Measurement report: Quantifying source contribution and radiative forcing of fossil fuel and biomass burning black carbon aerosol in the southeastern margin of Tibetan Plateau

doi:10.5194/acp-2020-408

GSTDTAP > 地球科学

DOI	10.5194/acp-2020-408
	Measurement report: Quantifying source contribution and radiative forcing of fossil fuel and biomass burning black carbon aerosol in the southeastern margin of Tibetan Plateau
	Huikun Liu, Qiyuan Wang, Li Xing, Yong Zhang, Ting Zhang, Weikang Ran, and Junji Cao
	2020-06-23
发表期刊	Atmospheric Chemistry and Physics
出版年	2020
英文摘要	Black carbon (BC) aerosol plays a vital role in disturbing the balance of ecosystem and climate stability of Tibetan Plateau (TP). An intensive campaign was carried out from 14^th March to 12^th May 2018 in the southeastern margin of TP to investigate the sources of BC and their radiative effects. To do so, an improved aethalometer model was used to distinguish and apportion BC into fossil fuel combustion source and biomass burning source. To minimize the uncertainty associated with the aethalometer model, a receptor model coupling multi-wavelength absorption with chemical species was used to retrieve the site-dependent Ångström exponent (AAE) and BC mass absorption cross-section (MAC). The results show that the AAEs and BC MACs at wavelength of 880 nm were 0.9 and 12.3 m² g⁻¹ for fossil fuel source and 1.7 and 10.4 m² g⁻¹ for biomass burning, respectively. Based on these parameters, the fossil fuel source-related BC (BC_fossil) was estimated 43 % of the total BC and the rest 57 % was from biomass burning (BC_biomass) during the campaign. The results from a regional chemical dynamical model reveal that high BC_biomass was contributed from the northeastern India and northern Burma, and the Southeast Asia can explain 40 % of BC_biomass. The high BC_fossil was mainly identified from the southeast of sampling site. A radiative transfer model estimated that the atmospheric directive radiative forcing of BC was +4.6 ± 2.4 W m⁻² on average, including +2.5 ± 1.8 W m⁻² from BC_biomass, and +2.1 ± 0.9 W m⁻² from BC_fossil, which correspond to and heating rates of 0.07 ± 0.05 and 0.06 ± 0.02 K day⁻¹, respectively. Our study will be useful for improving our understanding in BC sources on the TP and their climatic effect.
领域	地球科学
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/278105
专题	地球科学
推荐引用方式 GB/T 7714	Huikun Liu, Qiyuan Wang, Li Xing, Yong Zhang, Ting Zhang, Weikang Ran, and Junji Cao. Measurement report: Quantifying source contribution and radiative forcing of fossil fuel and biomass burning black carbon aerosol in the southeastern margin of Tibetan Plateau[J]. Atmospheric Chemistry and Physics,2020.
APA	Huikun Liu, Qiyuan Wang, Li Xing, Yong Zhang, Ting Zhang, Weikang Ran, and Junji Cao.(2020).Measurement report: Quantifying source contribution and radiative forcing of fossil fuel and biomass burning black carbon aerosol in the southeastern margin of Tibetan Plateau.Atmospheric Chemistry and Physics.
MLA	Huikun Liu, Qiyuan Wang, Li Xing, Yong Zhang, Ting Zhang, Weikang Ran, and Junji Cao."Measurement report: Quantifying source contribution and radiative forcing of fossil fuel and biomass burning black carbon aerosol in the southeastern margin of Tibetan Plateau".Atmospheric Chemistry and Physics (2020).