Open tomalrussell opened 2 years ago
GAR17 fluvial flood maps gar-17.csv
Linked from: https://risk.preventionweb.net/index.html
Global Assessment Report Atlas global flood hazard data. (2015) https://risk.preventionweb.net/metadata/7.html
Metadata abstract:
The GAR Atlas global flood hazard assessment uses a probabilistic approach for modelling riverine flood major river basins around the globe. This has been possible after compiling a global database of stream-flow data, merging different sources and gathering more than 8000 stations over the globe in order to calculate the range of possible discharges from very low to the maximum possible scales at different locations along the rivers. The calculated discharges were introduced in the river sections to model water levels downstream. This procedure allowed for the determination of stochastic event-sets of riverine floods from which hazard maps for several return periods (25, 50, 100, 200, 500, 1000 years) were obtained. The hazard maps are developed at 1kmx1km resolution and have been validated against satellite flood footprints from different sources (DFO archive, UNOSAT flood portal) performing well especially for big events For smaller events (lower return periods), the GAR Atlas flood hazard maps tend to overestimate with respect to similar maps produced locally (hazard maps where available for some countries and were used as benchmark). The main issue being that, due to the resolution, the GAR Atlas flood hazard maps do not take into account flood defenses that are normally present to preserve the value exposed to floods. More information about the flood hazard assessment can be found in the background paper (Rudari et al., 2015).
Background paper citation:
Roberto Rudari, Francesco Silvestro, Lorenzo Campo, Nicola Rebora, Giorgio Boni, Christian Herold. “Improvement of the global flood model for the GAR 2015.” (2015) CIMA Foundation and UNEP. Accessible at https://www.preventionweb.net/english/hyogo/gar/2015/en/bgdocs/risk-section/CIMA%20Foundation,%20Improvement%20of%20the%20Global%20Flood%20Model%20for%20the%20GAR15.pdf
Additional return-period maps for flooding and extreme heat.
Links for ISIMIP and Deltares data:
GRII_open_hazard_links.csv
Deltares Global Flood Maps (coastal flooding)
Linked from https://planetarycomputer.microsoft.com/dataset/deltares-floods
ISIMIP2b Output Data for Lange et al. (2020)
Linked from https://data.isimip.org/search/tree/ISIMIP2b/DerivedOutputData/lange2020/hwmid-humidex/
JRC Global River Flooding
jrc-global.csv
Linked from https://data.jrc.ec.europa.eu/collection/id-0054