The cause of the glacial to interglacial atmospheric CO2 change: A Polar Alkalinity Hypothesis
In an attempt to create a scenario for the cause of the glacial to interglacial CO2 change recorded in air trapped in polar ice, we call on an increase in the alkalinity of polar surface waters. In this way we circumvent a major deficiency of the polar nutrient scenarios of Sarmiento and Toggweiler...
Published in: | Global Biogeochemical Cycles |
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Language: | English |
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AGU (American Geophysical Union)
1989
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ftoceanrep:oai:oceanrep.geomar.de:33097 2023-05-15T17:25:25+02:00 The cause of the glacial to interglacial atmospheric CO2 change: A Polar Alkalinity Hypothesis Broecker, W. S. Peng, T.-H. 1989 text https://oceanrep.geomar.de/id/eprint/33097/ https://oceanrep.geomar.de/id/eprint/33097/1/scan_2016-06-15_14-46-42.1.pdf https://doi.org/10.1029/GB003i003p00215 en eng AGU (American Geophysical Union) https://oceanrep.geomar.de/id/eprint/33097/1/scan_2016-06-15_14-46-42.1.pdf Broecker, W. S. and Peng, T. H. (1989) The cause of the glacial to interglacial atmospheric CO2 change: A Polar Alkalinity Hypothesis. Global Biogeochemical Cycles, 3 (3). pp. 215-239. DOI 10.1029/GB003i003p00215 <https://doi.org/10.1029/GB003i003p00215>. doi:10.1029/GB003i003p00215 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 1989 ftoceanrep https://doi.org/10.1029/GB003i003p00215 2023-04-07T15:26:04Z In an attempt to create a scenario for the cause of the glacial to interglacial CO2 change recorded in air trapped in polar ice, we call on an increase in the alkalinity of polar surface waters. In this way we circumvent a major deficiency of the polar nutrient scenarios of Sarmiento and Toggweiler (1984), Siegenthaler and Wenk (1984) and Knox and McElroy (1984). Namely, our scenario does not require a drop in the nutrient content of polar surface waters in conformity with the demonstration by Boyle (1988a, b) that the cadmium content of planktonic foraminifera from polar regions did not decrease from late glacial to Holocene time. The rise in alkalinity required by our model is a natural consequence of the demise, during glacial time, of North Atlantic Deep Water as a major force in ocean circulation and of the nutrient maximum deepening of Boyle (1988b). Rather than being original, our hypothesis builds on the concept basic to the polar nutrient hypotheses, namely that the CO2 partial pressure in polar waters controls that for both the atmosphere and warm surface ocean. It also requires the alkalinity increase in surface waters produced by Boyle's nutrient deepening. Article in Journal/Newspaper North Atlantic Deep Water North Atlantic Planktonic foraminifera OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Sarmiento ENVELOPE(-68.000,-68.000,-72.000,-72.000) McElroy ENVELOPE(-63.187,-63.187,-74.152,-74.152) Global Biogeochemical Cycles 3 3 215 239 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
In an attempt to create a scenario for the cause of the glacial to interglacial CO2 change recorded in air trapped in polar ice, we call on an increase in the alkalinity of polar surface waters. In this way we circumvent a major deficiency of the polar nutrient scenarios of Sarmiento and Toggweiler (1984), Siegenthaler and Wenk (1984) and Knox and McElroy (1984). Namely, our scenario does not require a drop in the nutrient content of polar surface waters in conformity with the demonstration by Boyle (1988a, b) that the cadmium content of planktonic foraminifera from polar regions did not decrease from late glacial to Holocene time. The rise in alkalinity required by our model is a natural consequence of the demise, during glacial time, of North Atlantic Deep Water as a major force in ocean circulation and of the nutrient maximum deepening of Boyle (1988b). Rather than being original, our hypothesis builds on the concept basic to the polar nutrient hypotheses, namely that the CO2 partial pressure in polar waters controls that for both the atmosphere and warm surface ocean. It also requires the alkalinity increase in surface waters produced by Boyle's nutrient deepening. |
format |
Article in Journal/Newspaper |
author |
Broecker, W. S. Peng, T.-H. |
spellingShingle |
Broecker, W. S. Peng, T.-H. The cause of the glacial to interglacial atmospheric CO2 change: A Polar Alkalinity Hypothesis |
author_facet |
Broecker, W. S. Peng, T.-H. |
author_sort |
Broecker, W. S. |
title |
The cause of the glacial to interglacial atmospheric CO2 change: A Polar Alkalinity Hypothesis |
title_short |
The cause of the glacial to interglacial atmospheric CO2 change: A Polar Alkalinity Hypothesis |
title_full |
The cause of the glacial to interglacial atmospheric CO2 change: A Polar Alkalinity Hypothesis |
title_fullStr |
The cause of the glacial to interglacial atmospheric CO2 change: A Polar Alkalinity Hypothesis |
title_full_unstemmed |
The cause of the glacial to interglacial atmospheric CO2 change: A Polar Alkalinity Hypothesis |
title_sort |
cause of the glacial to interglacial atmospheric co2 change: a polar alkalinity hypothesis |
publisher |
AGU (American Geophysical Union) |
publishDate |
1989 |
url |
https://oceanrep.geomar.de/id/eprint/33097/ https://oceanrep.geomar.de/id/eprint/33097/1/scan_2016-06-15_14-46-42.1.pdf https://doi.org/10.1029/GB003i003p00215 |
long_lat |
ENVELOPE(-68.000,-68.000,-72.000,-72.000) ENVELOPE(-63.187,-63.187,-74.152,-74.152) |
geographic |
Sarmiento McElroy |
geographic_facet |
Sarmiento McElroy |
genre |
North Atlantic Deep Water North Atlantic Planktonic foraminifera |
genre_facet |
North Atlantic Deep Water North Atlantic Planktonic foraminifera |
op_relation |
https://oceanrep.geomar.de/id/eprint/33097/1/scan_2016-06-15_14-46-42.1.pdf Broecker, W. S. and Peng, T. H. (1989) The cause of the glacial to interglacial atmospheric CO2 change: A Polar Alkalinity Hypothesis. Global Biogeochemical Cycles, 3 (3). pp. 215-239. DOI 10.1029/GB003i003p00215 <https://doi.org/10.1029/GB003i003p00215>. doi:10.1029/GB003i003p00215 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1029/GB003i003p00215 |
container_title |
Global Biogeochemical Cycles |
container_volume |
3 |
container_issue |
3 |
container_start_page |
215 |
op_container_end_page |
239 |
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1766116837913788416 |