Spatial characteristics and removal of dissolved black carbon in the western Arctic Ocean and Bering Sea
In the Arctic, large amounts of black carbon (BC) are released into river water and transported to the oceans as dissolved BC (DBC). However, the cycling and fate of DBC in the ocean is poorly understood. Here, DBC, dissolved organic carbon (DOC), absorbance, and δ18O were analyzed to examine the sp...
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ftunivsthongkong:oai:repository.hkust.edu.hk:1783.1-110686 2023-05-15T14:27:52+02:00 Spatial characteristics and removal of dissolved black carbon in the western Arctic Ocean and Bering Sea Fang, Ziming Yang, Weifeng Stubbins, Aron Chen, Min Li, Junjie Jia, Renming Li, Qi Zhu, Jing Wang, Bo 2021 https://repository.hkust.edu.hk/ir/Record/1783.1-110686 https://doi.org/10.1016/j.gca.2021.04.024 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=0016-7037&rft.volume=v. 304&rft.issue=&rft.date=2021&rft.spage=178&rft.aulast=Fang&rft.aufirst=Z.&rft.atitle=Spatial+characteristics+and+removal+of+dissolved+black+carbon+in+the+western+Arctic+Ocean+and+Bering+Sea&rft.title=Geochimica+et+Cosmochimica+Acta http://www.scopus.com/record/display.url?eid=2-s2.0-85105568141&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000655500800010 English eng https://repository.hkust.edu.hk/ir/Record/1783.1-110686 Geochimica et Cosmochimica Acta, v. 304, July 2021, p. 178-190 0016-7037 https://doi.org/10.1016/j.gca.2021.04.024 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=0016-7037&rft.volume=v. 304&rft.issue=&rft.date=2021&rft.spage=178&rft.aulast=Fang&rft.aufirst=Z.&rft.atitle=Spatial+characteristics+and+removal+of+dissolved+black+carbon+in+the+western+Arctic+Ocean+and+Bering+Sea&rft.title=Geochimica+et+Cosmochimica+Acta http://www.scopus.com/record/display.url?eid=2-s2.0-85105568141&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000655500800010 Arctic Ocean Bering Sea Chukchi Sea Dissolved black carbon Dissolved organic carbon Article 2021 ftunivsthongkong https://doi.org/10.1016/j.gca.2021.04.024 2022-09-09T00:07:56Z In the Arctic, large amounts of black carbon (BC) are released into river water and transported to the oceans as dissolved BC (DBC). However, the cycling and fate of DBC in the ocean is poorly understood. Here, DBC, dissolved organic carbon (DOC), absorbance, and δ18O were analyzed to examine the spatial characteristics and removal of DBC in the western Arctic Ocean and the Bering Sea during the boreal summer. DBC concentrations ranged from 0.67 to 4.18 μmol-C L−1. In the sea-ice free regions, high DBC and DOC concentrations and a254 values corresponded to high δ18O-derived meteoric water contents, indicating that river discharge dominated their spatial patterns. By contrast, sea-ice meltwater (SIM) appeared to dilute DBC and DOC in SIM impacted waters (SIM > 3.5%). The departure of DBC from conservative mixing lines suggested that 47–84% of riverine DBC was removed over the shelves with 7–23% transported to the upper Canada Basin. These results suggest that shelf regions are crucial sites for riverine DBC removal that modulate the delivery of DBC to the open Arctic Ocean. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Bering Sea black carbon canada basin Chukchi Chukchi Sea Sea ice The Hong Kong University of Science and Technology: HKUST Institutional Repository Arctic Arctic Ocean Bering Sea Canada Chukchi Sea Geochimica et Cosmochimica Acta 304 178 190 |
institution |
Open Polar |
collection |
The Hong Kong University of Science and Technology: HKUST Institutional Repository |
op_collection_id |
ftunivsthongkong |
language |
English |
topic |
Arctic Ocean Bering Sea Chukchi Sea Dissolved black carbon Dissolved organic carbon |
spellingShingle |
Arctic Ocean Bering Sea Chukchi Sea Dissolved black carbon Dissolved organic carbon Fang, Ziming Yang, Weifeng Stubbins, Aron Chen, Min Li, Junjie Jia, Renming Li, Qi Zhu, Jing Wang, Bo Spatial characteristics and removal of dissolved black carbon in the western Arctic Ocean and Bering Sea |
topic_facet |
Arctic Ocean Bering Sea Chukchi Sea Dissolved black carbon Dissolved organic carbon |
description |
In the Arctic, large amounts of black carbon (BC) are released into river water and transported to the oceans as dissolved BC (DBC). However, the cycling and fate of DBC in the ocean is poorly understood. Here, DBC, dissolved organic carbon (DOC), absorbance, and δ18O were analyzed to examine the spatial characteristics and removal of DBC in the western Arctic Ocean and the Bering Sea during the boreal summer. DBC concentrations ranged from 0.67 to 4.18 μmol-C L−1. In the sea-ice free regions, high DBC and DOC concentrations and a254 values corresponded to high δ18O-derived meteoric water contents, indicating that river discharge dominated their spatial patterns. By contrast, sea-ice meltwater (SIM) appeared to dilute DBC and DOC in SIM impacted waters (SIM > 3.5%). The departure of DBC from conservative mixing lines suggested that 47–84% of riverine DBC was removed over the shelves with 7–23% transported to the upper Canada Basin. These results suggest that shelf regions are crucial sites for riverine DBC removal that modulate the delivery of DBC to the open Arctic Ocean. |
format |
Article in Journal/Newspaper |
author |
Fang, Ziming Yang, Weifeng Stubbins, Aron Chen, Min Li, Junjie Jia, Renming Li, Qi Zhu, Jing Wang, Bo |
author_facet |
Fang, Ziming Yang, Weifeng Stubbins, Aron Chen, Min Li, Junjie Jia, Renming Li, Qi Zhu, Jing Wang, Bo |
author_sort |
Fang, Ziming |
title |
Spatial characteristics and removal of dissolved black carbon in the western Arctic Ocean and Bering Sea |
title_short |
Spatial characteristics and removal of dissolved black carbon in the western Arctic Ocean and Bering Sea |
title_full |
Spatial characteristics and removal of dissolved black carbon in the western Arctic Ocean and Bering Sea |
title_fullStr |
Spatial characteristics and removal of dissolved black carbon in the western Arctic Ocean and Bering Sea |
title_full_unstemmed |
Spatial characteristics and removal of dissolved black carbon in the western Arctic Ocean and Bering Sea |
title_sort |
spatial characteristics and removal of dissolved black carbon in the western arctic ocean and bering sea |
publishDate |
2021 |
url |
https://repository.hkust.edu.hk/ir/Record/1783.1-110686 https://doi.org/10.1016/j.gca.2021.04.024 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=0016-7037&rft.volume=v. 304&rft.issue=&rft.date=2021&rft.spage=178&rft.aulast=Fang&rft.aufirst=Z.&rft.atitle=Spatial+characteristics+and+removal+of+dissolved+black+carbon+in+the+western+Arctic+Ocean+and+Bering+Sea&rft.title=Geochimica+et+Cosmochimica+Acta http://www.scopus.com/record/display.url?eid=2-s2.0-85105568141&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000655500800010 |
geographic |
Arctic Arctic Ocean Bering Sea Canada Chukchi Sea |
geographic_facet |
Arctic Arctic Ocean Bering Sea Canada Chukchi Sea |
genre |
Arctic Arctic Arctic Ocean Bering Sea black carbon canada basin Chukchi Chukchi Sea Sea ice |
genre_facet |
Arctic Arctic Arctic Ocean Bering Sea black carbon canada basin Chukchi Chukchi Sea Sea ice |
op_relation |
https://repository.hkust.edu.hk/ir/Record/1783.1-110686 Geochimica et Cosmochimica Acta, v. 304, July 2021, p. 178-190 0016-7037 https://doi.org/10.1016/j.gca.2021.04.024 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=0016-7037&rft.volume=v. 304&rft.issue=&rft.date=2021&rft.spage=178&rft.aulast=Fang&rft.aufirst=Z.&rft.atitle=Spatial+characteristics+and+removal+of+dissolved+black+carbon+in+the+western+Arctic+Ocean+and+Bering+Sea&rft.title=Geochimica+et+Cosmochimica+Acta http://www.scopus.com/record/display.url?eid=2-s2.0-85105568141&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000655500800010 |
op_doi |
https://doi.org/10.1016/j.gca.2021.04.024 |
container_title |
Geochimica et Cosmochimica Acta |
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304 |
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178 |
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