A role for atmospheric CO2 in preindustrial climate forcing
Complementary to measurements in Antarctic ice cores, stomatal frequency analysis of leaves of land plants preserved in peat and lake deposits can provide a proxy record of preindustrial atmospheric CO2 concentration. CO2 trends based on leaf remains of Quercus robur (English oak) from the Netherlan...
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ftpubmed:oai:pubmedcentral.nih.gov:2562417 2023-05-15T13:55:23+02:00 A role for atmospheric CO2 in preindustrial climate forcing van Hoof, Thomas B. Wagner-Cremer, Friederike Kürschner, Wolfram M. Visscher, Henk 2008-10-14 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2562417 http://www.ncbi.nlm.nih.gov/pubmed/18838689 https://doi.org/10.1073/pnas.0807624105 en eng National Academy of Sciences http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2562417 http://www.ncbi.nlm.nih.gov/pubmed/18838689 http://dx.doi.org/10.1073/pnas.0807624105 © 2008 by The National Academy of Sciences of the USA Freely available online through the PNAS open access option. Physical Sciences Text 2008 ftpubmed https://doi.org/10.1073/pnas.0807624105 2013-09-02T06:42:03Z Complementary to measurements in Antarctic ice cores, stomatal frequency analysis of leaves of land plants preserved in peat and lake deposits can provide a proxy record of preindustrial atmospheric CO2 concentration. CO2 trends based on leaf remains of Quercus robur (English oak) from the Netherlands support the presence of significant CO2 variability during the first half of the last millennium. The amplitude of the reconstructed multidecadal fluctuations, up to 34 parts per million by volume, considerably exceeds maximum shifts measured in Antarctic ice. Inferred changes in CO2 radiative forcing are of a magnitude similar to variations ascribed to other mechanisms, particularly solar irradiance and volcanic activity, and may therefore call into question the concept of the Intergovernmental Panel on Climate Change, which assumes an insignificant role of CO2 as a preindustrial climate-forcing factor. The stomata-based CO2 trends correlate with coeval sea-surface temperature trends in the North Atlantic Ocean, suggesting the possibility of an oceanic source/sink mechanism for the recorded CO2 changes. Text Antarc* Antarctic North Atlantic PubMed Central (PMC) Antarctic Proceedings of the National Academy of Sciences 105 41 15815 15818 |
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PubMed Central (PMC) |
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English |
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Physical Sciences |
spellingShingle |
Physical Sciences van Hoof, Thomas B. Wagner-Cremer, Friederike Kürschner, Wolfram M. Visscher, Henk A role for atmospheric CO2 in preindustrial climate forcing |
topic_facet |
Physical Sciences |
description |
Complementary to measurements in Antarctic ice cores, stomatal frequency analysis of leaves of land plants preserved in peat and lake deposits can provide a proxy record of preindustrial atmospheric CO2 concentration. CO2 trends based on leaf remains of Quercus robur (English oak) from the Netherlands support the presence of significant CO2 variability during the first half of the last millennium. The amplitude of the reconstructed multidecadal fluctuations, up to 34 parts per million by volume, considerably exceeds maximum shifts measured in Antarctic ice. Inferred changes in CO2 radiative forcing are of a magnitude similar to variations ascribed to other mechanisms, particularly solar irradiance and volcanic activity, and may therefore call into question the concept of the Intergovernmental Panel on Climate Change, which assumes an insignificant role of CO2 as a preindustrial climate-forcing factor. The stomata-based CO2 trends correlate with coeval sea-surface temperature trends in the North Atlantic Ocean, suggesting the possibility of an oceanic source/sink mechanism for the recorded CO2 changes. |
format |
Text |
author |
van Hoof, Thomas B. Wagner-Cremer, Friederike Kürschner, Wolfram M. Visscher, Henk |
author_facet |
van Hoof, Thomas B. Wagner-Cremer, Friederike Kürschner, Wolfram M. Visscher, Henk |
author_sort |
van Hoof, Thomas B. |
title |
A role for atmospheric CO2 in preindustrial climate forcing |
title_short |
A role for atmospheric CO2 in preindustrial climate forcing |
title_full |
A role for atmospheric CO2 in preindustrial climate forcing |
title_fullStr |
A role for atmospheric CO2 in preindustrial climate forcing |
title_full_unstemmed |
A role for atmospheric CO2 in preindustrial climate forcing |
title_sort |
role for atmospheric co2 in preindustrial climate forcing |
publisher |
National Academy of Sciences |
publishDate |
2008 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2562417 http://www.ncbi.nlm.nih.gov/pubmed/18838689 https://doi.org/10.1073/pnas.0807624105 |
geographic |
Antarctic |
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Antarctic |
genre |
Antarc* Antarctic North Atlantic |
genre_facet |
Antarc* Antarctic North Atlantic |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2562417 http://www.ncbi.nlm.nih.gov/pubmed/18838689 http://dx.doi.org/10.1073/pnas.0807624105 |
op_rights |
© 2008 by The National Academy of Sciences of the USA Freely available online through the PNAS open access option. |
op_doi |
https://doi.org/10.1073/pnas.0807624105 |
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Proceedings of the National Academy of Sciences |
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105 |
container_issue |
41 |
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15815 |
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15818 |
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1766261993819340800 |