A High Resolution And Multi-year Emission Inventory For Biomass Burning In Northeast China During 2001–2017

Open Biomass Burning releases a large amount of trace gases and aerosols,which is of great significance to global atmospheric chemistry,climate change and potential human health.Substance?MCD14DL?and local biomass data?updated biomass load data and conversion coverage data?MCD12Q1??,from which the new high 2001-2017 open biomass combustion mechanism?1km×1km?and multi-year emission inventory.The emissions of various substances in open biomass combustion are calculated by burning area?BAs?,fuel load?FLs?,combustion factors?CFs?and updated specific source emission factors?EFs?.During 2001-2017,the Northeast region The annual average emissions of CO,CH₄,NO_x,NMVOC,SO₂,NH₃,PM_2.5,PM₁₀,OC,BC,and CO₂ from open biomass combustion reached 1538.0 Gg,95.1 Gg,69.8 Gg,258.5 Gg,11.3 Gg,18.8 Gg,225.3Gg,321.8 Gg,133.7 Gg,23.4 Gg and 30816.8 Gg,respectively.Emissions are high in the central northeast,east and south.Straw burning is the largest cause of emissions,accounting for 89%and86%,respectively.Forest fires are the biggest cause of forest,peatlands,cracks and grassland fires.The space size of open biomass combustion emissions and the pattern of combustion area are consistent.Volume,from 2001 to 2017,open biomass combustion emissions showed a similar time trend,and the year varies greatly.The year of the emissions occurs internally in March and April.During the spring and autumn harvest periods in October and November,high biomass combustion emissions are concentrated in areas of agricultural and rural activity areas.Emissions from open biomass burning have increased year by year,and there are two high abnormal values caused by forest fire in 2003 and 2008.