Extended Data Fig. 3: Distribution of Landsat 5, 7 and 8 imagery.
From: Satellite imaging reveals increased proportion of population exposed to floods
The Landsat images used to evaluate 123 flood events in the Global Flood Database are globally distributed, cover 15 biomes66 and span 15 years. Flood events for validation were selected on the basis of availability of Landsat imagery. Eligibility of imagery included conditions that Landsat imagery occurred within 24 h of the maximum day of inundation, intersected the flood area and had less than 20% cloud cover. Biome shapefile for the base map (grey shading; https://ecoregions.appspot.com/) indicates varying vegetation patterns that may influence the accuracy of our remote sensing algorithm.