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Black Carbon in Deep-Sea Sediments
Open accessAbstract
Black carbon (BC) enters the ocean through aerosol and river deposition. BC makes up 12 to 31 percent of the sedimentary organic carbon (SOC) at two deep ocean sites, and it is 2400 to 13,900 carbon-14 years older than non-BC SOC deposited concurrently. BC is likely older because it is stored in an intermediate reservoir before sedimentary deposition. Possible intermediate pools are oceanic dissolved organic carbon (DOC) and terrestrial soils. If DOC is the intermediate reservoir, then BC is 4 to 22 percent of the DOC pool. If soils are the intermediate reservoir, then the importance of riverine carbon in the ocean carbon cycle has been underestimated.
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“For example, biochar was several thousand years older than nonblack C in some soils.(67) This timescale of biochar stability could contribute to efforts to achieve net-zero GHG emissions in the next few decades to avert harmful climate impacts.”
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Metadata
- Authors
- Masiello, C. A., & Druffel, E. R. M.
- Venue
- Science
- Published
- 1998-06-19
- Volume
- 280
- Issue
- 5371
- Pages
- 1911-1913
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2038287838
- Cited by
- 493
- References
- 0
- FWCI
- 9.27
- Type
- journal article
- Language
- en
- Open access
- green
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
