Global projections of fluvial floods based on the ISIMIP3b ensemble of global hydrological models: flooded area fraction

Cite as

Jan Volkholz, Sandra Zimmermann, Jan Hassel (2025): Global projections of fluvial floods based on the ISIMIP3b ensemble of global hydrological models: flooded area fraction (v1.0). ISIMIP Repository. https://doi.org/10.48364/ISIMIP.294944

Metadata

DOI:
https://doi.org/10.48364/ISIMIP.294944
Title:
Global projections of fluvial floods based on the ISIMIP3b ensemble of global hydrological models: flooded area fraction
Version:
1.0
Creators:
Contact person:

For inquiries concerning this dataset, please contact info@isimip.org.

Abstract:

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.

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.

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).

Publication date:
Sept. 29, 2025
Publisher:
ISIMIP Repository
Contributors:

Here we list the persons and organizations, who are responsible for the collection, the management, and the publication of this dataset.

Rights

CC0 1.0 Universal Public Domain Dedication
CC0 1.0 Universal Public Domain Dedication (CC0 1.0)
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Version History

  • Version 1.0 was created on Sept. 29, 2025.
    this version

GCMD Keywords

  • EARTH SCIENCE > HUMAN DIMENSIONS > NATURAL HAZARDS > FLOODS
  • EARTH SCIENCE > HUMAN DIMENSIONS > NATURAL HAZARDS > TROPICAL CYCLONES
  • Global Change Master Directory (GCMD) Keywords are a hierarchical set of controlled vocabularies maintained by NASA (more information).

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