Deglacial variability of South China hydroclimate heavily contributed by autumn rainfall
Abstract The deglacial hydroclimate in South China remains a long-standing topic of debate due to the lack of reliable moisture proxies and inconsistent model simulations. A recent hydroclimate proxy suggests that South China became wet in cold stadials during the last deglaciation, with the intensi...
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crspringernat:10.1038/s41467-021-26106-0 2023-05-15T17:33:56+02:00 Deglacial variability of South China hydroclimate heavily contributed by autumn rainfall He, Chengfei Liu, Zhengyu Otto-Bliesner, Bette L. Brady, Esther C. Zhu, Chenyu Tomas, Robert Gu, Sifan Han, Jing Jin, Yishuai 2021 http://dx.doi.org/10.1038/s41467-021-26106-0 https://www.nature.com/articles/s41467-021-26106-0.pdf https://www.nature.com/articles/s41467-021-26106-0 en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Nature Communications volume 12, issue 1 ISSN 2041-1723 General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry journal-article 2021 crspringernat https://doi.org/10.1038/s41467-021-26106-0 2022-01-04T08:23:49Z Abstract The deglacial hydroclimate in South China remains a long-standing topic of debate due to the lack of reliable moisture proxies and inconsistent model simulations. A recent hydroclimate proxy suggests that South China became wet in cold stadials during the last deglaciation, with the intensification proposed to be contributed mostly by the East Asian summer monsoon (EASM). Here, based on a deglacial simulation in a state-of-the-art climate model that well reproduces the evolution of EASM, winter monsoon (EAWM) and the associated water isotopes in East Asia, we propose that the intensified hydroclimate in South China is also contributed heavily by the rainfall in autumn, during the transition between EASM and EAWM. The excessive rainfall in autumn results from the convergence between anomalous northerly wind due to amplified land-sea thermal contrast and anomalous southerly wind associated with the anticyclone over Western North Pacific, both of which are, in turn, forced by the slowdown of the Atlantic thermohaline circulation. Regardless the rainfall change, however, the modeled δ 18 O p remains largely unchanged in autumn. Our results provide new insights to East Asia monsoon associated with climate change in the North Atlantic. Article in Journal/Newspaper North Atlantic Springer Nature (via Crossref) Pacific Nature Communications 12 1 |
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Open Polar |
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Springer Nature (via Crossref) |
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crspringernat |
language |
English |
topic |
General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry |
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General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry He, Chengfei Liu, Zhengyu Otto-Bliesner, Bette L. Brady, Esther C. Zhu, Chenyu Tomas, Robert Gu, Sifan Han, Jing Jin, Yishuai Deglacial variability of South China hydroclimate heavily contributed by autumn rainfall |
topic_facet |
General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry |
description |
Abstract The deglacial hydroclimate in South China remains a long-standing topic of debate due to the lack of reliable moisture proxies and inconsistent model simulations. A recent hydroclimate proxy suggests that South China became wet in cold stadials during the last deglaciation, with the intensification proposed to be contributed mostly by the East Asian summer monsoon (EASM). Here, based on a deglacial simulation in a state-of-the-art climate model that well reproduces the evolution of EASM, winter monsoon (EAWM) and the associated water isotopes in East Asia, we propose that the intensified hydroclimate in South China is also contributed heavily by the rainfall in autumn, during the transition between EASM and EAWM. The excessive rainfall in autumn results from the convergence between anomalous northerly wind due to amplified land-sea thermal contrast and anomalous southerly wind associated with the anticyclone over Western North Pacific, both of which are, in turn, forced by the slowdown of the Atlantic thermohaline circulation. Regardless the rainfall change, however, the modeled δ 18 O p remains largely unchanged in autumn. Our results provide new insights to East Asia monsoon associated with climate change in the North Atlantic. |
format |
Article in Journal/Newspaper |
author |
He, Chengfei Liu, Zhengyu Otto-Bliesner, Bette L. Brady, Esther C. Zhu, Chenyu Tomas, Robert Gu, Sifan Han, Jing Jin, Yishuai |
author_facet |
He, Chengfei Liu, Zhengyu Otto-Bliesner, Bette L. Brady, Esther C. Zhu, Chenyu Tomas, Robert Gu, Sifan Han, Jing Jin, Yishuai |
author_sort |
He, Chengfei |
title |
Deglacial variability of South China hydroclimate heavily contributed by autumn rainfall |
title_short |
Deglacial variability of South China hydroclimate heavily contributed by autumn rainfall |
title_full |
Deglacial variability of South China hydroclimate heavily contributed by autumn rainfall |
title_fullStr |
Deglacial variability of South China hydroclimate heavily contributed by autumn rainfall |
title_full_unstemmed |
Deglacial variability of South China hydroclimate heavily contributed by autumn rainfall |
title_sort |
deglacial variability of south china hydroclimate heavily contributed by autumn rainfall |
publisher |
Springer Science and Business Media LLC |
publishDate |
2021 |
url |
http://dx.doi.org/10.1038/s41467-021-26106-0 https://www.nature.com/articles/s41467-021-26106-0.pdf https://www.nature.com/articles/s41467-021-26106-0 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Nature Communications volume 12, issue 1 ISSN 2041-1723 |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41467-021-26106-0 |
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Nature Communications |
container_volume |
12 |
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1 |
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1766132605159211008 |