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Trends, temporal and spatial characteristics, and uncertainties in biomass burning emissions in the Pearl River Delta, China
Abstract Multi-year inventories of biomass burning emissions were established in the Pearl River Delta (PRD) region for the period 2003–2007 based on the collected activity data and emission factors. The results indicated that emissions of sulfur dioxide (SO2), nitrogen oxide (NOx), ammonia (NH3), methane (CH4), organic carbon (OC), non-methane volatile organic compounds (NMVOC), carbon monoxide (CO), and fine particulate matter (PM2.5) presented clear declining trends. Domestic biofuel burning was the major contributor, accounting for more than 60% of the total emissions. The preliminary temporal profiles were established with MODIS fire count information, showing that higher emissions were observed in winter (from November to March) than other seasons. The emissions were spatially allocated into grid cells with a resolution of 3 km × 3 km, using GIS-based land use data as spatial surrogates. Large amount of emissions were observed mostly in the less developed areas in the PRD region. The uncertainties in biomass burning emission estimates were quantified using Monte Carlo simulation; the results showed that there were higher uncertainties in organic carbon (OC) and elemental carbon (EC) emission estimates, ranging from −71% to 133% and −70% to 128%, and relatively lower uncertainties in SO2, NOx and CO emission estimates. The key uncertainty sources of the developed inventory included emission factors and parameters used for estimating biomass burning amounts.
Highlights ► Declining trends in biomass burning emissions are found in the PRD region. ► Domestic biofuel is the largest contributor to the PRD biomass burning emissions. ► Gridded biomass burning emissions are developed and ready for model use. ► Higher emissions occur in winter and most distributed over the less developed areas. ► Higher uncertainties in OC and EC emission estimates.
Trends, temporal and spatial characteristics, and uncertainties in biomass burning emissions in the Pearl River Delta, China
Abstract Multi-year inventories of biomass burning emissions were established in the Pearl River Delta (PRD) region for the period 2003–2007 based on the collected activity data and emission factors. The results indicated that emissions of sulfur dioxide (SO2), nitrogen oxide (NOx), ammonia (NH3), methane (CH4), organic carbon (OC), non-methane volatile organic compounds (NMVOC), carbon monoxide (CO), and fine particulate matter (PM2.5) presented clear declining trends. Domestic biofuel burning was the major contributor, accounting for more than 60% of the total emissions. The preliminary temporal profiles were established with MODIS fire count information, showing that higher emissions were observed in winter (from November to March) than other seasons. The emissions were spatially allocated into grid cells with a resolution of 3 km × 3 km, using GIS-based land use data as spatial surrogates. Large amount of emissions were observed mostly in the less developed areas in the PRD region. The uncertainties in biomass burning emission estimates were quantified using Monte Carlo simulation; the results showed that there were higher uncertainties in organic carbon (OC) and elemental carbon (EC) emission estimates, ranging from −71% to 133% and −70% to 128%, and relatively lower uncertainties in SO2, NOx and CO emission estimates. The key uncertainty sources of the developed inventory included emission factors and parameters used for estimating biomass burning amounts.
Highlights ► Declining trends in biomass burning emissions are found in the PRD region. ► Domestic biofuel is the largest contributor to the PRD biomass burning emissions. ► Gridded biomass burning emissions are developed and ready for model use. ► Higher emissions occur in winter and most distributed over the less developed areas. ► Higher uncertainties in OC and EC emission estimates.
Trends, temporal and spatial characteristics, and uncertainties in biomass burning emissions in the Pearl River Delta, China
He, Min (author) / Zheng, Junyu (author) / Yin, Shasha (author) / Zhang, Yingyi (author)
Atmospheric Environment ; 45 ; 4051-4059
2011-04-08
9 pages
Article (Journal)
Electronic Resource
English