Impact of terrestrial biosphere on the atmospheric CO2 concentration across Termination V
Among the 100 kyr climatic cycles of the Late Pleistocene, Termination V (TV, ∼ 433–404 kyr BP), the fifth last deglaciation, stands out for its minimum in astronomical forcing associated paradoxically with maxima in sea level, Antarctic temperature and atmospheric CO2 concentration. However, the dr...
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Copernicus Publications
2022
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00061653 2023-05-15T13:49:21+02:00 Impact of terrestrial biosphere on the atmospheric CO2 concentration across Termination V Hes, Gabriel Sánchez Goñi, María F. Bouttes, Nathaelle 2022-06 electronic https://doi.org/10.5194/cp-18-1429-2022 https://noa.gwlb.de/receive/cop_mods_00061653 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00061081/cp-18-1429-2022.pdf https://cp.copernicus.org/articles/18/1429/2022/cp-18-1429-2022.pdf eng eng Copernicus Publications Climate of the Past -- http://www.copernicus.org/EGU/cp/cp/published_papers.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2217985 -- 1814-9332 https://doi.org/10.5194/cp-18-1429-2022 https://noa.gwlb.de/receive/cop_mods_00061653 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00061081/cp-18-1429-2022.pdf https://cp.copernicus.org/articles/18/1429/2022/cp-18-1429-2022.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2022 ftnonlinearchiv https://doi.org/10.5194/cp-18-1429-2022 2022-07-03T23:11:41Z Among the 100 kyr climatic cycles of the Late Pleistocene, Termination V (TV, ∼ 433–404 kyr BP), the fifth last deglaciation, stands out for its minimum in astronomical forcing associated paradoxically with maxima in sea level, Antarctic temperature and atmospheric CO2 concentration. However, the driving mechanisms explaining TV remain only partially understood. For instance, climate models cannot fully represent the atmospheric CO2 variation observed in paleoclimate data. Aside from essential oceanic circulation processes, there is increasing evidence that terrestrial biosphere may have played a key role in the global carbon cycle. This study proposes a three-step integrated approach, combining regional and global vegetation records with modelling results, to unveil the evolution of terrestrial biosphere and its contribution to the carbon cycle during TV. First, we provide a new high-resolution (∼ 700 years) deep-sea pollen record from the Gulf of Cádiz (site U1386, 36∘49.680′ N; 7∘45.320′ W) for TV, which shows a moderate expansion of the Mediterranean forest. We then construct the first global forest pollen database for this period. Our compilation features distinct evolutions for different types of forest, highlighting a strong development of temperate and boreal forest which might have delayed the atmospheric CO2 increase during TV. Finally, the direct comparison of global simulated forests (iLOVECLIM model) to our pollen database reveals overall consistent temperate and boreal forest evolutions despite model biases, thereby supporting the hypothesis of a significant CO2 sequestration by middle and high-latitude forests of the Northern Hemisphere shortly after the onset of TV. Article in Journal/Newspaper Antarc* Antarctic Niedersächsisches Online-Archiv NOA Antarctic Climate of the Past 18 6 1429 1451 |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Hes, Gabriel Sánchez Goñi, María F. Bouttes, Nathaelle Impact of terrestrial biosphere on the atmospheric CO2 concentration across Termination V |
topic_facet |
article Verlagsveröffentlichung |
description |
Among the 100 kyr climatic cycles of the Late Pleistocene, Termination V (TV, ∼ 433–404 kyr BP), the fifth last deglaciation, stands out for its minimum in astronomical forcing associated paradoxically with maxima in sea level, Antarctic temperature and atmospheric CO2 concentration. However, the driving mechanisms explaining TV remain only partially understood. For instance, climate models cannot fully represent the atmospheric CO2 variation observed in paleoclimate data. Aside from essential oceanic circulation processes, there is increasing evidence that terrestrial biosphere may have played a key role in the global carbon cycle. This study proposes a three-step integrated approach, combining regional and global vegetation records with modelling results, to unveil the evolution of terrestrial biosphere and its contribution to the carbon cycle during TV. First, we provide a new high-resolution (∼ 700 years) deep-sea pollen record from the Gulf of Cádiz (site U1386, 36∘49.680′ N; 7∘45.320′ W) for TV, which shows a moderate expansion of the Mediterranean forest. We then construct the first global forest pollen database for this period. Our compilation features distinct evolutions for different types of forest, highlighting a strong development of temperate and boreal forest which might have delayed the atmospheric CO2 increase during TV. Finally, the direct comparison of global simulated forests (iLOVECLIM model) to our pollen database reveals overall consistent temperate and boreal forest evolutions despite model biases, thereby supporting the hypothesis of a significant CO2 sequestration by middle and high-latitude forests of the Northern Hemisphere shortly after the onset of TV. |
format |
Article in Journal/Newspaper |
author |
Hes, Gabriel Sánchez Goñi, María F. Bouttes, Nathaelle |
author_facet |
Hes, Gabriel Sánchez Goñi, María F. Bouttes, Nathaelle |
author_sort |
Hes, Gabriel |
title |
Impact of terrestrial biosphere on the atmospheric CO2 concentration across Termination V |
title_short |
Impact of terrestrial biosphere on the atmospheric CO2 concentration across Termination V |
title_full |
Impact of terrestrial biosphere on the atmospheric CO2 concentration across Termination V |
title_fullStr |
Impact of terrestrial biosphere on the atmospheric CO2 concentration across Termination V |
title_full_unstemmed |
Impact of terrestrial biosphere on the atmospheric CO2 concentration across Termination V |
title_sort |
impact of terrestrial biosphere on the atmospheric co2 concentration across termination v |
publisher |
Copernicus Publications |
publishDate |
2022 |
url |
https://doi.org/10.5194/cp-18-1429-2022 https://noa.gwlb.de/receive/cop_mods_00061653 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00061081/cp-18-1429-2022.pdf https://cp.copernicus.org/articles/18/1429/2022/cp-18-1429-2022.pdf |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
Climate of the Past -- http://www.copernicus.org/EGU/cp/cp/published_papers.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2217985 -- 1814-9332 https://doi.org/10.5194/cp-18-1429-2022 https://noa.gwlb.de/receive/cop_mods_00061653 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00061081/cp-18-1429-2022.pdf https://cp.copernicus.org/articles/18/1429/2022/cp-18-1429-2022.pdf |
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https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/cp-18-1429-2022 |
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Climate of the Past |
container_volume |
18 |
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6 |
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1429 |
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1451 |
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