Cargando…
Marine anoxia linked to abrupt global warming during Earth’s penultimate icehouse
Piecing together the history of carbon (C) perturbation events throughout Earth’s history has provided key insights into how the Earth system responds to abrupt warming. Previous studies, however, focused on short-term warming events that were superimposed on longer-term greenhouse climate states. H...
Autores principales: | , , , , , , , , , , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
National Academy of Sciences
2022
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9171642/ https://www.ncbi.nlm.nih.gov/pubmed/35500118 http://dx.doi.org/10.1073/pnas.2115231119 |
_version_ | 1784721713749032960 |
---|---|
author | Chen, Jitao Montañez, Isabel P. Zhang, Shuang Isson, Terry T. Macarewich, Sophia I. Planavsky, Noah J. Zhang, Feifei Rauzi, Sofia Daviau, Kierstin Yao, Le Qi, Yu-ping Wang, Yue Fan, Jun-xuan Poulsen, Christopher J. Anbar, Ariel D. Shen, Shu-zhong Wang, Xiang-dong |
author_facet | Chen, Jitao Montañez, Isabel P. Zhang, Shuang Isson, Terry T. Macarewich, Sophia I. Planavsky, Noah J. Zhang, Feifei Rauzi, Sofia Daviau, Kierstin Yao, Le Qi, Yu-ping Wang, Yue Fan, Jun-xuan Poulsen, Christopher J. Anbar, Ariel D. Shen, Shu-zhong Wang, Xiang-dong |
author_sort | Chen, Jitao |
collection | PubMed |
description | Piecing together the history of carbon (C) perturbation events throughout Earth’s history has provided key insights into how the Earth system responds to abrupt warming. Previous studies, however, focused on short-term warming events that were superimposed on longer-term greenhouse climate states. Here, we present an integrated proxy (C and uranium [U] isotopes and paleo CO(2)) and multicomponent modeling approach to investigate an abrupt C perturbation and global warming event (∼304 Ma) that occurred during a paleo-glacial state. We report pronounced negative C and U isotopic excursions coincident with a doubling of atmospheric CO(2) partial pressure and a biodiversity nadir. The isotopic excursions can be linked to an injection of ∼9,000 Gt of organic matter–derived C over ∼300 kyr and to near 20% of areal extent of seafloor anoxia. Earth system modeling indicates that widespread anoxic conditions can be linked to enhanced thermocline stratification and increased nutrient fluxes during this global warming within an icehouse. |
format | Online Article Text |
id | pubmed-9171642 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | National Academy of Sciences |
record_format | MEDLINE/PubMed |
spelling | pubmed-91716422022-06-08 Marine anoxia linked to abrupt global warming during Earth’s penultimate icehouse Chen, Jitao Montañez, Isabel P. Zhang, Shuang Isson, Terry T. Macarewich, Sophia I. Planavsky, Noah J. Zhang, Feifei Rauzi, Sofia Daviau, Kierstin Yao, Le Qi, Yu-ping Wang, Yue Fan, Jun-xuan Poulsen, Christopher J. Anbar, Ariel D. Shen, Shu-zhong Wang, Xiang-dong Proc Natl Acad Sci U S A Physical Sciences Piecing together the history of carbon (C) perturbation events throughout Earth’s history has provided key insights into how the Earth system responds to abrupt warming. Previous studies, however, focused on short-term warming events that were superimposed on longer-term greenhouse climate states. Here, we present an integrated proxy (C and uranium [U] isotopes and paleo CO(2)) and multicomponent modeling approach to investigate an abrupt C perturbation and global warming event (∼304 Ma) that occurred during a paleo-glacial state. We report pronounced negative C and U isotopic excursions coincident with a doubling of atmospheric CO(2) partial pressure and a biodiversity nadir. The isotopic excursions can be linked to an injection of ∼9,000 Gt of organic matter–derived C over ∼300 kyr and to near 20% of areal extent of seafloor anoxia. Earth system modeling indicates that widespread anoxic conditions can be linked to enhanced thermocline stratification and increased nutrient fluxes during this global warming within an icehouse. National Academy of Sciences 2022-05-02 2022-05-10 /pmc/articles/PMC9171642/ /pubmed/35500118 http://dx.doi.org/10.1073/pnas.2115231119 Text en Copyright © 2022 the Author(s). Published by PNAS. https://creativecommons.org/licenses/by-nc-nd/4.0/This open access article is distributed under Creative Commons Attribution-NonCommercial-NoDerivatives License 4.0 (CC BY-NC-ND) (https://creativecommons.org/licenses/by-nc-nd/4.0/) . |
spellingShingle | Physical Sciences Chen, Jitao Montañez, Isabel P. Zhang, Shuang Isson, Terry T. Macarewich, Sophia I. Planavsky, Noah J. Zhang, Feifei Rauzi, Sofia Daviau, Kierstin Yao, Le Qi, Yu-ping Wang, Yue Fan, Jun-xuan Poulsen, Christopher J. Anbar, Ariel D. Shen, Shu-zhong Wang, Xiang-dong Marine anoxia linked to abrupt global warming during Earth’s penultimate icehouse |
title | Marine anoxia linked to abrupt global warming during Earth’s penultimate icehouse |
title_full | Marine anoxia linked to abrupt global warming during Earth’s penultimate icehouse |
title_fullStr | Marine anoxia linked to abrupt global warming during Earth’s penultimate icehouse |
title_full_unstemmed | Marine anoxia linked to abrupt global warming during Earth’s penultimate icehouse |
title_short | Marine anoxia linked to abrupt global warming during Earth’s penultimate icehouse |
title_sort | marine anoxia linked to abrupt global warming during earth’s penultimate icehouse |
topic | Physical Sciences |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9171642/ https://www.ncbi.nlm.nih.gov/pubmed/35500118 http://dx.doi.org/10.1073/pnas.2115231119 |
work_keys_str_mv | AT chenjitao marineanoxialinkedtoabruptglobalwarmingduringearthspenultimateicehouse AT montanezisabelp marineanoxialinkedtoabruptglobalwarmingduringearthspenultimateicehouse AT zhangshuang marineanoxialinkedtoabruptglobalwarmingduringearthspenultimateicehouse AT issonterryt marineanoxialinkedtoabruptglobalwarmingduringearthspenultimateicehouse AT macarewichsophiai marineanoxialinkedtoabruptglobalwarmingduringearthspenultimateicehouse AT planavskynoahj marineanoxialinkedtoabruptglobalwarmingduringearthspenultimateicehouse AT zhangfeifei marineanoxialinkedtoabruptglobalwarmingduringearthspenultimateicehouse AT rauzisofia marineanoxialinkedtoabruptglobalwarmingduringearthspenultimateicehouse AT daviaukierstin marineanoxialinkedtoabruptglobalwarmingduringearthspenultimateicehouse AT yaole marineanoxialinkedtoabruptglobalwarmingduringearthspenultimateicehouse AT qiyuping marineanoxialinkedtoabruptglobalwarmingduringearthspenultimateicehouse AT wangyue marineanoxialinkedtoabruptglobalwarmingduringearthspenultimateicehouse AT fanjunxuan marineanoxialinkedtoabruptglobalwarmingduringearthspenultimateicehouse AT poulsenchristopherj marineanoxialinkedtoabruptglobalwarmingduringearthspenultimateicehouse AT anbararield marineanoxialinkedtoabruptglobalwarmingduringearthspenultimateicehouse AT shenshuzhong marineanoxialinkedtoabruptglobalwarmingduringearthspenultimateicehouse AT wangxiangdong marineanoxialinkedtoabruptglobalwarmingduringearthspenultimateicehouse |