Fig. 6: Characterizing contemporary fire regimes.

The five largest spatial regimes are determined and represented with different colors for the R1 pyrome after a kernel and contour level analysis. Despite belonging to the same pyrome, dense observation areas are spread in regions with different climatic and demographic characteristics. In this pyrome, regimes cover parts of the western coast of Canada and Alaska (dark green), the Amazonian forest of Peru and Brazil (blue), the North America great lakes area (green), the eastern extreme of Russia (orange), and the central Asia region (gray). Notable differences can be observed between these regions in a location and landcover distribution; b socio-demographic and climatic attributes; and (c–e) seasonal fire characteristics per regime including: c monthly average fire size with 95% confidence intervals shown as shades, d yearly fire frequency, and e monthly average fire frequency. The land covers observed in the pyrome include savannas (WDS, SAV), grasslands (GRS), conifers (ENC), evergreen broadleaf palmate (EBP), shrublands (OSL), mixed forest (MFS), water bodies (WBS), non-vegetated (NV), croplands (CRO), and permanent wetlands (PWL).