Beryllium 7 measured during POLARSTERN cruise ARK-XXII/2
The natural cosmogenic radionuclide 7Be (T1/2 = 53.4 d) is supplied to the surface ocean from the atmosphere and, in the Arctic Ocean, can be used as a tracer of the efficiency with which sea ice intercepts the atmospheric fluxes of chemical species and of the importance of ice as a transport mechan...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.804443 2023-05-15T14:25:42+02:00 Beryllium 7 measured during POLARSTERN cruise ARK-XXII/2 Cámara-Mor, Patricia Masqué, Pere García-Orellana, Jordi Kern, Stefan Cochran, J Kirk Hanfland, Claudia MEDIAN LATITUDE: 84.159665 * MEDIAN LONGITUDE: 114.680015 * SOUTH-BOUND LATITUDE: 75.201000 * WEST-BOUND LONGITUDE: 33.750000 * NORTH-BOUND LATITUDE: 88.499100 * EAST-BOUND LONGITUDE: -134.970800 * DATE/TIME START: 2007-08-02T20:53:00 * DATE/TIME END: 2007-09-24T00:00:00 2011-12-18 application/zip, 5 datasets https://doi.pangaea.de/10.1594/PANGAEA.804443 https://doi.org/10.1594/PANGAEA.804443 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.804443 https://doi.org/10.1594/PANGAEA.804443 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Cámara-Mor, Patricia; Masqué, Pere; García-Orellana, Jordi; Kern, Stefan; Cochran, J Kirk; Hanfland, Claudia (2011): Interception of atmospheric fluxes by Arctic sea ice: Evidence from cosmogenic 7Be. Journal of Geophysical Research: Oceans, 116, C12041, https://doi.org/10.1029/2010JC006847 Arctic Ocean ARK-XXII/2 CT GEOTRACES Global marine biogeochemical cycles of trace elements and their isotopes Polarstern PS70/2-track PS70 SPACE DAMOCLES Underway cruise track measurements Dataset 2011 ftpangaea https://doi.org/10.1594/PANGAEA.804443 https://doi.org/10.1029/2010JC006847 2023-01-20T07:32:50Z The natural cosmogenic radionuclide 7Be (T1/2 = 53.4 d) is supplied to the surface ocean from the atmosphere and, in the Arctic Ocean, can be used as a tracer of the efficiency with which sea ice intercepts the atmospheric fluxes of chemical species and of the importance of ice as a transport mechanism for particulate matter and chemical species. Analyses of 7Be in samples of surface water, surface sea ice, water beneath the ice, sea ice sediments, and precipitation from the Eurasian Basin of the Arctic Ocean show that the fraction of sea ice coverage determines the amount of 7Be in the surface water. When sea ice coverage is <40%, the 7Be inventory in the upper ocean (130 ± 19 Bq m**-2) is in good agreement with that expected from the inventory from 7Be atmospheric flux (128 ± 21 Bq m**-2). In contrast, when ice coverage is >80%, the water column inventory drops to 58 ± 20 Bq m**-2. The 7Be inventory in sea ice is 39 ± 23 Bq m**-2, and mass balance calculations show that sea ice can intercept 30 ± 18% of the atmospheric flux of 7Be during the studied period. We suggest that other atmospherically transported contaminants should be similarly intercepted. 7Be in the ice also can be used to estimate that the annual transport and release of sediment to the ablation area of the Fram Strait is -500 g m**-2, a value comparable to previously measured fluxes in sediment traps deployed in the area. Dataset Arctic Arctic Arctic Ocean Fram Strait Sea ice PANGAEA - Data Publisher for Earth & Environmental Science Arctic Arctic Ocean Damocles ENVELOPE(-69.350,-69.350,-69.650,-69.650) ENVELOPE(33.750000,-134.970800,88.499100,75.201000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Arctic Ocean ARK-XXII/2 CT GEOTRACES Global marine biogeochemical cycles of trace elements and their isotopes Polarstern PS70/2-track PS70 SPACE DAMOCLES Underway cruise track measurements |
spellingShingle |
Arctic Ocean ARK-XXII/2 CT GEOTRACES Global marine biogeochemical cycles of trace elements and their isotopes Polarstern PS70/2-track PS70 SPACE DAMOCLES Underway cruise track measurements Cámara-Mor, Patricia Masqué, Pere García-Orellana, Jordi Kern, Stefan Cochran, J Kirk Hanfland, Claudia Beryllium 7 measured during POLARSTERN cruise ARK-XXII/2 |
topic_facet |
Arctic Ocean ARK-XXII/2 CT GEOTRACES Global marine biogeochemical cycles of trace elements and their isotopes Polarstern PS70/2-track PS70 SPACE DAMOCLES Underway cruise track measurements |
description |
The natural cosmogenic radionuclide 7Be (T1/2 = 53.4 d) is supplied to the surface ocean from the atmosphere and, in the Arctic Ocean, can be used as a tracer of the efficiency with which sea ice intercepts the atmospheric fluxes of chemical species and of the importance of ice as a transport mechanism for particulate matter and chemical species. Analyses of 7Be in samples of surface water, surface sea ice, water beneath the ice, sea ice sediments, and precipitation from the Eurasian Basin of the Arctic Ocean show that the fraction of sea ice coverage determines the amount of 7Be in the surface water. When sea ice coverage is <40%, the 7Be inventory in the upper ocean (130 ± 19 Bq m**-2) is in good agreement with that expected from the inventory from 7Be atmospheric flux (128 ± 21 Bq m**-2). In contrast, when ice coverage is >80%, the water column inventory drops to 58 ± 20 Bq m**-2. The 7Be inventory in sea ice is 39 ± 23 Bq m**-2, and mass balance calculations show that sea ice can intercept 30 ± 18% of the atmospheric flux of 7Be during the studied period. We suggest that other atmospherically transported contaminants should be similarly intercepted. 7Be in the ice also can be used to estimate that the annual transport and release of sediment to the ablation area of the Fram Strait is -500 g m**-2, a value comparable to previously measured fluxes in sediment traps deployed in the area. |
format |
Dataset |
author |
Cámara-Mor, Patricia Masqué, Pere García-Orellana, Jordi Kern, Stefan Cochran, J Kirk Hanfland, Claudia |
author_facet |
Cámara-Mor, Patricia Masqué, Pere García-Orellana, Jordi Kern, Stefan Cochran, J Kirk Hanfland, Claudia |
author_sort |
Cámara-Mor, Patricia |
title |
Beryllium 7 measured during POLARSTERN cruise ARK-XXII/2 |
title_short |
Beryllium 7 measured during POLARSTERN cruise ARK-XXII/2 |
title_full |
Beryllium 7 measured during POLARSTERN cruise ARK-XXII/2 |
title_fullStr |
Beryllium 7 measured during POLARSTERN cruise ARK-XXII/2 |
title_full_unstemmed |
Beryllium 7 measured during POLARSTERN cruise ARK-XXII/2 |
title_sort |
beryllium 7 measured during polarstern cruise ark-xxii/2 |
publisher |
PANGAEA |
publishDate |
2011 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.804443 https://doi.org/10.1594/PANGAEA.804443 |
op_coverage |
MEDIAN LATITUDE: 84.159665 * MEDIAN LONGITUDE: 114.680015 * SOUTH-BOUND LATITUDE: 75.201000 * WEST-BOUND LONGITUDE: 33.750000 * NORTH-BOUND LATITUDE: 88.499100 * EAST-BOUND LONGITUDE: -134.970800 * DATE/TIME START: 2007-08-02T20:53:00 * DATE/TIME END: 2007-09-24T00:00:00 |
long_lat |
ENVELOPE(-69.350,-69.350,-69.650,-69.650) ENVELOPE(33.750000,-134.970800,88.499100,75.201000) |
geographic |
Arctic Arctic Ocean Damocles |
geographic_facet |
Arctic Arctic Ocean Damocles |
genre |
Arctic Arctic Arctic Ocean Fram Strait Sea ice |
genre_facet |
Arctic Arctic Arctic Ocean Fram Strait Sea ice |
op_source |
Supplement to: Cámara-Mor, Patricia; Masqué, Pere; García-Orellana, Jordi; Kern, Stefan; Cochran, J Kirk; Hanfland, Claudia (2011): Interception of atmospheric fluxes by Arctic sea ice: Evidence from cosmogenic 7Be. Journal of Geophysical Research: Oceans, 116, C12041, https://doi.org/10.1029/2010JC006847 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.804443 https://doi.org/10.1594/PANGAEA.804443 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.804443 https://doi.org/10.1029/2010JC006847 |
_version_ |
1766298156643909632 |