The Effect of Past Saturation Changes on Noble Gas Reconstructions of Mean Ocean Temperature
Abstract The ocean's immense ability to store and release heat on centennial to millennial time scales modulates the impacts of climate perturbations. To gain a better understanding of past variations in mean ocean temperature (MOT), a noble gas‐based proxy measured from ancient air in ice core...
Published in: | Geophysical Research Letters |
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Online Access: | https://doi.org/10.1029/2022GL102055 https://doaj.org/article/0a335140f3ea4930bcbc6de3606c1ba2 |
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ftdoajarticles:oai:doaj.org/article:0a335140f3ea4930bcbc6de3606c1ba2 2024-09-09T19:44:54+00:00 The Effect of Past Saturation Changes on Noble Gas Reconstructions of Mean Ocean Temperature Frerk Pöppelmeier Daniel Baggenstos Markus Grimmer Zhijun Liu Jochen Schmitt Hubertus Fischer Thomas F. Stocker 2023-03-01T00:00:00Z https://doi.org/10.1029/2022GL102055 https://doaj.org/article/0a335140f3ea4930bcbc6de3606c1ba2 EN eng Wiley https://doi.org/10.1029/2022GL102055 https://doaj.org/toc/0094-8276 https://doaj.org/toc/1944-8007 1944-8007 0094-8276 doi:10.1029/2022GL102055 https://doaj.org/article/0a335140f3ea4930bcbc6de3606c1ba2 Geophysical Research Letters, Vol 50, Iss 6, Pp n/a-n/a (2023) mean ocean temperature last glacial maximum noble gases ocean modeling Geophysics. Cosmic physics QC801-809 article 2023 ftdoajarticles https://doi.org/10.1029/2022GL102055 2024-08-05T17:49:23Z Abstract The ocean's immense ability to store and release heat on centennial to millennial time scales modulates the impacts of climate perturbations. To gain a better understanding of past variations in mean ocean temperature (MOT), a noble gas‐based proxy measured from ancient air in ice cores has been developed. Here we assess non‐temperature effects that may influence the atmospheric noble gas ratios reconstructed from polar ice and how they impact the temperature signal with an intermediate complexity Earth system model. We find that changes in wind speed, sea‐ice extent, and ocean circulation have partially compensating effects on mean‐ocean noble gas saturation, leading to a slight reduction of noble gas undersaturation at the Last Glacial Maximum (LGM). Taking these effects and ice core measurements into account, our model suggests a revised MOT difference between the LGM and pre‐industrial of −2.1 ± 0.7°C that is also in improved agreement with other independent temperature reconstructions. Article in Journal/Newspaper ice core Sea ice Directory of Open Access Journals: DOAJ Articles Geophysical Research Letters 50 6 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
mean ocean temperature last glacial maximum noble gases ocean modeling Geophysics. Cosmic physics QC801-809 |
spellingShingle |
mean ocean temperature last glacial maximum noble gases ocean modeling Geophysics. Cosmic physics QC801-809 Frerk Pöppelmeier Daniel Baggenstos Markus Grimmer Zhijun Liu Jochen Schmitt Hubertus Fischer Thomas F. Stocker The Effect of Past Saturation Changes on Noble Gas Reconstructions of Mean Ocean Temperature |
topic_facet |
mean ocean temperature last glacial maximum noble gases ocean modeling Geophysics. Cosmic physics QC801-809 |
description |
Abstract The ocean's immense ability to store and release heat on centennial to millennial time scales modulates the impacts of climate perturbations. To gain a better understanding of past variations in mean ocean temperature (MOT), a noble gas‐based proxy measured from ancient air in ice cores has been developed. Here we assess non‐temperature effects that may influence the atmospheric noble gas ratios reconstructed from polar ice and how they impact the temperature signal with an intermediate complexity Earth system model. We find that changes in wind speed, sea‐ice extent, and ocean circulation have partially compensating effects on mean‐ocean noble gas saturation, leading to a slight reduction of noble gas undersaturation at the Last Glacial Maximum (LGM). Taking these effects and ice core measurements into account, our model suggests a revised MOT difference between the LGM and pre‐industrial of −2.1 ± 0.7°C that is also in improved agreement with other independent temperature reconstructions. |
format |
Article in Journal/Newspaper |
author |
Frerk Pöppelmeier Daniel Baggenstos Markus Grimmer Zhijun Liu Jochen Schmitt Hubertus Fischer Thomas F. Stocker |
author_facet |
Frerk Pöppelmeier Daniel Baggenstos Markus Grimmer Zhijun Liu Jochen Schmitt Hubertus Fischer Thomas F. Stocker |
author_sort |
Frerk Pöppelmeier |
title |
The Effect of Past Saturation Changes on Noble Gas Reconstructions of Mean Ocean Temperature |
title_short |
The Effect of Past Saturation Changes on Noble Gas Reconstructions of Mean Ocean Temperature |
title_full |
The Effect of Past Saturation Changes on Noble Gas Reconstructions of Mean Ocean Temperature |
title_fullStr |
The Effect of Past Saturation Changes on Noble Gas Reconstructions of Mean Ocean Temperature |
title_full_unstemmed |
The Effect of Past Saturation Changes on Noble Gas Reconstructions of Mean Ocean Temperature |
title_sort |
effect of past saturation changes on noble gas reconstructions of mean ocean temperature |
publisher |
Wiley |
publishDate |
2023 |
url |
https://doi.org/10.1029/2022GL102055 https://doaj.org/article/0a335140f3ea4930bcbc6de3606c1ba2 |
genre |
ice core Sea ice |
genre_facet |
ice core Sea ice |
op_source |
Geophysical Research Letters, Vol 50, Iss 6, Pp n/a-n/a (2023) |
op_relation |
https://doi.org/10.1029/2022GL102055 https://doaj.org/toc/0094-8276 https://doaj.org/toc/1944-8007 1944-8007 0094-8276 doi:10.1029/2022GL102055 https://doaj.org/article/0a335140f3ea4930bcbc6de3606c1ba2 |
op_doi |
https://doi.org/10.1029/2022GL102055 |
container_title |
Geophysical Research Letters |
container_volume |
50 |
container_issue |
6 |
_version_ |
1809914561596227584 |