Fig. 1

Maximum multiscale roughness. Quasi-global representation of the MERIT-derived maximum multiscale roughness (rough-magnitude), computed under Equi7 with a pixel size of 100 m using the computation parameters reported in the Multiscale roughness description. For the purpose of plotting the graphs, the 100 m resolution was aggregated to 1 km (10 × 10 pixels) by calculating the mean. Projection distortion of each Equi7 zone does not allow the merging of zones for a global continuous surface. However, the zones have been positioned adjacent to each other as a mosaic of six projections with gaps in between, to present a quasi-global map. Global visualisation in WGS84 for the other geomorphometric variables can be seen on the Geomorpho90m webpage60.