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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Published in:Climate of the Past
Main Authors: J. Shin, J. Ahn, J. Chowdhry Beeman, H.-G. Lee, J. M. Seo, E. J. Brook
Format: Article in Journal/Newspaper
Language:English
Published: Copernicus Publications 2022
Subjects:
geo
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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spelling 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
institution Open Polar
collection Unknown
op_collection_id fttriple
language English
topic geo
envir
spellingShingle 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
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