气候变化领域集成服务门户(CCPortal): Measurements of light-absorbing particles on the glaciers in the Cordillera Blanca, Peru

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DOI	10.5194/tc-9-331-2015
	Measurements of light-absorbing particles on the glaciers in the Cordillera Blanca, Peru
	Schmitt C.G.; All J.D.; Schwarz J.P.; Arnott W.P.; Cole R.J.; Lapham E.; Celestian A.
发表日期	2015
ISSN	19940416
卷号	9 期号:1
英文摘要	Glaciers in the tropical Andes have been rapidly losing mass since the 1970s. In addition to the documented increase in temperature, increases in light-absorbing particles deposited on glaciers could be contributing to the observed glacier loss. Here we report on measurements of light-absorbing particles sampled from glaciers during three surveys in the Cordillera Blanca Mountains in Peru. During three research expeditions in the dry seasons (May-August) of 2011, 2012 and 2013, 240 snow samples were collected from 15 mountain peaks over altitudes ranging from 4800 to nearly 6800 m. Several mountains were sampled each of the 3 years and some mountains were sampled multiple times during the same year. Collected snow samples were melted and filtered in the field then later analyzed using the Light Absorption Heating Method (LAHM), a new technique that measures the ability of particles on filters to absorb visible light. LAHM results have been calibrated using filters with known amounts of fullerene soot, a common industrial surrogate for black carbon (BC). As sample filters often contain dust in addition to BC, results are presented in terms of effective black carbon (eBC). During the 2013 survey, snow samples were collected and kept frozen for analysis with a Single Particle Soot Photometer (SP2). Calculated eBC mass from the LAHM analysis and the SP2 refractory black carbon (rBC) results were well correlated (r2 Combining double low line 0.92). These results indicate that a substantial portion of the light-absorbing particles in the more polluted regions were likely BC. The 3 years of data show that glaciers in the Cordillera Blanca Mountains close to human population centers have substantially higher levels of eBC (as high as 70 ng g-1) than remote glaciers (as low as 2.0 ng g-1 eBC), indicating that population centers can influence local glaciers by sourcing BC. © Author(s) 2015.
学科领域	absorption; black carbon; data set; filter; glacier mass balance; light effect; measurement method; temperature effect; Ancash; Cordillera Blanca; Cordillera Occidental [Peru]; Peru
语种	英语
scopus关键词	absorption; black carbon; data set; filter; glacier mass balance; light effect; measurement method; temperature effect; Ancash; Cordillera Blanca; Cordillera Occidental [Peru]; Peru
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/119955
作者单位	National Center for Atmospheric Research, Boulder, CO, United States; American Climber Science Program, Eldora, CO, United States; Department of Geography and Geology, Western Kentucky University, Bowling Green, KY, United States; Chemical Sciences Division, Earth System Research Laboratory, National Oceanic and Atmospheric Administration, Boulder, CO, United States; Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, United States; Department of Physics, University of Nevada, Reno, NE, United States; Institute of Arctic and Alpine Research, University of Colorado, Boulder, CO, United States; Department of Natural Resources and Environmental Management, University of Hawaii, Manoa, HI, United States
推荐引用方式 GB/T 7714	Schmitt C.G.,All J.D.,Schwarz J.P.,et al. Measurements of light-absorbing particles on the glaciers in the Cordillera Blanca, Peru[J],2015,9(1).
APA	Schmitt C.G..,All J.D..,Schwarz J.P..,Arnott W.P..,Cole R.J..,...&Celestian A..(2015).Measurements of light-absorbing particles on the glaciers in the Cordillera Blanca, Peru.Cryosphere,9(1).
MLA	Schmitt C.G.,et al."Measurements of light-absorbing particles on the glaciers in the Cordillera Blanca, Peru".Cryosphere 9.1(2015).