slovak river basins. It also analyses the possibilities of using data from the latest climate projections of global and regional models from the EURO-CORDEX initiative, as well as outputs from two hydrological models from the SWICCA database (Service for Water Indicators in Climate Change Adaptation) within the Copernicus service, for regional conditions in Slovakia. To estimate the 100-year flood, a frequency analysis was applied to each member of the climate and hydrological model output ensemble. The statistical distribution of generalized extreme values (GEV) was used. In case the data showed a significant trend, the non-stationarity of the environment was also taken into account. The bias of hydrological models outputs were corrected by the variance scaling method. The results indicate an increase in Q100 for seven gauges, a decrease for three gauges and for one station no change in Q100 (change more than ± 5%). Based on the results, we recommend applying hydrological data from the SWICCA database, preferably for large to medium-sized river basins.

Kopáčiková, E., Hlaváčiková, H., Lešková, D. 2020. Climate change impact study on 100-year floods of selected Slovak catchments. In Acta Hydrologica Slovaca, vol. 21, no.2, pp. 160-171. 2644-4690. DOI: https://doi.org/10.31577/ahs-2020-0021.02.0020

Kopáčiková, E., Hlaváčiková, H., Lešková, D. (2020). Climate change impact study on 100-year floods of selected Slovak catchments. Acta Hydrologica Slovaca, 21(2), 160-171. 2644-4690. DOI: https://doi.org/10.31577/ahs-2020-0021.02.0020

Publisher: Institute of Hydrology SAS, Dúbravská cesta 9, 841 05 Bratislava, Slovakia