Millennial variations in atmospheric CO 2 during the early Holocene (11.7–7.4 ka)
International audience We present a new high-resolution record of atmospheric CO 2 from the Siple Dome ice core, Antarctica, over the early Holocene (11.7-7.4 ka) that quantifies natural CO 2 variability on millennial timescales under interglacial climate conditions. Atmospheric CO 2 decreased by ∼...
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Online Access: | https://hal.science/hal-03776661 https://hal.science/hal-03776661/document https://hal.science/hal-03776661/file/cp-18-2063-2022.pdf https://doi.org/10.5194/cp-18-2063-2022 |
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ftinsu:oai:HAL:hal-03776661v1 2024-04-28T07:59:13+00:00 Millennial variations in atmospheric CO 2 during the early Holocene (11.7–7.4 ka) Shin, Jinhwa Ahn, Jinho Chowdhry Beeman, Jai Lee, Hun-Gyu Seo, Jaemyeong Mango Brook, Edward Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) 2022-09-06 https://hal.science/hal-03776661 https://hal.science/hal-03776661/document https://hal.science/hal-03776661/file/cp-18-2063-2022.pdf https://doi.org/10.5194/cp-18-2063-2022 en eng HAL CCSD European Geosciences Union (EGU) info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-18-2063-2022 hal-03776661 https://hal.science/hal-03776661 https://hal.science/hal-03776661/document https://hal.science/hal-03776661/file/cp-18-2063-2022.pdf doi:10.5194/cp-18-2063-2022 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal.science/hal-03776661 Climate of the Past, 2022, 18 (9), pp.2063 - 2075. ⟨10.5194/cp-18-2063-2022⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 2022 ftinsu https://doi.org/10.5194/cp-18-2063-2022 2024-04-05T00:31:43Z International audience We present a new high-resolution record of atmospheric CO 2 from the Siple Dome ice core, Antarctica, over the early Holocene (11.7-7.4 ka) that quantifies natural CO 2 variability on millennial timescales under interglacial climate conditions. Atmospheric CO 2 decreased by ∼ 10 ppm between 11.3 and 7.3 ka. The decrease was punctuated by local minima at 11.1, 10.1, 9.1, and 8.3 ka with an amplitude of 2-4 ppm. Although the explanations of carbon cycle mechanisms remain uncertain due to insufficient paleoclimate records and model simulations, these variations correlate with proxies for solar forcing and local climate in the southeast Atlantic polar front, eastern equatorial Pacific, and North Atlantic. Additional CO 2 measurements using betterquality ice cores and carbon cycle models are needed to confirm the observation. Article in Journal/Newspaper Antarc* Antarctica ice core North Atlantic Institut national des sciences de l'Univers: HAL-INSU Climate of the Past 18 9 2063 2075 |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Shin, Jinhwa Ahn, Jinho Chowdhry Beeman, Jai Lee, Hun-Gyu Seo, Jaemyeong Mango Brook, Edward Millennial variations in atmospheric CO 2 during the early Holocene (11.7–7.4 ka) |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience We present a new high-resolution record of atmospheric CO 2 from the Siple Dome ice core, Antarctica, over the early Holocene (11.7-7.4 ka) that quantifies natural CO 2 variability on millennial timescales under interglacial climate conditions. Atmospheric CO 2 decreased by ∼ 10 ppm between 11.3 and 7.3 ka. The decrease was punctuated by local minima at 11.1, 10.1, 9.1, and 8.3 ka with an amplitude of 2-4 ppm. Although the explanations of carbon cycle mechanisms remain uncertain due to insufficient paleoclimate records and model simulations, these variations correlate with proxies for solar forcing and local climate in the southeast Atlantic polar front, eastern equatorial Pacific, and North Atlantic. Additional CO 2 measurements using betterquality ice cores and carbon cycle models are needed to confirm the observation. |
author2 |
Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) |
format |
Article in Journal/Newspaper |
author |
Shin, Jinhwa Ahn, Jinho Chowdhry Beeman, Jai Lee, Hun-Gyu Seo, Jaemyeong Mango Brook, Edward |
author_facet |
Shin, Jinhwa Ahn, Jinho Chowdhry Beeman, Jai Lee, Hun-Gyu Seo, Jaemyeong Mango Brook, Edward |
author_sort |
Shin, Jinhwa |
title |
Millennial variations in atmospheric CO 2 during the early Holocene (11.7–7.4 ka) |
title_short |
Millennial variations in atmospheric CO 2 during the early Holocene (11.7–7.4 ka) |
title_full |
Millennial variations in atmospheric CO 2 during the early Holocene (11.7–7.4 ka) |
title_fullStr |
Millennial variations in atmospheric CO 2 during the early Holocene (11.7–7.4 ka) |
title_full_unstemmed |
Millennial variations in atmospheric CO 2 during the early Holocene (11.7–7.4 ka) |
title_sort |
millennial variations in atmospheric co 2 during the early holocene (11.7–7.4 ka) |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.science/hal-03776661 https://hal.science/hal-03776661/document https://hal.science/hal-03776661/file/cp-18-2063-2022.pdf https://doi.org/10.5194/cp-18-2063-2022 |
genre |
Antarc* Antarctica ice core North Atlantic |
genre_facet |
Antarc* Antarctica ice core North Atlantic |
op_source |
ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal.science/hal-03776661 Climate of the Past, 2022, 18 (9), pp.2063 - 2075. ⟨10.5194/cp-18-2063-2022⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-18-2063-2022 hal-03776661 https://hal.science/hal-03776661 https://hal.science/hal-03776661/document https://hal.science/hal-03776661/file/cp-18-2063-2022.pdf doi:10.5194/cp-18-2063-2022 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/cp-18-2063-2022 |
container_title |
Climate of the Past |
container_volume |
18 |
container_issue |
9 |
container_start_page |
2063 |
op_container_end_page |
2075 |
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1797572070736920576 |