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| Main Authors: | , , , , , , , , , , , , , , , , , |
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| Format: | Dataset Open Access |
| Language: | en |
| Published: |
PANGAEA
2018
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| Subjects: | |
| Online Access: | https://doi.org/10.1594/PANGAEA.893618 |
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| _version_ | 1867170086464258048 |
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| author | Coppola, Alysha I Wiedemeier, Daniel B Galy, Valier Haghipour, Negar Hanke, Ulrich M Nascimento, Gabriela S Usman, Muhammed Ojoshogu Blattmann, Thomas Michael Reisser, Moritz Freymond, Chantal V Zhao, Meixun Voss, Britta Wacker, Lukas Schefuß, Enno Peucker-Ehrenbrink, Bernhard Abiven, Samuel Schmidt, Michael W I Eglinton, Timothy Ian |
| author_facet | Coppola, Alysha I Wiedemeier, Daniel B Galy, Valier Haghipour, Negar Hanke, Ulrich M Nascimento, Gabriela S Usman, Muhammed Ojoshogu Blattmann, Thomas Michael Reisser, Moritz Freymond, Chantal V Zhao, Meixun Voss, Britta Wacker, Lukas Schefuß, Enno Peucker-Ehrenbrink, Bernhard Abiven, Samuel Schmidt, Michael W I Eglinton, Timothy Ian |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Wildfires and incomplete combustion of fossil fuel produce large amounts of black carbon. Black carbon production and transport are essential components of the carbon cycle. Constraining estimates of black carbon exported from land to ocean is critical, given ongoing changes in land use and climate, which affect fire occurrence and black carbon dynamics. Here, we present an inventory of the concentration and radiocarbon content (∆14C) of particulate black carbon for 18 rivers around the globe. We find that particulate black carbon accounts for about 15.8 ± 0.9% of river particulate organic carbon, and that fluxes of particulate black carbon co-vary with river-suspended sediment, indicating that particulate black carbon export is primarily controlled by erosion. River particulate black carbon is not exclusively from modern sources but is also aged in intermediate terrestrial carbon pools in several high-latitude rivers, with ages of up to 17,000 14C years. The flux-weighted 14C average age of particulate black carbon exported to oceans is 3,700 ± 400 14C years. We estimate that the annual global flux of particulate black carbon to the ocean is 0.017 to 0.037 Pg, accounting for 4 to 32% of the annually produced black carbon. When buried in marine sediments, particulate black carbon is sequestered to form a long-term sink for CO2. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_893618 |
| institution | PANGAEA |
| language | en |
| publishDate | 2018 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Global river particulate black carbon amounts, 14C values, 14C ages and benzene polycarboxylic acid marker compounds Coppola, Alysha I Wiedemeier, Daniel B Galy, Valier Haghipour, Negar Hanke, Ulrich M Nascimento, Gabriela S Usman, Muhammed Ojoshogu Blattmann, Thomas Michael Reisser, Moritz Freymond, Chantal V Zhao, Meixun Voss, Britta Wacker, Lukas Schefuß, Enno Peucker-Ehrenbrink, Bernhard Abiven, Samuel Schmidt, Michael W I Eglinton, Timothy Ian Wildfires and incomplete combustion of fossil fuel produce large amounts of black carbon. Black carbon production and transport are essential components of the carbon cycle. Constraining estimates of black carbon exported from land to ocean is critical, given ongoing changes in land use and climate, which affect fire occurrence and black carbon dynamics. Here, we present an inventory of the concentration and radiocarbon content (∆14C) of particulate black carbon for 18 rivers around the globe. We find that particulate black carbon accounts for about 15.8 ± 0.9% of river particulate organic carbon, and that fluxes of particulate black carbon co-vary with river-suspended sediment, indicating that particulate black carbon export is primarily controlled by erosion. River particulate black carbon is not exclusively from modern sources but is also aged in intermediate terrestrial carbon pools in several high-latitude rivers, with ages of up to 17,000 14C years. The flux-weighted 14C average age of particulate black carbon exported to oceans is 3,700 ± 400 14C years. We estimate that the annual global flux of particulate black carbon to the ocean is 0.017 to 0.037 Pg, accounting for 4 to 32% of the annually produced black carbon. When buried in marine sediments, particulate black carbon is sequestered to form a long-term sink for CO2. |
| title | Global river particulate black carbon amounts, 14C values, 14C ages and benzene polycarboxylic acid marker compounds |
| topic | |
| url | https://doi.org/10.1594/PANGAEA.893618 |