Figure 1.

Scaled average global emissions from biomass burning (bb, purple) and fossil fuels (ff, red) from 1997 to 2010. Average global emissions by grid cell from 1997 to 2010 were scaled from zero to one by dividing each cell's emissions by the maximum emissions across all cells. Original data sources: Global Fire Emissions Database (GFED; http://www.globalfiredata.org/data.html) and Carbon Dioxide Information Analysis Center (CDIAC; http://cdiac.ornl.gov/). The CDIAC data (1.0 degree resolution) were disaggregated to match the spatial resolution of the GFED4s data (0.25 degree resolution).