Char dominates black carbon aerosol emission and its historic reduction in China

Cai，Junjie1; Jiang，Hongxing1; Chen，Yingjun1,2; Liu，Zeyu1; Han，Yong1; Shen，Huizhong3; Song，Jianzhong4,5; Li，Jun4,5; Zhang，Yanlin6,7; Wang，Rong1; Chen，Jianmin1; Zhang，Gan4,5

2023-12-01

10.1038/s41467-023-42192-8

Nature Communications   影响因子和分区

2041-1723

Emission factors and inventories of black carbon (BC) aerosols are crucial for estimating their adverse atmospheric effect. However, it is imperative to separate BC emissions into char and soot subgroups due to their significantly different physicochemical properties and potential effects. Here, we present a substantial dataset of char and soot emission factors derived from field and laboratory measurements. Based on the latest results of the char-to-soot ratio, we further reconstructed the emission inventories of char and soot for the years 1960–2017 in China. Our findings indicate that char dominates annual BC emissions and its huge historical reduction, which can be attributable to the rapid changes in energy structure, combustion technology and emission standards in recent decades. Our results suggest that further BC emission reductions in both China and the world should focus on char, which mainly derives from lower-temperature combustion and is easier to decrease compared to soot.

英语

NI论文

其他

2-s2.0-85174215448

Scopus

1.Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3),Department of Environmental Science and Engineering,Fudan University,Shanghai,200438,China
2.Shanghai Institute of Pollution Control and Ecological Security,Shanghai,200092,China
3.Guangdong Provincial Observation and Research Station for Coastal Atmosphere and Climate of the Greater Bay Area,School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
4.State Key Laboratory of Organic Geochemistry,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou,510640,China
5.Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control,Guangzhou Institute of Geochemistry,Chinese Academy of Science,Guangzhou,510640,China
6.Yale–NUIST Center on Atmospheric Environment,International Joint Laboratory on Climate and Environment Change (ILCEC),Nanjing University of Information Science and Technology,Nanjing,210044,China
7.Jiangsu Provincial Key Laboratory of Agricultural Meteorology,College of Applied Meteorology,Nanjing University of Information Science and Technology,Nanjing,210044,China

Cai，Junjie,Jiang，Hongxing,Chen，Yingjun,et al. Char dominates black carbon aerosol emission and its historic reduction in China[J]. Nature Communications,2023,14(1).

Cai，Junjie.,Jiang，Hongxing.,Chen，Yingjun.,Liu，Zeyu.,Han，Yong.,...&Zhang，Gan.(2023).Char dominates black carbon aerosol emission and its historic reduction in China.Nature Communications,14(1).

Cai，Junjie,et al."Char dominates black carbon aerosol emission and its historic reduction in China".Nature Communications 14.1(2023).