Millennial variations in atmospheric CO 2 during the early Holocene (11.7–7.4 ka)
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...
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Online Access: | https://doi.org/10.5194/cp-18-2063-2022 https://doaj.org/article/033e89919070428da3887f4286f127f3 |
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ftdoajarticles:oai:doaj.org/article:033e89919070428da3887f4286f127f3 2023-05-15T13:32:13+02:00 Millennial variations in atmospheric CO 2 during the early Holocene (11.7–7.4 ka) J. Shin J. Ahn J. Chowdhry Beeman H.-G. Lee J. M. Seo E. J. Brook 2022-09-01T00:00:00Z https://doi.org/10.5194/cp-18-2063-2022 https://doaj.org/article/033e89919070428da3887f4286f127f3 EN eng Copernicus Publications https://cp.copernicus.org/articles/18/2063/2022/cp-18-2063-2022.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 doi:10.5194/cp-18-2063-2022 1814-9324 1814-9332 https://doaj.org/article/033e89919070428da3887f4286f127f3 Climate of the Past, Vol 18, Pp 2063-2075 (2022) Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 article 2022 ftdoajarticles https://doi.org/10.5194/cp-18-2063-2022 2022-12-30T19:54:37Z 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 better-quality ice cores and carbon cycle models are needed to confirm the observation. Article in Journal/Newspaper Antarc* Antarctica ice core North Atlantic Directory of Open Access Journals: DOAJ Articles Pacific Siple ENVELOPE(-83.917,-83.917,-75.917,-75.917) Siple Dome ENVELOPE(-148.833,-148.833,-81.667,-81.667) Climate of the Past 18 9 2063 2075 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
spellingShingle |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 J. Shin J. Ahn J. Chowdhry Beeman H.-G. Lee J. M. Seo E. J. Brook Millennial variations in atmospheric CO 2 during the early Holocene (11.7–7.4 ka) |
topic_facet |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
description |
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 better-quality ice cores and carbon cycle models are needed to confirm the observation. |
format |
Article in Journal/Newspaper |
author |
J. Shin J. Ahn J. Chowdhry Beeman H.-G. Lee J. M. Seo E. J. Brook |
author_facet |
J. Shin J. Ahn J. Chowdhry Beeman H.-G. Lee J. M. Seo E. J. Brook |
author_sort |
J. Shin |
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 |
Copernicus Publications |
publishDate |
2022 |
url |
https://doi.org/10.5194/cp-18-2063-2022 https://doaj.org/article/033e89919070428da3887f4286f127f3 |
long_lat |
ENVELOPE(-83.917,-83.917,-75.917,-75.917) ENVELOPE(-148.833,-148.833,-81.667,-81.667) |
geographic |
Pacific Siple Siple Dome |
geographic_facet |
Pacific Siple Siple Dome |
genre |
Antarc* Antarctica ice core North Atlantic |
genre_facet |
Antarc* Antarctica ice core North Atlantic |
op_source |
Climate of the Past, Vol 18, Pp 2063-2075 (2022) |
op_relation |
https://cp.copernicus.org/articles/18/2063/2022/cp-18-2063-2022.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 doi:10.5194/cp-18-2063-2022 1814-9324 1814-9332 https://doaj.org/article/033e89919070428da3887f4286f127f3 |
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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1766025140889452544 |