Horizon 1 1 17 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES Geophysical Research Letters art. L01801 [4 ] 2006 fdi:010065884 ENG Geophysical Research Letters 0094-8276 ISI:000234509100003 1 10.1029/2005GL024707 https://www.documentation.ird.fr/hor/fdi:010065884 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers15-12/010065884.pdf 33 Horizon (IRD) We used a new, 100-year, 1 x 1 degrees global fire map and a carbon cycle model (CASA) to provide a yearly gridded estimate of the temporal trend in carbon emissions due to wildfires through the 20th century. 2700 - 3325 Tg C y(-1) burn at the end of the 20th century, compared to 1500 2700 Tg C y(-1) at the beginning, with increasing uncertainty moving backward in time. There have been major changes in the regional distribution of emissions from fires, as a consequence of i) increased burning in tropical savannas and ii) a switch of emissions from temperate and boreal forests towards the tropics. The frequently- used assumption that pre-industrial emissions were 10% of present biomass burning is clearly inadequate, in terms of both the total amount and the spatial distribution of combustion. 021 ; 082 ; 112 UR060