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CO(2)-forced Late Miocene cooling and ecosystem reorganizations in East Asia

In parallel with pronounced cooling in the oceans, vast areas of the continents experienced enhanced aridification and restructuring of vegetation and animal communities during the Late Miocene. Debate continues over whether pCO(2)-induced global cooling was the primary driver of this climate and ec...

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Autores principales: Wen, Yixiong, Zhang, Laiming, Holbourn, Ann E., Zhu, Chenguang, Huntington, Katharine W., Jin, Tianjie, Li, Yalin, Wang, Chengshan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: National Academy of Sciences 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9945954/
https://www.ncbi.nlm.nih.gov/pubmed/36689658
http://dx.doi.org/10.1073/pnas.2214655120
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author Wen, Yixiong
Zhang, Laiming
Holbourn, Ann E.
Zhu, Chenguang
Huntington, Katharine W.
Jin, Tianjie
Li, Yalin
Wang, Chengshan
author_facet Wen, Yixiong
Zhang, Laiming
Holbourn, Ann E.
Zhu, Chenguang
Huntington, Katharine W.
Jin, Tianjie
Li, Yalin
Wang, Chengshan
author_sort Wen, Yixiong
collection PubMed
description In parallel with pronounced cooling in the oceans, vast areas of the continents experienced enhanced aridification and restructuring of vegetation and animal communities during the Late Miocene. Debate continues over whether pCO(2)-induced global cooling was the primary driver of this climate and ecosystem upheaval on land. Here we present an 8 to 5 Ma land surface temperatures (LST) record from East Asia derived from paleosol carbonate clumped isotopes and integrated with climate model simulations. The LST cooled by ~7 °C between 7.5 and 5.7 Ma, followed by rapid warming across the Miocene–Pliocene transition (5.5 to 5 Ma). These changes occurred synchronously with variations in alkenone and Mg/Ca-based sea surface temperatures and with hydroclimate and ecosystem shifts in East Asia, highlighting a global climate forcing mechanism. Our modeling experiments additionally demonstrate that pCO(2)-forced cooling would have altered moisture transfer and pathways and driven extensive aridification in East Asia. We, thus, conclude that the East Asian hydroclimate and ecosystem shift was primarily controlled by pCO(2)-forced global cooling between 8 and 5 Ma.
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spelling pubmed-99459542023-07-23 CO(2)-forced Late Miocene cooling and ecosystem reorganizations in East Asia Wen, Yixiong Zhang, Laiming Holbourn, Ann E. Zhu, Chenguang Huntington, Katharine W. Jin, Tianjie Li, Yalin Wang, Chengshan Proc Natl Acad Sci U S A Physical Sciences In parallel with pronounced cooling in the oceans, vast areas of the continents experienced enhanced aridification and restructuring of vegetation and animal communities during the Late Miocene. Debate continues over whether pCO(2)-induced global cooling was the primary driver of this climate and ecosystem upheaval on land. Here we present an 8 to 5 Ma land surface temperatures (LST) record from East Asia derived from paleosol carbonate clumped isotopes and integrated with climate model simulations. The LST cooled by ~7 °C between 7.5 and 5.7 Ma, followed by rapid warming across the Miocene–Pliocene transition (5.5 to 5 Ma). These changes occurred synchronously with variations in alkenone and Mg/Ca-based sea surface temperatures and with hydroclimate and ecosystem shifts in East Asia, highlighting a global climate forcing mechanism. Our modeling experiments additionally demonstrate that pCO(2)-forced cooling would have altered moisture transfer and pathways and driven extensive aridification in East Asia. We, thus, conclude that the East Asian hydroclimate and ecosystem shift was primarily controlled by pCO(2)-forced global cooling between 8 and 5 Ma. National Academy of Sciences 2023-01-23 2023-01-31 /pmc/articles/PMC9945954/ /pubmed/36689658 http://dx.doi.org/10.1073/pnas.2214655120 Text en Copyright © 2023 the Author(s). Published by PNAS. https://creativecommons.org/licenses/by-nc-nd/4.0/This 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
Wen, Yixiong
Zhang, Laiming
Holbourn, Ann E.
Zhu, Chenguang
Huntington, Katharine W.
Jin, Tianjie
Li, Yalin
Wang, Chengshan
CO(2)-forced Late Miocene cooling and ecosystem reorganizations in East Asia
title CO(2)-forced Late Miocene cooling and ecosystem reorganizations in East Asia
title_full CO(2)-forced Late Miocene cooling and ecosystem reorganizations in East Asia
title_fullStr CO(2)-forced Late Miocene cooling and ecosystem reorganizations in East Asia
title_full_unstemmed CO(2)-forced Late Miocene cooling and ecosystem reorganizations in East Asia
title_short CO(2)-forced Late Miocene cooling and ecosystem reorganizations in East Asia
title_sort co(2)-forced late miocene cooling and ecosystem reorganizations in east asia
topic Physical Sciences
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9945954/
https://www.ncbi.nlm.nih.gov/pubmed/36689658
http://dx.doi.org/10.1073/pnas.2214655120
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