Global fire emissions and the contribution of deforestation, savanna, forest, agricultural, and peat fires (1997–2009)

作者：Guido R. van der Werf, James T. Randerson, Louis Giglio, G. J. Collatz, M. Mu, P. S. Kasibhatla, Douglas C. Morton, Ruth DeFries, Yufang Jin, T. T. van Leeuwen · 发表于：Atmospheric chemistry and physics · 年份：2010 · DOI：10.5194/acp-10-11707-2010 · 被引用次数：3249 · 研究领域：Fire effects on ecosystems、Atmospheric and Environmental Gas Dynamics、Fire dynamics and safety research

Abstract. New burned area datasets and top-down constraints from atmospheric concentration measurements of pyrogenic gases have decreased the large uncertainty in fire emissions estimates. However, significant gaps remain in our understanding of the contribution of deforestation, savanna, forest, agricultural waste, and peat fires to total global fire emissions. Here we used a revised version of the Carnegie-Ames-Stanford-Approach (CASA) biogeochemical model and improved satellite-derived estimates of area burned, fire activity, and plant productivity to calculate fire emissions for the 1997–2009 period on a 0.5° spatial resolution with a monthly time step. For November 2000 onwards, estimates were based on burned area, active fire detections, and plant productivity from the MODerate resolution Imaging Spectroradiometer (MODIS) sensor. For the partitioning we focused on the MODIS era. We used maps of burned area derived from the Tropical Rainfall Measuring Mission (TRMM) Visible and Infrared Scanner (VIRS) and Along-Track Scanning Radiometer (ATSR) active fire data prior to MODIS (1997–2000) and estimates of plant productivity derived from Advanced Very High Resolution Radiometer (AVHRR) observations during the same period. Average global fire carbon emissions according to this version 3 of the Global Fire Emissions Database (GFED3) were 2.0 Pg C year−1 with significant interannual variability during 1997–2001 (2.8 Pg C year−1 in 1998 and 1.6 Pg C year−1 in 2001). Globally, e...