The role of CaCO3 compensation in the glacial to interglacial atmospheric CO2 change
The only viable explanations put forth to date for the glacial to interglacial change in atmospheric CO2 content suggested from measurements of the CO2 content of gas extracted from ice cores involve changes in the ocean's nutrient cycles. Any nutrient change capable of creating the 80 µatm cha...
Published in: | Global Biogeochemical Cycles |
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Language: | English |
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AGU (American Geophysical Union)
1987
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Online Access: | https://oceanrep.geomar.de/id/eprint/33102/ https://oceanrep.geomar.de/id/eprint/33102/1/scan_2016-06-15_14-38-10.1.pdf https://doi.org/10.1029/GB001i001p00015 |
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ftoceanrep:oai:oceanrep.geomar.de:33102 2023-05-15T16:38:57+02:00 The role of CaCO3 compensation in the glacial to interglacial atmospheric CO2 change Broecker, W. S. Peng, T.-H. 1987 text https://oceanrep.geomar.de/id/eprint/33102/ https://oceanrep.geomar.de/id/eprint/33102/1/scan_2016-06-15_14-38-10.1.pdf https://doi.org/10.1029/GB001i001p00015 en eng AGU (American Geophysical Union) https://oceanrep.geomar.de/id/eprint/33102/1/scan_2016-06-15_14-38-10.1.pdf Broecker, W. S. and Peng, T. H. (1987) The role of CaCO3 compensation in the glacial to interglacial atmospheric CO2 change. Global Biogeochemical Cycles, 1 (1). pp. 15-29. DOI 10.1029/GB001i001p00015 <https://doi.org/10.1029/GB001i001p00015>. doi:10.1029/GB001i001p00015 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 1987 ftoceanrep https://doi.org/10.1029/GB001i001p00015 2023-04-07T15:26:04Z The only viable explanations put forth to date for the glacial to interglacial change in atmospheric CO2 content suggested from measurements of the CO2 content of gas extracted from ice cores involve changes in the ocean's nutrient cycles. Any nutrient change capable of creating the 80 µatm changes in atmosphere CO2 pressure suggested by the ice core results also creates significant change in the deep ocean's CO3= content. Evidence from deep sea sediments suggests that these CO3= changes are compensated on the time scale of a few thousand years by reductions or increases in amount of CaCO3 accumulating in deep sea sediments. This compensation process has two important consequences. First, it significantly increases the magnitude of the CO2 change per unit of nutrient forcing. Second, it causes a delay in the response of the atmospheric CO2 change. While the first of these consequences is a boon to those seeking to explain the CO2 change, the second may prove to be a curse. The ice core CO2 record shows no evidence of a significant lag between the CO2 response and the polar warming. In any case it is important that we improve our knowledge of the magnitude and timing of the CaCO3 preservation events which mark the close of episodes of glaciation and of the dissolution events which mark the onset of these episodes. Article in Journal/Newspaper ice core OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Global Biogeochemical Cycles 1 1 15 29 |
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Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
The only viable explanations put forth to date for the glacial to interglacial change in atmospheric CO2 content suggested from measurements of the CO2 content of gas extracted from ice cores involve changes in the ocean's nutrient cycles. Any nutrient change capable of creating the 80 µatm changes in atmosphere CO2 pressure suggested by the ice core results also creates significant change in the deep ocean's CO3= content. Evidence from deep sea sediments suggests that these CO3= changes are compensated on the time scale of a few thousand years by reductions or increases in amount of CaCO3 accumulating in deep sea sediments. This compensation process has two important consequences. First, it significantly increases the magnitude of the CO2 change per unit of nutrient forcing. Second, it causes a delay in the response of the atmospheric CO2 change. While the first of these consequences is a boon to those seeking to explain the CO2 change, the second may prove to be a curse. The ice core CO2 record shows no evidence of a significant lag between the CO2 response and the polar warming. In any case it is important that we improve our knowledge of the magnitude and timing of the CaCO3 preservation events which mark the close of episodes of glaciation and of the dissolution events which mark the onset of these episodes. |
format |
Article in Journal/Newspaper |
author |
Broecker, W. S. Peng, T.-H. |
spellingShingle |
Broecker, W. S. Peng, T.-H. The role of CaCO3 compensation in the glacial to interglacial atmospheric CO2 change |
author_facet |
Broecker, W. S. Peng, T.-H. |
author_sort |
Broecker, W. S. |
title |
The role of CaCO3 compensation in the glacial to interglacial atmospheric CO2 change |
title_short |
The role of CaCO3 compensation in the glacial to interglacial atmospheric CO2 change |
title_full |
The role of CaCO3 compensation in the glacial to interglacial atmospheric CO2 change |
title_fullStr |
The role of CaCO3 compensation in the glacial to interglacial atmospheric CO2 change |
title_full_unstemmed |
The role of CaCO3 compensation in the glacial to interglacial atmospheric CO2 change |
title_sort |
role of caco3 compensation in the glacial to interglacial atmospheric co2 change |
publisher |
AGU (American Geophysical Union) |
publishDate |
1987 |
url |
https://oceanrep.geomar.de/id/eprint/33102/ https://oceanrep.geomar.de/id/eprint/33102/1/scan_2016-06-15_14-38-10.1.pdf https://doi.org/10.1029/GB001i001p00015 |
genre |
ice core |
genre_facet |
ice core |
op_relation |
https://oceanrep.geomar.de/id/eprint/33102/1/scan_2016-06-15_14-38-10.1.pdf Broecker, W. S. and Peng, T. H. (1987) The role of CaCO3 compensation in the glacial to interglacial atmospheric CO2 change. Global Biogeochemical Cycles, 1 (1). pp. 15-29. DOI 10.1029/GB001i001p00015 <https://doi.org/10.1029/GB001i001p00015>. doi:10.1029/GB001i001p00015 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1029/GB001i001p00015 |
container_title |
Global Biogeochemical Cycles |
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1 |
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15 |
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29 |
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1766029305067864064 |