气候变化领域集成服务门户(CCPortal): Retention and radiative forcing of black carbon in eastern Sierra Nevada snow

CCPortal

DOI	10.5194/tc-7-365-2013
	Retention and radiative forcing of black carbon in eastern Sierra Nevada snow
	Sterle K.M.; McConnell J.R.; Dozier J.; Edwards R.; Flanner M.G.
发表日期	2013
ISSN	19940416
卷号	7 期号:1
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).
学科领域	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
语种	英语
scopus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
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/120299
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
推荐引用方式 GB/T 7714	Sterle K.M.,McConnell J.R.,Dozier J.,et al. Retention and radiative forcing of black carbon in eastern Sierra Nevada snow[J],2013,7(1).
APA	Sterle K.M.,McConnell J.R.,Dozier J.,Edwards R.,&Flanner M.G..(2013).Retention and radiative forcing of black carbon in eastern Sierra Nevada snow.Cryosphere,7(1).
MLA	Sterle K.M.,et al."Retention and radiative forcing of black carbon in eastern Sierra Nevada snow".Cryosphere 7.1(2013).