中文版 | English
CSpace
Changes in Source-Specific Black Carbon Aerosol and the Induced Radiative Effects Due to the COVID-19 Lockdown
Liu, Huikun1,2; Wang, Qiyuan1,3,4; Ye, Jianhuai5; Su, Xiaoli1; Zhang, Ting1; Zhang, Yong1; Tian, Jie1; Dong, Yunsheng6; Chen, Yang7; Zhu, Chongshu1
2021-07-16
摘要The impacts of anthropogenic emissions on the reduction of source-specific equivalent black carbon (eBC) aerosols and their direct radiative effects (DREs) were investigated during the lockdown of the coronavirus outbreak in a megacity of China in 2020. Five eBC sources were identified using a hybrid environmental receptor model. Results showed that biomass burning, traffic-related emissions, and coal combustion were the dominant contributors to eBC. The generalized additive model indicated that the reduction of traffic-related eBC during the lockdown was entirely attributed to the decrease of emissions. Decreased biomass-burning activities and favorable meteorological factors are both important drivers for the biomass-burning eBC reduction during the lockdown. A radiative transfer model showed that the DRE efficiency of eBC from biomass burning was the strongest, followed by coal combustion and traffic-related emissions. This study highlights that aggressive reduction in the consumption of residential solid fuels would be effective in achieving climate change mitigation.
DOI10.1029/2021GL092987
发表期刊GEOPHYSICAL RESEARCH LETTERS
ISSN0094-8276
卷号48期号:13页码:12
通讯作者Wang, Qiyuan(wangqy@ieecas.cn) ; Cao, Junji(cao@loess.llqg.ac.cn)
收录类别SCI
WOS记录号WOS:000694024100024
语种英语