https://doi.org/10.5194/cp-2020-92 Preprint. Discussion started: 20 July 2020 c Author(s) 2020. CC BY 4.0 License. Central Europe, 1531–1540 CE: The driest summer decade of the past five centuries? Rudolf Brázdil1,2, Petr Dobrovolný1,2, Martin Bauch3, Chantal Camenisch4,5, Andrea Kiss6,7, 5 Oldřich Kotyza8, Piotr Oliński9, Ladislava Řezníčková1,2 1Institute of Geography, Masaryk University, Brno, Czech Republic 2Global Change Research Institute, Czech Academy of Sciences, Brno, Czech Republic 3Leibniz Institute for the History and Culture of Eastern Europe (GWZO), Leipzig, Germany 10 4Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland 5Institute of History, University of Bern, Bern, Switzerland 6Institute for Hydraulic Engineering and Water Resources Management, Vienna University of Technology, Vienna, Austria 7Department of Historical Auxiliary Sciences, Institute of History, University of Szeged, 15 Hungary 8Regional Museum, Litoměřice, Czech Republic 9Institute of History and Archival Sciences, University of Toruń, Poland Correspondence to: Rudolf Brázdil (
[email protected]) 20 Abstract. Based on three drought indices (SPI, SPEI, Z-index) reconstructed from the documentary evidence and instrumental records, the summers of 1531–1540 were identified as the driest summer decade during the 1501–2015 period in the Czech Lands. Based on documentary data, extended from the Czech scale to central Europe, dry patterns of various 25 intensities (represented, for example, by dry spells, low numbers of precipitation days, very low rivers and drying-out of water sources) occurred in 1532, 1534–1536, 1538 and particularly 1540, broken by wetter or normal patterns in 1531, 1533, 1537 and 1539.