Instruments called Moderate Resolution Imaging Spectroradiometers (MODIS) located on two of NASA’s Earth-observing satellites have shown that “some 70 percent of the world’s fires occur in Africa, and more than 50 percent of the total area burned in the last two decades (since 2011) has occurred on that continent, due largely to the extensive burning of savanna grasslands during the dry season.”
Interestingly, the Earth Policy Institute (EPI) forecasts fewer fires in tropical Africa due to “regional wetter conditions projected with increased global temperatures”. EPI also mention parts of Sub-Saharan Africa will see fewer fires because of the lack of vegetation to burn, but more fires as temperatures rise in the “Sahel and southern Africa”.