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DOI10.5194/tc-15-2255-2021
Enhancement of snow albedo reduction and radiative forcing due to coated black carbon in snow
Pu W.; Shi T.; Cui J.; Chen Y.; Zhou Y.; Wang X.
发表日期2021
ISSN19940416
起始页码2255
结束页码2272
卷号15期号:5
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.
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
语种英语
来源期刊Cryosphere
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/202406
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
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GB/T 7714
Pu W.,Shi T.,Cui J.,et al. Enhancement of snow albedo reduction and radiative forcing due to coated black carbon in snow[J],2021,15(5).
APA Pu W.,Shi T.,Cui J.,Chen Y.,Zhou Y.,&Wang X..(2021).Enhancement of snow albedo reduction and radiative forcing due to coated black carbon in snow.Cryosphere,15(5).
MLA Pu W.,et al."Enhancement of snow albedo reduction and radiative forcing due to coated black carbon in snow".Cryosphere 15.5(2021).
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