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DOI	10.1016/j.atmosenv.2021.118244
	Quantification and implication of measurement bias of ambient atmospheric BC concentration
	Li C.; Zhang C.; Kang S.; Gustafsson Ö.
发表日期	2021
ISSN	1352-2310
卷号	249
英文摘要	Black carbon (BC) aerosols have severe impacts on climate and health. Most atmospheric BC loadings are now predominantly reported for the PM2.5 size cut-off. Based on 39 published set of ambient BC concentrations from around the world where PM2.5 and PM10 were collected in parallel, we demonstrate that BC in PM2.5 was only around 80% of that in PM10. The implication is that around 20% of BC in the global ambient atmosphere is ignored with the now-legacy PM2.5 sampling approach. Correspondingly, BC of freshly emitted particles from combustion activities is dominantly reported in terms of PM2.5, and thus inflicting a bias in the total BC emission inventories. A consequence is that ambient BC is underpredicted when derived from models based on (PM2.5) emission inventories. This consideration contributes to reconcile existing systematic offset between model predictions and observation-based estimates of climate-relevant effects of anthropogenic BC aerosols. We propose that total ambient BC concentration should be considered rather than the PM2.5 portion to reduce the uncertainties in estimates of BC effects on the climate. © 2021 Elsevier Ltd
语种	英语
来源期刊	Atmospheric Environment
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/168975
作者单位	State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China; Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, 100101, China; CAS Center for Excellence in Tibetan Plateau Earth Science, Beijing, 100101, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Department of Environmental Science and Analytical Chemistry, The Bolin Centre for Climate Research, Stockholm University, Stockholm, 10691, Sweden
推荐引用方式 GB/T 7714	Li C.,Zhang C.,Kang S.,et al. Quantification and implication of measurement bias of ambient atmospheric BC concentration[J]. 中国科学院西北生态环境资源研究院,2021,249.
APA	Li C.,Zhang C.,Kang S.,&Gustafsson Ö..(2021).Quantification and implication of measurement bias of ambient atmospheric BC concentration.Atmospheric Environment,249.
MLA	Li C.,et al."Quantification and implication of measurement bias of ambient atmospheric BC concentration".Atmospheric Environment 249(2021).