Millennial variations in atmospheric CO2 during the early Holocene (11.7–7.4 ka)
We present a new high-resolution record of atmospheric CO2 from the Siple Dome ice core, Antarctica, over the early Holocene (11.7–7.4 ka) that quantifies natural CO2 variability on millennial timescales under interglacial climate conditions. Atmospheric CO2 decreased by ∼10 ppm between 11.3 and 7.3...
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Copernicus Publications
2022
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Online Access: | https://doi.org/10.5194/cp-18-2063-2022 https://cp.copernicus.org/articles/18/2063/2022/cp-18-2063-2022.pdf https://doaj.org/article/033e89919070428da3887f4286f127f3 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:033e89919070428da3887f4286f127f3 2023-05-15T13:53:01+02:00 Millennial variations in atmospheric CO2 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 2022-09-01 https://doi.org/10.5194/cp-18-2063-2022 https://cp.copernicus.org/articles/18/2063/2022/cp-18-2063-2022.pdf https://doaj.org/article/033e89919070428da3887f4286f127f3 en eng Copernicus Publications doi:10.5194/cp-18-2063-2022 1814-9324 1814-9332 https://cp.copernicus.org/articles/18/2063/2022/cp-18-2063-2022.pdf https://doaj.org/article/033e89919070428da3887f4286f127f3 undefined Climate of the Past, Vol 18, Pp 2063-2075 (2022) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2022 fttriple https://doi.org/10.5194/cp-18-2063-2022 2023-01-22T19:11:33Z We present a new high-resolution record of atmospheric CO2 from the Siple Dome ice core, Antarctica, over the early Holocene (11.7–7.4 ka) that quantifies natural CO2 variability on millennial timescales under interglacial climate conditions. Atmospheric CO2 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 CO2 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 Unknown 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 |
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geo envir J. Shin J. Ahn J. Chowdhry Beeman H.-G. Lee J. M. Seo E. J. Brook Millennial variations in atmospheric CO2 during the early Holocene (11.7–7.4 ka) |
topic_facet |
geo envir |
description |
We present a new high-resolution record of atmospheric CO2 from the Siple Dome ice core, Antarctica, over the early Holocene (11.7–7.4 ka) that quantifies natural CO2 variability on millennial timescales under interglacial climate conditions. Atmospheric CO2 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 CO2 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 CO2 during the early Holocene (11.7–7.4 ka) |
title_short |
Millennial variations in atmospheric CO2 during the early Holocene (11.7–7.4 ka) |
title_full |
Millennial variations in atmospheric CO2 during the early Holocene (11.7–7.4 ka) |
title_fullStr |
Millennial variations in atmospheric CO2 during the early Holocene (11.7–7.4 ka) |
title_full_unstemmed |
Millennial variations in atmospheric CO2 during the early Holocene (11.7–7.4 ka) |
title_sort |
millennial variations in atmospheric co2 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://cp.copernicus.org/articles/18/2063/2022/cp-18-2063-2022.pdf 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 |
doi:10.5194/cp-18-2063-2022 1814-9324 1814-9332 https://cp.copernicus.org/articles/18/2063/2022/cp-18-2063-2022.pdf https://doaj.org/article/033e89919070428da3887f4286f127f3 |
op_rights |
undefined |
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 |
_version_ |
1766257979866218496 |