Black carbon emissions in China from 1949 to 2050.
Black carbon (BC) emissions from China are of global concern. A new BC emission inventory (PKU-BC(China)) has been developed with the following improvements: (1) The emission factor database was updated; (2) a 0.1° × 0.1° gridded map was produced for 2007 based on county-level proxies; (3) time trends were derived for 1949-2007 and predicted for 2008-2050; and (4) the uncertainties associated with the inventory were quantified. It was estimated that 1957 Gg of BC were emitted in China in 2007, which is greater than previously reported. Residential coal combustion was the largest source, followed by residential biofuel burning, coke production, diesel vehicles, and brick kilns. By using a county-level disaggregation method, spatial bias in province-level disaggregation, mainly due to uneven per capita emissions within provinces, was reduced by 42.5%. Emissions increased steadily since 1949 until leveling off in the mid-1990s, due to a series of technological advances and to socioeconomic progress. BC emissions in China in 2050 are predicted to be 920-2183 Gg/yr under various scenarios; and the industrial and transportation sectors stand to benefit the most from technological improvements.
Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China.
Rong
R
Wang
Shu
S
Tao
Wentao
W
Wang
Junfeng
J
Liu
Huizhong
H
Shen
Guofeng
G
Shen
Bin
B
Wang
Xiaopeng
X
Liu
Wei
W
Li
Ye
Y
Huang
Yanyan
Y
Zhang
Yan
Y
Lu
Han
H
Chen
Yuanchen
Y
Chen
Chen
C
Wang
Dan
D
Zhu
Xilong
X
Wang
Bengang
B
Li
Wenxin
W
Liu
Jianmin
J
Ma
D000393:Air Pollutants / Q000032:analysis*; D002681:China; D005843:Geography; D006802:Human Activities; D006801:Humans; D053260:Soot / Q000032:analysis*; D013997:Time Factors
D000393:Air Pollutants; D053260:Soot