Increased fluxes of shelf-derived materials to the central Arctic Ocean
Rising temperatures in the Arctic Ocean region are responsible for changes such as reduced ice cover, permafrost thawing, and increased river discharge, which, together, alter nutrient and carbon cycles over the vast Arctic continental shelf. We show that the concentration of radium-228, sourced to...
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ftosti:oai:osti.gov:1625979 2023-07-30T04:00:21+02:00 Increased fluxes of shelf-derived materials to the central Arctic Ocean Kipp, Lauren E. Charette, Matthew A. Moore, Willard S. Henderson, Paul B. Rigor, Ignatius G. 2023-07-03 application/pdf http://www.osti.gov/servlets/purl/1625979 https://www.osti.gov/biblio/1625979 https://doi.org/10.1126/sciadv.aao1302 unknown http://www.osti.gov/servlets/purl/1625979 https://www.osti.gov/biblio/1625979 https://doi.org/10.1126/sciadv.aao1302 doi:10.1126/sciadv.aao1302 54 ENVIRONMENTAL SCIENCES 2023 ftosti https://doi.org/10.1126/sciadv.aao1302 2023-07-11T09:42:29Z Rising temperatures in the Arctic Ocean region are responsible for changes such as reduced ice cover, permafrost thawing, and increased river discharge, which, together, alter nutrient and carbon cycles over the vast Arctic continental shelf. We show that the concentration of radium-228, sourced to seawater through sediment-water exchange processes, has increased substantially in surface waters of the central Arctic Ocean over the past decade. A mass balance model for 228Ra suggests that this increase is due to an intensification of shelf-derived material inputs to the central basin, a source that would also carry elevated concentrations of dissolved organic carbon and nutrients. Therefore, we suggest that significant changes in the nutrient, carbon, and trace metal balances of the Arctic Ocean are underway, with the potential to affect biological productivity and species assemblages in Arctic surface waters. Other/Unknown Material Arctic Arctic Ocean Ice permafrost SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Arctic Arctic Ocean Central Basin ENVELOPE(43.000,43.000,73.500,73.500) Science Advances 4 1 |
institution |
Open Polar |
collection |
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
ftosti |
language |
unknown |
topic |
54 ENVIRONMENTAL SCIENCES |
spellingShingle |
54 ENVIRONMENTAL SCIENCES Kipp, Lauren E. Charette, Matthew A. Moore, Willard S. Henderson, Paul B. Rigor, Ignatius G. Increased fluxes of shelf-derived materials to the central Arctic Ocean |
topic_facet |
54 ENVIRONMENTAL SCIENCES |
description |
Rising temperatures in the Arctic Ocean region are responsible for changes such as reduced ice cover, permafrost thawing, and increased river discharge, which, together, alter nutrient and carbon cycles over the vast Arctic continental shelf. We show that the concentration of radium-228, sourced to seawater through sediment-water exchange processes, has increased substantially in surface waters of the central Arctic Ocean over the past decade. A mass balance model for 228Ra suggests that this increase is due to an intensification of shelf-derived material inputs to the central basin, a source that would also carry elevated concentrations of dissolved organic carbon and nutrients. Therefore, we suggest that significant changes in the nutrient, carbon, and trace metal balances of the Arctic Ocean are underway, with the potential to affect biological productivity and species assemblages in Arctic surface waters. |
author |
Kipp, Lauren E. Charette, Matthew A. Moore, Willard S. Henderson, Paul B. Rigor, Ignatius G. |
author_facet |
Kipp, Lauren E. Charette, Matthew A. Moore, Willard S. Henderson, Paul B. Rigor, Ignatius G. |
author_sort |
Kipp, Lauren E. |
title |
Increased fluxes of shelf-derived materials to the central Arctic Ocean |
title_short |
Increased fluxes of shelf-derived materials to the central Arctic Ocean |
title_full |
Increased fluxes of shelf-derived materials to the central Arctic Ocean |
title_fullStr |
Increased fluxes of shelf-derived materials to the central Arctic Ocean |
title_full_unstemmed |
Increased fluxes of shelf-derived materials to the central Arctic Ocean |
title_sort |
increased fluxes of shelf-derived materials to the central arctic ocean |
publishDate |
2023 |
url |
http://www.osti.gov/servlets/purl/1625979 https://www.osti.gov/biblio/1625979 https://doi.org/10.1126/sciadv.aao1302 |
long_lat |
ENVELOPE(43.000,43.000,73.500,73.500) |
geographic |
Arctic Arctic Ocean Central Basin |
geographic_facet |
Arctic Arctic Ocean Central Basin |
genre |
Arctic Arctic Ocean Ice permafrost |
genre_facet |
Arctic Arctic Ocean Ice permafrost |
op_relation |
http://www.osti.gov/servlets/purl/1625979 https://www.osti.gov/biblio/1625979 https://doi.org/10.1126/sciadv.aao1302 doi:10.1126/sciadv.aao1302 |
op_doi |
https://doi.org/10.1126/sciadv.aao1302 |
container_title |
Science Advances |
container_volume |
4 |
container_issue |
1 |
_version_ |
1772810858845437952 |