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Dissolved black carbon in the global cryosphere: Concentrations and chemical signatures
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2017
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Source: Geophysical Research Letters, 44(12), 6226-6234
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Journal Title:Geophysical Research Letters
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Description:Black carbon (BC) is derived from the incomplete combustion of biomass and fossil fuels and can enhance glacial recession when deposited on snow and ice surfaces. Here we explore the in fluence of environmental conditions and the proximity to anthropogenic sources on the concentration and composition of dissolved black carbon (DBC), as measured by benzenepolycaroxylic acid (BPCA) markers, across snow, lakes, and streams from the global cryosphere. Data are presented from Antarctica, the Arctic,and high alpine regions of the Himalayas, Rockies, Andes, and Alps. DBC concentrations spanned from 0.62μg/L to 170 μg/L. The median and (2.5, 97.5) quantiles in the pristine samples were 1.8 μg/L (0.62, 12), and nonpristine samples were 21 μg/L (1.6, 170). DBC is susceptible to photodegradation when exposed to
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Source:Geophysical Research Letters, 44(12), 6226-6234
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DOI:
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ISSN:0094-8276;1944-8007;
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Rights Information:Other
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Compliance:Library
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