globalchange  > 科学计划与规划
DOI: 10.1002/2016GL068574
论文题名:
Cycling of black carbon in the ocean
作者: Coppola A.I.; Druffel E.R.M.
刊名: Geophysical Research Letters
ISSN: 0094-9058
EISSN: 1944-8789
出版年: 2016
卷: 43, 期:9
起始页码: 4477
结束页码: 4482
语种: 英语
英文关键词: marine dissolved black carbon ; marine dissolved organic carbon ; pyrogenic carbon ; radiocarbon ; solid phase extraction
Scopus关键词: Dissolution ; Fossil fuels ; Lakes ; Oceanography ; Organic carbon ; Phase separation ; Stream flow ; Time measurement ; Arctic ocean ; Black carbon ; Carbon cycles ; Dissolved organic carbon ; Radiocarbon ; Solid-phase extraction ; Time-scales ; World Ocean ; Extraction
英文摘要: Black carbon (BC) is a by-product of combustion from wildfires and fossil fuels and is a slow-cycling component of the carbon cycle. Whether BC accumulates and ages on millennial time scales in the world oceans has remained unknown. Here we quantified dissolved BC (DBC) in marine dissolved organic carbon isolated by solid phase extraction at several sites in the world ocean. We find that DBC in the Atlantic, Pacific, and Arctic oceans ranges from 1.4 to 2.6 μM in the surface and is 1.2 ± 0.1 μM in the deep Atlantic. The average 14C age of surface DBC is 4800 ± 620 14C years and much older in a deep water sample (23,000 ± 3000 14C years). The range of DBC structures and 14C ages indicates that DBC is not homogeneous in the ocean. We show that there are at least two distinct pools of marine DBC, a younger pool that cycles on centennial time scales and an ancient pool that cycles on >105 year time scales. © 2016. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84966668132&doi=10.1002%2f2016GL068574&partnerID=40&md5=e534552cd97602ceca3561590b0adb6f
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10021
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: Department of Earth System Science, University of California, Irvine, CA, United States

Recommended Citation:
Coppola A.I.,Druffel E.R.M.. Cycling of black carbon in the ocean[J]. Geophysical Research Letters,2016-01-01,43(9).
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