Status: this preprint is open for discussion and under review for Natural Hazards and Earth System Sciences (NHESS).
Brief communication: Simulations indicate, the multi-year drought of 2018–2023 could have happened in the 1960s
Oliver Bothe
Abstract. Duration and intensity of the multi-year drought of 2018–2023 had not been anticipated in Germany. Self-calibrating Palmer Drought Severity Index (scPDSI) data calculated from EURO-CORDEX regional climate simulations shows multi-year, high-intensity droughts occurring over large portions of Germany throughout the period 1950 to 2100. Although droughts lasting about 5.5 years and affecting more than half of Germany like the observed 2018–2023 event are rare in the simulations, even longer and more intense large-scale droughts occur. Consequently, multi-year large scale drought was part of the past climatology for Germany and projections stress the necessity to build resilience to comparable and even more impactful events.
Received: 31 Aug 2026 – Discussion started: 29 Sep 2026
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Notebook, Input data, and Output Figures for "Brief communication: Simulations indicate, the multi-year drought of 2018-2023 could have happened in the 1960s"Oliver Bothe https://doi.org/10.5281/zenodo.22029762
Oliver Bothe
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Are multi-year droughts only a future thread for Germany or could they also have happened in the past? Climate simulation data suggest that intense multi-year droughts affecting large parts of Germany could have happened in the past but are more likely to occur in the future under ongoing global warming.
Are multi-year droughts only a future thread for Germany or could they also have happened in the...