10.48364/ISIMIP.294944 Jan Volkholz Jan Volkholz 0000-0002-2533-3739 Sandra Zimmermann Sandra Zimmermann 0009-0005-0130-0528 Jan Hassel Jan Hassel 0009-0004-9648-8326 ISIMIP Repository 2025 EARTH SCIENCE > HUMAN DIMENSIONS > NATURAL HAZARDS > FLOODS EARTH SCIENCE > HUMAN DIMENSIONS > NATURAL HAZARDS > TROPICAL CYCLONES Matthias Büchner Matthias Büchner 0000-0002-1382-7424 Jochen Klar Jochen Klar 0000-0002-5883-4273 Lisa Novak Lisa Novak 0009-0003-5086-1079 Stefanie Heinicke Stefanie Heinicke 0000-0003-0222-5281 Matthias Mengel Matthias Mengel 0000-0001-6724-9685 Christian Otto Christian Otto 0000-0001-5500-6774 Franziska Piontek Franziska Piontek 0000-0003-4305-7552 Dánnell Quesada-Chacón Dánnell Quesada-Chacón 0000-0001-5700-1846 Christopher P.O. Reyer Christopher P.O. Reyer 0000-0003-1067-1492 Inga Sauer Inga Sauer 0000-0002-9302-2131 Jacob Schewe Jacob Schewe 0000-0001-9455-4159 Jan Volkholz Jan Volkholz 0000-0002-2533-3739 Martin Park Martin Park 0000-0002-2467-3256 Katja Frieler Katja Frieler 0000-0003-4869-3013 Potsdam Institute for Climate Impact Research (PIK) 03e8s1d88 2025-09-29 en Output dataset https://www.isimip.org https://doi.org/10.5281/zenodo.17297526 1.0 CC0 1.0 Universal Public Domain Dedication This dataset includes global, gridded flooded area fractions at 0.25 degree horizontal resolution, derived from state-of-the-art climate, hydrological, and hydrodynamic model simulations, prepared in the context of CMIP6 and ISIMIP3b (www.isimip.org, Frieler et al., in prep.), respectively. They describe the flooded area fraction associated with annual maximum flood depth in each grid cell, under pre-industrial, historical, and future climatic conditions according to different scenarios of greenhouse gas concentrations; and under different assumptions about flood protection standards.<br>The flooded area fraction relates to the fraction of a unit catchment that is inundated. Each unit catchment corresponds to a 0.25° x 0.25° grid cell but is irregularly shaped, which means that the flood fraction does not exactly represent the inundated fraction of the grid cell; this should be kept in mind when analysing the data.<br>The data can be used for assessing the risks associated with flood hazard, such as risks to life, livelihoods, health, or economic assets. In the context of the EU Horizon project TipESM, they support the assessment of potential tipping dynamics in household recovery from climate-induced shocks and related poverty risks, as well as flood-induced human displacement risk (Schewe et al., 2025). global -179.5 179.5 -89.5 89.5