Millennial variations in atmospheric CO2 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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ftcopernicus:oai:publications.copernicus.org:cp97020 2023-05-15T13:38:41+02:00 Millennial variations in atmospheric CO2 during the early Holocene (11.7–7.4 ka) Shin, Jinhwa Ahn, Jinho Chowdhry Beeman, Jai Lee, Hun-Gyu Seo, Jaemyeong Mango Brook, Edward J. 2022-09-06 application/pdf https://doi.org/10.5194/cp-18-2063-2022 https://cp.copernicus.org/articles/18/2063/2022/ eng eng doi:10.5194/cp-18-2063-2022 https://cp.copernicus.org/articles/18/2063/2022/ eISSN: 1814-9332 Text 2022 ftcopernicus https://doi.org/10.5194/cp-18-2063-2022 2022-09-12T16:22:55Z 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. Text Antarc* Antarctica ice core North Atlantic Copernicus Publications: E-Journals 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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Open Polar |
collection |
Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
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 |
Text |
author |
Shin, Jinhwa Ahn, Jinho Chowdhry Beeman, Jai Lee, Hun-Gyu Seo, Jaemyeong Mango Brook, Edward J. |
spellingShingle |
Shin, Jinhwa Ahn, Jinho Chowdhry Beeman, Jai Lee, Hun-Gyu Seo, Jaemyeong Mango Brook, Edward J. Millennial variations in atmospheric CO2 during the early Holocene (11.7–7.4 ka) |
author_facet |
Shin, Jinhwa Ahn, Jinho Chowdhry Beeman, Jai Lee, Hun-Gyu Seo, Jaemyeong Mango Brook, Edward J. |
author_sort |
Shin, Jinhwa |
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) |
publishDate |
2022 |
url |
https://doi.org/10.5194/cp-18-2063-2022 https://cp.copernicus.org/articles/18/2063/2022/ |
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 |
eISSN: 1814-9332 |
op_relation |
doi:10.5194/cp-18-2063-2022 https://cp.copernicus.org/articles/18/2063/2022/ |
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_ |
1766109551417884672 |