Black carbon emissions in China
- 11 July 2001
- journal article
- Published by Elsevier BV in Atmospheric Environment
- Vol. 35 (25), 4281-4296
- https://doi.org/10.1016/s1352-2310(01)00179-0
Abstract
Black carbon (BC) is an important aerosol species because of its global and regional influence on radiative forcing and its local effects on the environment and human health. We have estimated the emissions of BC in China, where roughly one-fourth of global anthropogenic emissions is believed to originate. China's high rates of usage of coal and biofuels are primarily responsible for high BC emissions. This paper pays particular attention to the application of appropriate emission factors for China and the attenuation of these emissions where control devices are used. Nevertheless, because of the high degree of uncertainty associated with BC emission factors, we provide ranges of uncertainty for our emission estimates, which are approximately a factor of eight. In our central case, we calculate that BC emissions in China in 1995 were 1342 Gg, about 83% being generated by the residential combustion of coal and biofuels. We estimate that BC emissions could fall to 1224 Gg by 2020. This 9% decrease in BC emissions can be contrasted with the expected increase of 50% in energy use; the reduction will be obtained because of a transition to more advanced technology, including greater use of coal briquettes in place of raw coal in cities and towns. The increased use of diesel vehicles in the future will result in a greater share of the transport sector in total BC emissions. Spatially, BC emissions are predominantly distributed in an east–west swath across China's heartland, where the rural use of coal and biofuels for cooking and heating is widespread. This is in contrast to the emissions of most other anthropogenically derived air pollutants, which are closely tied to population and industrial centers.Keywords
This publication has 47 references indexed in Scilit:
- Quantifying the emission of light‐absorbing particles: Measurements tailored to climate studiesGeophysical Research Letters, 1998
- Sources of unburned carbon in the fly ash produced from low-NOx pulverized coal combustionSymposium (International) on Combustion, 1998
- Energy use, emissions, and air pollution reduction strategies in AsiaWater, Air, & Soil Pollution, 1995
- Airborne particulate elemental carbon: Its sources, transport and contribution to dark smoke and soilingAtmospheric Environment. Part A. General Topics, 1991
- Indoor air sampling and mutagenicity studies of emissions from unvented coal combustionEnvironmental Science & Technology, 1987
- Characteristics of Individual Particles at a Rural Site in the Eastern United StatesJournal of the Air Pollution Control Association, 1986
- Smoke from diesel-engined road vehicles: An investigation into the basis of british and european emission standardsAtmospheric Environment (1967), 1983
- Particulate Emission Factors for Small Wood and Coal StovesJournal of the Air Pollution Control Association, 1982
- Influence of heavy fuel oil composition and boiler combustion conditions on particulate emissionsEnvironmental Science & Technology, 1976
- EmissionsofPolynuclear Hydrocarbonsand otherPollutantsfromHeat-GenerationandIncineration ProcessesJournal of the Air Pollution Control Association, 1964