DOI: 10.5194/tc-15-2255-2021
论文题名: Enhancement of snow albedo reduction and radiative forcing due to coated black carbon in snow
作者: Pu W. ; Shi T. ; Cui J. ; Chen Y. ; Zhou Y. ; Wang X.
刊名: Cryosphere
ISSN: 19940416
出版年: 2021
卷: 15, 期: 5 起始页码: 2255
结束页码: 2272
语种: 英语
英文关键词: accuracy assessment
; albedo
; black carbon
; climate modeling
; estimation method
; hydrological cycle
; Northern Hemisphere
; particle size
; radiative forcing
; snow cover
; solar radiation
; China
; Qinghai-Xizang Plateau
英文摘要: When black carbon (BC) is mixed internally with other atmospheric particles, the BC light absorption effect is enhanced. This study explicitly resolved the optical properties of coated BC in snow based on the core = shell Mie theory and the Snow, Ice, and Aerosol Radiative (SNICAR) model. Our results indicated that the BC coating effect enhances the reduction in snow albedo by a factor ranging from 1.1-1.8 for a nonabsorbing shell and 1.1-1.3 for an absorbing shell, depending on the BC concentration, snow grain radius, and core = shell ratio. We developed parameterizations of the BC coating effect for application to climate models, which provides a convenient way to accurately estimate the climate impact of BC in snow. Finally, based on a comprehensive set of in situ measurements across the Northern Hemisphere, we determined that the contribution of the BC coating effect to snow light absorption exceeds that of dust over northern China. Notably, high enhancements of snow albedo reduction due to the BC coating effect were found in the Arctic and Tibetan Plateau, suggesting a greater contribution of BC to the retreat of Arctic sea ice and Tibetan glaciers. © 2021 Wei Pu et al. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/164784
Appears in Collections: 气候变化与战略
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作者单位: Key Laboratory for Semi-Arid Climate Change, Ministry of Education, College of Atmospheric Sciences, Lanzhou University, Lanzhou, 730000, China; Institute of Surface-Earth System Science, Tianjin University, Tianjin, 300072, China
Recommended Citation:
Pu W.,Shi T.,Cui J.,et al. Enhancement of snow albedo reduction and radiative forcing due to coated black carbon in snow[J]. Cryosphere,2021-01-01,15(5)