Radium inputs into the Arctic Ocean from rivers: a basin-wide estimate
Radium isotopes have been used to trace nutrient, carbon, and trace metal fluxes inputs from ocean margins. However, these approaches require a full accounting of radium sources to the coastal ocean including rivers. Here, we aim to quantify river radium inputs into the Arctic Ocean for the first ti...
Published in: | Journal of Geophysical Research: Oceans |
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Language: | English |
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American Geophysical Union
2022
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Online Access: | https://nrl.northumbria.ac.uk/id/eprint/50000/ https://doi.org/10.1029/2022JC018964 https://nrl.northumbria.ac.uk/id/eprint/50000/9/JGR%20Oceans%20-%202022%20-%20Bullock%20-%20Radium%20Inputs%20Into%20the%20Arctic%20Ocean%20From%20Rivers%20%20A%20Basin%E2%80%90Wide%20Estimate.pdf https://nrl.northumbria.ac.uk/id/eprint/50000/1/937430_1_merged_1660833012.pdf |
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ftunivnorthumb:oai:nrl.northumbria.ac.uk:50000 2023-05-15T14:27:32+02:00 Radium inputs into the Arctic Ocean from rivers: a basin-wide estimate Bullock, Emma J. Kipp, Lauren Moore, Willard Brown, Kristina Brown Mann, Paul Vonk, Jorien E. Zimov, Nikita Charette, Matthew A. 2022-09-01 text https://nrl.northumbria.ac.uk/id/eprint/50000/ https://doi.org/10.1029/2022JC018964 https://nrl.northumbria.ac.uk/id/eprint/50000/9/JGR%20Oceans%20-%202022%20-%20Bullock%20-%20Radium%20Inputs%20Into%20the%20Arctic%20Ocean%20From%20Rivers%20%20A%20Basin%E2%80%90Wide%20Estimate.pdf https://nrl.northumbria.ac.uk/id/eprint/50000/1/937430_1_merged_1660833012.pdf en eng American Geophysical Union https://nrl.northumbria.ac.uk/id/eprint/50000/9/JGR%20Oceans%20-%202022%20-%20Bullock%20-%20Radium%20Inputs%20Into%20the%20Arctic%20Ocean%20From%20Rivers%20%20A%20Basin%E2%80%90Wide%20Estimate.pdf https://nrl.northumbria.ac.uk/id/eprint/50000/1/937430_1_merged_1660833012.pdf Bullock, Emma J., Kipp, Lauren, Moore, Willard, Brown, Kristina Brown, Mann, Paul, Vonk, Jorien E., Zimov, Nikita and Charette, Matthew A. (2022) Radium inputs into the Arctic Ocean from rivers: a basin-wide estimate. Journal of Geophysical Research: Biogeosciences, 127 (9). e2022JC018964. ISSN 2169-8953 cc_by_nc_4_0 CC-BY-NC F700 Ocean Sciences Article PeerReviewed 2022 ftunivnorthumb https://doi.org/10.1029/2022JC018964 2022-09-25T06:16:06Z Radium isotopes have been used to trace nutrient, carbon, and trace metal fluxes inputs from ocean margins. However, these approaches require a full accounting of radium sources to the coastal ocean including rivers. Here, we aim to quantify river radium inputs into the Arctic Ocean for the first time for 226Ra and to refine the estimates for 228Ra. Using new and existing data, we find that the estimated combined (dissolved plus desorbed) annual 226Ra and 228Ra fluxes to the Arctic Ocean are 7.0 – 9.4 x 1014 dpm y-1 and 15-18 x 1014 dpm y-1, respectively. Of these totals, 44% and 60% of the river 226Ra and 228Ra, respectively are from suspended sediment desorption, which were estimated from laboratory incubation experiments. Using Ra isotope data from 20 major rivers around the world, we derived global annual 226Ra and 228Ra fluxes of 7.4 – 17 x 1015 and 15 – 27 x 1015 dpm y-1, respectively. As climate change spurs rapid Arctic warming, hydrological cycles are intensifying and coastal ice cover and permafrost are diminishing. These river radium inputs to the Arctic Ocean will serve as a valuable baseline as we attempt to understand the changes that warming temperatures are having on fluxes of biogeochemically important elements to the Arctic coastal zone. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Climate change Ice permafrost Northumbria University, Newcastle: Northumbria Research Link (NRL) Arctic Arctic Ocean Journal of Geophysical Research: Oceans 127 9 |
institution |
Open Polar |
collection |
Northumbria University, Newcastle: Northumbria Research Link (NRL) |
op_collection_id |
ftunivnorthumb |
language |
English |
topic |
F700 Ocean Sciences |
spellingShingle |
F700 Ocean Sciences Bullock, Emma J. Kipp, Lauren Moore, Willard Brown, Kristina Brown Mann, Paul Vonk, Jorien E. Zimov, Nikita Charette, Matthew A. Radium inputs into the Arctic Ocean from rivers: a basin-wide estimate |
topic_facet |
F700 Ocean Sciences |
description |
Radium isotopes have been used to trace nutrient, carbon, and trace metal fluxes inputs from ocean margins. However, these approaches require a full accounting of radium sources to the coastal ocean including rivers. Here, we aim to quantify river radium inputs into the Arctic Ocean for the first time for 226Ra and to refine the estimates for 228Ra. Using new and existing data, we find that the estimated combined (dissolved plus desorbed) annual 226Ra and 228Ra fluxes to the Arctic Ocean are 7.0 – 9.4 x 1014 dpm y-1 and 15-18 x 1014 dpm y-1, respectively. Of these totals, 44% and 60% of the river 226Ra and 228Ra, respectively are from suspended sediment desorption, which were estimated from laboratory incubation experiments. Using Ra isotope data from 20 major rivers around the world, we derived global annual 226Ra and 228Ra fluxes of 7.4 – 17 x 1015 and 15 – 27 x 1015 dpm y-1, respectively. As climate change spurs rapid Arctic warming, hydrological cycles are intensifying and coastal ice cover and permafrost are diminishing. These river radium inputs to the Arctic Ocean will serve as a valuable baseline as we attempt to understand the changes that warming temperatures are having on fluxes of biogeochemically important elements to the Arctic coastal zone. |
format |
Article in Journal/Newspaper |
author |
Bullock, Emma J. Kipp, Lauren Moore, Willard Brown, Kristina Brown Mann, Paul Vonk, Jorien E. Zimov, Nikita Charette, Matthew A. |
author_facet |
Bullock, Emma J. Kipp, Lauren Moore, Willard Brown, Kristina Brown Mann, Paul Vonk, Jorien E. Zimov, Nikita Charette, Matthew A. |
author_sort |
Bullock, Emma J. |
title |
Radium inputs into the Arctic Ocean from rivers: a basin-wide estimate |
title_short |
Radium inputs into the Arctic Ocean from rivers: a basin-wide estimate |
title_full |
Radium inputs into the Arctic Ocean from rivers: a basin-wide estimate |
title_fullStr |
Radium inputs into the Arctic Ocean from rivers: a basin-wide estimate |
title_full_unstemmed |
Radium inputs into the Arctic Ocean from rivers: a basin-wide estimate |
title_sort |
radium inputs into the arctic ocean from rivers: a basin-wide estimate |
publisher |
American Geophysical Union |
publishDate |
2022 |
url |
https://nrl.northumbria.ac.uk/id/eprint/50000/ https://doi.org/10.1029/2022JC018964 https://nrl.northumbria.ac.uk/id/eprint/50000/9/JGR%20Oceans%20-%202022%20-%20Bullock%20-%20Radium%20Inputs%20Into%20the%20Arctic%20Ocean%20From%20Rivers%20%20A%20Basin%E2%80%90Wide%20Estimate.pdf https://nrl.northumbria.ac.uk/id/eprint/50000/1/937430_1_merged_1660833012.pdf |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Arctic Ocean Climate change Ice permafrost |
genre_facet |
Arctic Arctic Arctic Ocean Climate change Ice permafrost |
op_relation |
https://nrl.northumbria.ac.uk/id/eprint/50000/9/JGR%20Oceans%20-%202022%20-%20Bullock%20-%20Radium%20Inputs%20Into%20the%20Arctic%20Ocean%20From%20Rivers%20%20A%20Basin%E2%80%90Wide%20Estimate.pdf https://nrl.northumbria.ac.uk/id/eprint/50000/1/937430_1_merged_1660833012.pdf Bullock, Emma J., Kipp, Lauren, Moore, Willard, Brown, Kristina Brown, Mann, Paul, Vonk, Jorien E., Zimov, Nikita and Charette, Matthew A. (2022) Radium inputs into the Arctic Ocean from rivers: a basin-wide estimate. Journal of Geophysical Research: Biogeosciences, 127 (9). e2022JC018964. ISSN 2169-8953 |
op_rights |
cc_by_nc_4_0 |
op_rightsnorm |
CC-BY-NC |
op_doi |
https://doi.org/10.1029/2022JC018964 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
127 |
container_issue |
9 |
_version_ |
1766301312910098432 |