Changes in the carbon cycle during the last deglaciation as indicated by the comparison of Be-10 and C-14 records
The variations in atmospheric radiocarbon (C-14) concentration during the last 50 000 years can be attributed to changes in the C-14 production rate (due to changes in solar activity, the geomagnetic field and/or interstellar galactic cosmic ray flux) and to changes in the global carbon cycle. The r...
Published in: | Earth and Planetary Science Letters |
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Online Access: | https://lup.lub.lu.se/record/284907 https://doi.org/10.1016/S0012-821X(03)00722-2 |
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ftulundlup:oai:lup.lub.lu.se:629f4bcf-e3b1-42b5-a43c-4a543abf8cee 2023-05-15T16:29:36+02:00 Changes in the carbon cycle during the last deglaciation as indicated by the comparison of Be-10 and C-14 records Muscheler, Raimund Beer, Jürg Wagner, Gerhard Laj, Carlo Kissel, Catherine Raisbeck, Grant M Yiou, Francoise Kubik, Peter W 2004 https://lup.lub.lu.se/record/284907 https://doi.org/10.1016/S0012-821X(03)00722-2 eng eng Elsevier https://lup.lub.lu.se/record/284907 http://dx.doi.org/10.1016/S0012-821X(03)00722-2 wos:000220146500012 scopus:1542750030 Earth and Planetary Science Letters; 219(3-4), pp 325-340 (2004) ISSN: 1385-013X Geology paleomagnetism cosmogenic radionuclides carbon cycle ocean circulation ice cores contributiontojournal/article info:eu-repo/semantics/article text 2004 ftulundlup https://doi.org/10.1016/S0012-821X(03)00722-2 2023-02-01T23:28:46Z The variations in atmospheric radiocarbon (C-14) concentration during the last 50 000 years can be attributed to changes in the C-14 production rate (due to changes in solar activity, the geomagnetic field and/or interstellar galactic cosmic ray flux) and to changes in the global carbon cycle. The relative contributions of these processes is the subject of current debate. Although the discrepancies between the various reconstructions of the past atmospheric radiocarbon concentration increase with age, the relatively good agreement over the last 25 000 years allows a quantitative discussion of the causes of the observed C-14 variations for this period. Using Be-10 measurements from Greenland Summit ice cores, we show that, in addition to solar and geomagnetically induced production rate changes, significant changes in the carbon cycle have to be considered to explain the measured C-14 concentrations. There is evidence that these changes are connected to: (1) global deglaciation and (2) climate changes in the North Atlantic region on centennial to millennial time scales related to changes in the ocean circulation. Differences between Be-10 and geomagnetic field records, however, suggest that uncertainties of about 20% still exist in determinations of past changes in the C-14 production rate. (C) 2004 Elsevier B.V. All rights reserved. Article in Journal/Newspaper Greenland North Atlantic Lund University Publications (LUP) Greenland Earth and Planetary Science Letters 219 3-4 325 340 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Geology paleomagnetism cosmogenic radionuclides carbon cycle ocean circulation ice cores |
spellingShingle |
Geology paleomagnetism cosmogenic radionuclides carbon cycle ocean circulation ice cores Muscheler, Raimund Beer, Jürg Wagner, Gerhard Laj, Carlo Kissel, Catherine Raisbeck, Grant M Yiou, Francoise Kubik, Peter W Changes in the carbon cycle during the last deglaciation as indicated by the comparison of Be-10 and C-14 records |
topic_facet |
Geology paleomagnetism cosmogenic radionuclides carbon cycle ocean circulation ice cores |
description |
The variations in atmospheric radiocarbon (C-14) concentration during the last 50 000 years can be attributed to changes in the C-14 production rate (due to changes in solar activity, the geomagnetic field and/or interstellar galactic cosmic ray flux) and to changes in the global carbon cycle. The relative contributions of these processes is the subject of current debate. Although the discrepancies between the various reconstructions of the past atmospheric radiocarbon concentration increase with age, the relatively good agreement over the last 25 000 years allows a quantitative discussion of the causes of the observed C-14 variations for this period. Using Be-10 measurements from Greenland Summit ice cores, we show that, in addition to solar and geomagnetically induced production rate changes, significant changes in the carbon cycle have to be considered to explain the measured C-14 concentrations. There is evidence that these changes are connected to: (1) global deglaciation and (2) climate changes in the North Atlantic region on centennial to millennial time scales related to changes in the ocean circulation. Differences between Be-10 and geomagnetic field records, however, suggest that uncertainties of about 20% still exist in determinations of past changes in the C-14 production rate. (C) 2004 Elsevier B.V. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Muscheler, Raimund Beer, Jürg Wagner, Gerhard Laj, Carlo Kissel, Catherine Raisbeck, Grant M Yiou, Francoise Kubik, Peter W |
author_facet |
Muscheler, Raimund Beer, Jürg Wagner, Gerhard Laj, Carlo Kissel, Catherine Raisbeck, Grant M Yiou, Francoise Kubik, Peter W |
author_sort |
Muscheler, Raimund |
title |
Changes in the carbon cycle during the last deglaciation as indicated by the comparison of Be-10 and C-14 records |
title_short |
Changes in the carbon cycle during the last deglaciation as indicated by the comparison of Be-10 and C-14 records |
title_full |
Changes in the carbon cycle during the last deglaciation as indicated by the comparison of Be-10 and C-14 records |
title_fullStr |
Changes in the carbon cycle during the last deglaciation as indicated by the comparison of Be-10 and C-14 records |
title_full_unstemmed |
Changes in the carbon cycle during the last deglaciation as indicated by the comparison of Be-10 and C-14 records |
title_sort |
changes in the carbon cycle during the last deglaciation as indicated by the comparison of be-10 and c-14 records |
publisher |
Elsevier |
publishDate |
2004 |
url |
https://lup.lub.lu.se/record/284907 https://doi.org/10.1016/S0012-821X(03)00722-2 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland North Atlantic |
genre_facet |
Greenland North Atlantic |
op_source |
Earth and Planetary Science Letters; 219(3-4), pp 325-340 (2004) ISSN: 1385-013X |
op_relation |
https://lup.lub.lu.se/record/284907 http://dx.doi.org/10.1016/S0012-821X(03)00722-2 wos:000220146500012 scopus:1542750030 |
op_doi |
https://doi.org/10.1016/S0012-821X(03)00722-2 |
container_title |
Earth and Planetary Science Letters |
container_volume |
219 |
container_issue |
3-4 |
container_start_page |
325 |
op_container_end_page |
340 |
_version_ |
1766019314546114560 |