Pacific freshening drives Pliocene cooling and Asian monsoon intensification
The monsoon is a fundamental component of Earth's climate. The Pliocene warm period is characterized by long-term global cooling yet concurrent monsoon dynamics are poorly known. Here we present the first fully quantified and calibrated reconstructions of separate Pliocene air temperature and E...
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ftunivrhodeislan:oai:digitalcommons.uri.edu:gsofacpubs-1528 2024-09-15T18:35:26+00:00 Pacific freshening drives Pliocene cooling and Asian monsoon intensification Nie, Junsheng Stevens, Thomas Song, Yongui King, John W. Zhang, Rui Ji, Shunchuan Gong, Lisha Cares, Danielle 2014-01-01T08:00:00Z application/pdf https://digitalcommons.uri.edu/gsofacpubs/556 https://doi.org/10.1038/srep05474 https://digitalcommons.uri.edu/context/gsofacpubs/article/1528/viewcontent/King_Cares_PacificFreshening_2014.pdf https://digitalcommons.uri.edu/context/gsofacpubs/article/1528/filename/0/type/additional/viewcontent/King_Cares_PacificFreshening_2014_SI.pdf unknown DigitalCommons@URI https://digitalcommons.uri.edu/gsofacpubs/556 doi:10.1038/srep05474 https://digitalcommons.uri.edu/context/gsofacpubs/article/1528/viewcontent/King_Cares_PacificFreshening_2014.pdf https://digitalcommons.uri.edu/context/gsofacpubs/article/1528/filename/0/type/additional/viewcontent/King_Cares_PacificFreshening_2014_SI.pdf http://creativecommons.org/licenses/by-nc-sa/4.0/ Graduate School of Oceanography Faculty Publications text 2014 ftunivrhodeislan https://doi.org/10.1038/srep05474 2024-08-21T00:09:33Z The monsoon is a fundamental component of Earth's climate. The Pliocene warm period is characterized by long-term global cooling yet concurrent monsoon dynamics are poorly known. Here we present the first fully quantified and calibrated reconstructions of separate Pliocene air temperature and East Asian summer monsoon precipitation histories on the Chinese Loess Plateau through joint analysis of loess/red clay magnetic parameters with different sensitivities to air temperature and precipitation. East Asian summer monsoon precipitation shows an intensified trend, paradoxically at the same time that climate cooled. We propose a hitherto unrecognized feedback where persistently intensified East Asian summer monsoon during the late Pliocene, triggered by the gradual closure of the Panama Seaway, reinforced late Pliocene Pacific freshening, sea-ice development and ice volume increase, culminating in initiation of the extensive Northern Hemisphere glaciations of the Quaternary Ice Age. This feedback mechanism represents a fundamental reinterpretation of the origin of the Quaternary glaciations and the impact of the monsoon. Text Sea ice University of Rhode Island: DigitalCommons@URI Scientific Reports 4 1 |
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Open Polar |
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University of Rhode Island: DigitalCommons@URI |
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ftunivrhodeislan |
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unknown |
description |
The monsoon is a fundamental component of Earth's climate. The Pliocene warm period is characterized by long-term global cooling yet concurrent monsoon dynamics are poorly known. Here we present the first fully quantified and calibrated reconstructions of separate Pliocene air temperature and East Asian summer monsoon precipitation histories on the Chinese Loess Plateau through joint analysis of loess/red clay magnetic parameters with different sensitivities to air temperature and precipitation. East Asian summer monsoon precipitation shows an intensified trend, paradoxically at the same time that climate cooled. We propose a hitherto unrecognized feedback where persistently intensified East Asian summer monsoon during the late Pliocene, triggered by the gradual closure of the Panama Seaway, reinforced late Pliocene Pacific freshening, sea-ice development and ice volume increase, culminating in initiation of the extensive Northern Hemisphere glaciations of the Quaternary Ice Age. This feedback mechanism represents a fundamental reinterpretation of the origin of the Quaternary glaciations and the impact of the monsoon. |
format |
Text |
author |
Nie, Junsheng Stevens, Thomas Song, Yongui King, John W. Zhang, Rui Ji, Shunchuan Gong, Lisha Cares, Danielle |
spellingShingle |
Nie, Junsheng Stevens, Thomas Song, Yongui King, John W. Zhang, Rui Ji, Shunchuan Gong, Lisha Cares, Danielle Pacific freshening drives Pliocene cooling and Asian monsoon intensification |
author_facet |
Nie, Junsheng Stevens, Thomas Song, Yongui King, John W. Zhang, Rui Ji, Shunchuan Gong, Lisha Cares, Danielle |
author_sort |
Nie, Junsheng |
title |
Pacific freshening drives Pliocene cooling and Asian monsoon intensification |
title_short |
Pacific freshening drives Pliocene cooling and Asian monsoon intensification |
title_full |
Pacific freshening drives Pliocene cooling and Asian monsoon intensification |
title_fullStr |
Pacific freshening drives Pliocene cooling and Asian monsoon intensification |
title_full_unstemmed |
Pacific freshening drives Pliocene cooling and Asian monsoon intensification |
title_sort |
pacific freshening drives pliocene cooling and asian monsoon intensification |
publisher |
DigitalCommons@URI |
publishDate |
2014 |
url |
https://digitalcommons.uri.edu/gsofacpubs/556 https://doi.org/10.1038/srep05474 https://digitalcommons.uri.edu/context/gsofacpubs/article/1528/viewcontent/King_Cares_PacificFreshening_2014.pdf https://digitalcommons.uri.edu/context/gsofacpubs/article/1528/filename/0/type/additional/viewcontent/King_Cares_PacificFreshening_2014_SI.pdf |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Graduate School of Oceanography Faculty Publications |
op_relation |
https://digitalcommons.uri.edu/gsofacpubs/556 doi:10.1038/srep05474 https://digitalcommons.uri.edu/context/gsofacpubs/article/1528/viewcontent/King_Cares_PacificFreshening_2014.pdf https://digitalcommons.uri.edu/context/gsofacpubs/article/1528/filename/0/type/additional/viewcontent/King_Cares_PacificFreshening_2014_SI.pdf |
op_rights |
http://creativecommons.org/licenses/by-nc-sa/4.0/ |
op_doi |
https://doi.org/10.1038/srep05474 |
container_title |
Scientific Reports |
container_volume |
4 |
container_issue |
1 |
_version_ |
1810478629146066944 |