Pan-Arctic Patterns in Black Carbon Sources and Fluvial Discharges Deduced From Radiocarbon and PAH Source Apportionment Markers In Estuarine Surface Sediments
A pan-arctic geospatial picture of black carbon (BC) characteristics was obtained from the seven largest arctic rivers by combining with molecular combustion markers (polycyclic aromatic hydrocarbons) and radiocarbon ((14)C) analysis. The results suggested that the contribution from modern biomass b...
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ftsouthmissispun:oai:aquila.usm.edu:fac_pubs-2503 2023-07-30T04:00:25+02:00 Pan-Arctic Patterns in Black Carbon Sources and Fluvial Discharges Deduced From Radiocarbon and PAH Source Apportionment Markers In Estuarine Surface Sediments Elmquist, Marie Semiletov, Igor Guo, Laodong Gustafsson, Örjan 2008-05-29T07:00:00Z application/pdf https://aquila.usm.edu/fac_pubs/1504 https://aquila.usm.edu/context/fac_pubs/article/2503/viewcontent/pan_arctic_patterns.pdf unknown The Aquila Digital Community https://aquila.usm.edu/fac_pubs/1504 https://aquila.usm.edu/context/fac_pubs/article/2503/viewcontent/pan_arctic_patterns.pdf Faculty Publications Life Sciences Marine Biology text 2008 ftsouthmissispun 2023-07-15T18:42:34Z A pan-arctic geospatial picture of black carbon (BC) characteristics was obtained from the seven largest arctic rivers by combining with molecular combustion markers (polycyclic aromatic hydrocarbons) and radiocarbon ((14)C) analysis. The results suggested that the contribution from modern biomass burning to BC ranged from low in the Yukon (8%) and Lena (5%) Rivers to high in the Yenisey River (88%). The Mackenzie River contributed almost half of the total arctic fluvial BC export of 202 kton a(-1) (kton = 10(9) g), with the five Russian-Arctic rivers contributing 10-36 kton a(-1) each. The (14)C-based source estimate of fluvially exported BC to the Arctic Ocean, weighted by the riverine BC fluxes, amount to about 20% from vegetation/biofuel burning and 80% from (14)C-extinct sources such as fossil fuel combustion and relict BC in uplifted source rocks. Combining these pan-arctic data with available estimates of BC export from other rivers gave a revised estimate of global riverine BC export flux of 26 x 10(3) kton a(-1). This is twice higher than a single previous estimate and confirms that river export of BC is a more important pathway of BC to the oceans than direct atmospheric deposition. Text Arctic Arctic Ocean black carbon Mackenzie river yenisey river Yukon The University of Southern Mississippi: The Aquila Digital Community Arctic Arctic Ocean Mackenzie River Yenisey ENVELOPE(82.680,82.680,71.828,71.828) Yukon |
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Open Polar |
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The University of Southern Mississippi: The Aquila Digital Community |
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ftsouthmissispun |
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unknown |
topic |
Life Sciences Marine Biology |
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Life Sciences Marine Biology Elmquist, Marie Semiletov, Igor Guo, Laodong Gustafsson, Örjan Pan-Arctic Patterns in Black Carbon Sources and Fluvial Discharges Deduced From Radiocarbon and PAH Source Apportionment Markers In Estuarine Surface Sediments |
topic_facet |
Life Sciences Marine Biology |
description |
A pan-arctic geospatial picture of black carbon (BC) characteristics was obtained from the seven largest arctic rivers by combining with molecular combustion markers (polycyclic aromatic hydrocarbons) and radiocarbon ((14)C) analysis. The results suggested that the contribution from modern biomass burning to BC ranged from low in the Yukon (8%) and Lena (5%) Rivers to high in the Yenisey River (88%). The Mackenzie River contributed almost half of the total arctic fluvial BC export of 202 kton a(-1) (kton = 10(9) g), with the five Russian-Arctic rivers contributing 10-36 kton a(-1) each. The (14)C-based source estimate of fluvially exported BC to the Arctic Ocean, weighted by the riverine BC fluxes, amount to about 20% from vegetation/biofuel burning and 80% from (14)C-extinct sources such as fossil fuel combustion and relict BC in uplifted source rocks. Combining these pan-arctic data with available estimates of BC export from other rivers gave a revised estimate of global riverine BC export flux of 26 x 10(3) kton a(-1). This is twice higher than a single previous estimate and confirms that river export of BC is a more important pathway of BC to the oceans than direct atmospheric deposition. |
format |
Text |
author |
Elmquist, Marie Semiletov, Igor Guo, Laodong Gustafsson, Örjan |
author_facet |
Elmquist, Marie Semiletov, Igor Guo, Laodong Gustafsson, Örjan |
author_sort |
Elmquist, Marie |
title |
Pan-Arctic Patterns in Black Carbon Sources and Fluvial Discharges Deduced From Radiocarbon and PAH Source Apportionment Markers In Estuarine Surface Sediments |
title_short |
Pan-Arctic Patterns in Black Carbon Sources and Fluvial Discharges Deduced From Radiocarbon and PAH Source Apportionment Markers In Estuarine Surface Sediments |
title_full |
Pan-Arctic Patterns in Black Carbon Sources and Fluvial Discharges Deduced From Radiocarbon and PAH Source Apportionment Markers In Estuarine Surface Sediments |
title_fullStr |
Pan-Arctic Patterns in Black Carbon Sources and Fluvial Discharges Deduced From Radiocarbon and PAH Source Apportionment Markers In Estuarine Surface Sediments |
title_full_unstemmed |
Pan-Arctic Patterns in Black Carbon Sources and Fluvial Discharges Deduced From Radiocarbon and PAH Source Apportionment Markers In Estuarine Surface Sediments |
title_sort |
pan-arctic patterns in black carbon sources and fluvial discharges deduced from radiocarbon and pah source apportionment markers in estuarine surface sediments |
publisher |
The Aquila Digital Community |
publishDate |
2008 |
url |
https://aquila.usm.edu/fac_pubs/1504 https://aquila.usm.edu/context/fac_pubs/article/2503/viewcontent/pan_arctic_patterns.pdf |
long_lat |
ENVELOPE(82.680,82.680,71.828,71.828) |
geographic |
Arctic Arctic Ocean Mackenzie River Yenisey Yukon |
geographic_facet |
Arctic Arctic Ocean Mackenzie River Yenisey Yukon |
genre |
Arctic Arctic Ocean black carbon Mackenzie river yenisey river Yukon |
genre_facet |
Arctic Arctic Ocean black carbon Mackenzie river yenisey river Yukon |
op_source |
Faculty Publications |
op_relation |
https://aquila.usm.edu/fac_pubs/1504 https://aquila.usm.edu/context/fac_pubs/article/2503/viewcontent/pan_arctic_patterns.pdf |
_version_ |
1772810919975321600 |