globalchange  > 影响、适应和脆弱性
DOI: 10.5194/tc-7-365-2013
Scopus记录号: 2-s2.0-84874483415
论文题名:
Retention and radiative forcing of black carbon in eastern Sierra Nevada snow
作者: Sterle K; M; , McConnell J; R; , Dozier J; , Edwards R; , Flanner M; G
刊名: Cryosphere
ISSN: 19940416
出版年: 2013
卷: 7, 期:1
起始页码: 365
结束页码: 374
语种: 英语
英文关键词: absorbance ; albedo ; black carbon ; concentration (composition) ; cryosphere ; dust ; ion ; melt ; radiation balance ; radiative forcing ; retention ; snow cover ; snowmelt ; snowpack ; water management ; California ; Sierra Nevada [California] ; United States
英文摘要: When contaminated by absorbing particles, such as refractory black carbon (rBC) and continental dust, snow's albedo decreases and thus its absorption of solar radiation increases, thereby hastening snowmelt. For this reason, an understanding of rBC's affect on snow albedo, melt processes, and radiation balance is critical for water management, especially in a changing climate. Measurements of rBC in a sequence of snow pits and surface snow samples in the eastern Sierra Nevada of California during the snow accumulation and ablation seasons of 2009 show that concentrations of rBC were enhanced sevenfold in surface snow (∼25 ng g-1) compared to bulk values in the snowpack (∼3 ng g-1). Unlike major ions, which were preferentially released during the initial melt, rBC and continental dust were retained in the snow, enhancing concentrations well into late spring, until a final flush occurred during the ablation period. We estimate a combined rBC and continental dust surface radiative forcing of 20 to 40 W m-2 during April and May, with dust likely contributing a greater share of the forcing. © 2013 Author(s).
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/74991
Appears in Collections:影响、适应和脆弱性
气候变化与战略

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作者单位: Division of Hydrologic Sciences, Desert Research Institute, 2215 Raggio Parkway, Reno, NV 89512, United States; Bren School of Environmental Science and Management, University of California, Santa Barbara, CA 93106, United States; Department of Imaging and Applied Physics, Curtin University of Technology Australia, 78 Murray Street, Perth, WA 6000, Australia; Department of Atmospheric, Oceanic and Space Sciences, University of Michigan, 2455 Hayward St., Ann Arbor, MI 48109, United States

Recommended Citation:
Sterle K,M,, McConnell J,et al. Retention and radiative forcing of black carbon in eastern Sierra Nevada snow[J]. Cryosphere,2013-01-01,7(1)
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