气候变化领域集成服务门户(CCPortal): Measurement report: Strong light absorption induced by aged biomass burning black carbon over the southeastern Tibetan Plateau in pre-monsoon season

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DOI	10.5194/acp-21-8499-2021
	Measurement report: Strong light absorption induced by aged biomass burning black carbon over the southeastern Tibetan Plateau in pre-monsoon season
	Tan T.; Hu M.; Du Z.; Zhao G.; Shang D.; Zheng J.; Qin Y.; Li M.; Wu Y.; Zeng L.; Guo S.; Wu Z.
发表日期	2021
ISSN	1680-7316
起始页码	8499
结束页码	8510
卷号	21 期号:11
英文摘要	During the pre-monsoon season, biomass burning (BB) activities are intensive in southern Asia. Facilitated by westerly circulation, those BB plumes can be transported to the Tibetan Plateau (TP). Black carbon (BC), the main aerosol species in BB emissions, is an important climate warming agent, and its absorbing property strongly depends on its size distribution and mixing state. To elucidate the influence of those transported BB plumes on the TP, a field campaign was conducted on the southeast edge of the TP during the pre-monsoon season. It was found that the transported BB plumes substantially increased the number concentration of the atmospheric BC particles by a factor of 13 and greatly elevated the number fraction of thickly coated BC from 52% up to 91 %. Those transported BC particles had slightly larger core size and much thicker coatings than the background BC particles. However, the coating mass was not evenly distributed on BC particles with different sizes. The smaller BC cores were found to have larger shell = core ratios than the larger cores. Besides, the transported BB plumes strongly affected the vertical variation in the BC's abundance and mixing state, resulting in a higher concentration, larger number fraction, and higher aging degree of BC particles in the upper atmosphere. Resulting from both increase in BC loading and aging degree, the transported BB plumes eventually enhanced the total light absorption by a factor of 15, of which 21% was contributed by the BC aging, and 79% was contributed from the increase in BC mass. Particularly, the light absorption enhancement induced by the aging process during long-range transport has far exceeded the background aerosol light absorption, which implicates a significant influence of BC aging on climate warming over the TP region. © Author(s) 2021.
语种	英语
scopus关键词	absorption; aging; biomass burning; black carbon; long range transport; mixing; monsoon; size distribution; China; Qinghai-Xizang Plateau
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/246837
作者单位	State Key Joint Laboratory of Environmental Simulation and Pollution Control, International Joint Laboratory for Regional Pollution Control, Ministry of Education (IJRC), College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China
推荐引用方式 GB/T 7714	Tan T.,Hu M.,Du Z.,et al. Measurement report: Strong light absorption induced by aged biomass burning black carbon over the southeastern Tibetan Plateau in pre-monsoon season[J],2021,21(11).
APA	Tan T..,Hu M..,Du Z..,Zhao G..,Shang D..,...&Wu Z..(2021).Measurement report: Strong light absorption induced by aged biomass burning black carbon over the southeastern Tibetan Plateau in pre-monsoon season.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(11).
MLA	Tan T.,et al."Measurement report: Strong light absorption induced by aged biomass burning black carbon over the southeastern Tibetan Plateau in pre-monsoon season".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.11(2021).