Rapid atmospheric CO2 changes associated with the 8,200-years-B.P. cooling event
By applying the inverse relation between numbers of leaf stomata and atmospheric CO2 concentration, stomatal frequency analysis of fossil birch leaves from lake deposits in Denmark reveals a century-scale CO2 change during the prominent Holocene cooling event that occurred in the North Atlantic regi...
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ftpubmed:oai:pubmedcentral.nih.gov:129389 2023-05-15T13:35:47+02:00 Rapid atmospheric CO2 changes associated with the 8,200-years-B.P. cooling event Wagner, Friederike Aaby, Bent Visscher, Henk 2002-09-17 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC129389 http://www.ncbi.nlm.nih.gov/pubmed/12202744 https://doi.org/10.1073/pnas.182420699 en eng National Academy of Sciences http://www.ncbi.nlm.nih.gov/pmc/articles/PMC129389 http://www.ncbi.nlm.nih.gov/pubmed/12202744 http://dx.doi.org/10.1073/pnas.182420699 Copyright © 2002, The National Academy of Sciences Physical Sciences Text 2002 ftpubmed https://doi.org/10.1073/pnas.182420699 2013-08-29T11:03:00Z By applying the inverse relation between numbers of leaf stomata and atmospheric CO2 concentration, stomatal frequency analysis of fossil birch leaves from lake deposits in Denmark reveals a century-scale CO2 change during the prominent Holocene cooling event that occurred in the North Atlantic region between 8,400 and 8,100 years B.P. In contrast to conventional CO2 reconstructions based on ice cores from Antarctica, quantification of the stomatal frequency signal corroborates a distinctive temperature–CO2 correlation. Results indicate a global CO2 decline of ≈25 ppm by volume over ≈300 years. This reduction is in harmony with observed and modeled lowering of North Atlantic sea-surface temperatures associated with a short-term weakening of thermohaline circulation. Text Antarc* Antarctica North Atlantic PubMed Central (PMC) Proceedings of the National Academy of Sciences 99 19 12011 12014 |
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English |
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Physical Sciences |
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Physical Sciences Wagner, Friederike Aaby, Bent Visscher, Henk Rapid atmospheric CO2 changes associated with the 8,200-years-B.P. cooling event |
topic_facet |
Physical Sciences |
description |
By applying the inverse relation between numbers of leaf stomata and atmospheric CO2 concentration, stomatal frequency analysis of fossil birch leaves from lake deposits in Denmark reveals a century-scale CO2 change during the prominent Holocene cooling event that occurred in the North Atlantic region between 8,400 and 8,100 years B.P. In contrast to conventional CO2 reconstructions based on ice cores from Antarctica, quantification of the stomatal frequency signal corroborates a distinctive temperature–CO2 correlation. Results indicate a global CO2 decline of ≈25 ppm by volume over ≈300 years. This reduction is in harmony with observed and modeled lowering of North Atlantic sea-surface temperatures associated with a short-term weakening of thermohaline circulation. |
format |
Text |
author |
Wagner, Friederike Aaby, Bent Visscher, Henk |
author_facet |
Wagner, Friederike Aaby, Bent Visscher, Henk |
author_sort |
Wagner, Friederike |
title |
Rapid atmospheric CO2 changes associated with the 8,200-years-B.P. cooling event |
title_short |
Rapid atmospheric CO2 changes associated with the 8,200-years-B.P. cooling event |
title_full |
Rapid atmospheric CO2 changes associated with the 8,200-years-B.P. cooling event |
title_fullStr |
Rapid atmospheric CO2 changes associated with the 8,200-years-B.P. cooling event |
title_full_unstemmed |
Rapid atmospheric CO2 changes associated with the 8,200-years-B.P. cooling event |
title_sort |
rapid atmospheric co2 changes associated with the 8,200-years-b.p. cooling event |
publisher |
National Academy of Sciences |
publishDate |
2002 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC129389 http://www.ncbi.nlm.nih.gov/pubmed/12202744 https://doi.org/10.1073/pnas.182420699 |
genre |
Antarc* Antarctica North Atlantic |
genre_facet |
Antarc* Antarctica North Atlantic |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC129389 http://www.ncbi.nlm.nih.gov/pubmed/12202744 http://dx.doi.org/10.1073/pnas.182420699 |
op_rights |
Copyright © 2002, The National Academy of Sciences |
op_doi |
https://doi.org/10.1073/pnas.182420699 |
container_title |
Proceedings of the National Academy of Sciences |
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99 |
container_issue |
19 |
container_start_page |
12011 |
op_container_end_page |
12014 |
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1766070199921934336 |