A tale of shifting relations: East Asian summer and winter monsoon variability during the Holocene
Abstract Understanding the dynamics between the East Asian summer (EASM) and winter monsoon (EAWM) is needed to predict their variability under future global warming scenarios. Here, we investigate the relationship between EASM and EAWM as well as the mechanisms driving their variability during the...
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2021-03-01
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doaj-f27591eb46344ef3b844e6c7419085982021-03-28T11:30:58ZengNature Publishing GroupScientific Reports2045-23222021-03-0111111010.1038/s41598-021-85444-7A tale of shifting relations: East Asian summer and winter monsoon variability during the HoloceneStefanie Kaboth-Bahr0André Bahr1Christian Zeeden2Kweku A. Yamoah3Mahjoor Ahmad Lone4Chih-Kai Chuang5Ludvig Löwemark6Kuo-Yen Wei7Institute of Geosciences, University of PotsdamInstitute of Earth Sciences, Heidelberg UniversityLIAG, Leibniz Institute for Applied GeophysicsSchool of Geography, Earth and Environmental Sciences, University of BirminghamHigh-Precision Mass Spectrometry and Environment Change Laboratory, Department of Geosciences, National Taiwan UniversityDepartment of Geosciences, National Taiwan UniversityDepartment of Geosciences, National Taiwan UniversityDepartment of Geosciences, National Taiwan UniversityAbstract Understanding the dynamics between the East Asian summer (EASM) and winter monsoon (EAWM) is needed to predict their variability under future global warming scenarios. Here, we investigate the relationship between EASM and EAWM as well as the mechanisms driving their variability during the last 10,000 years by stacking marine and terrestrial (non-speleothem) proxy records from the East Asian realm. This provides a regional and proxy independent signal for both monsoonal systems. The respective signal was subsequently analysed using a linear regression model. We find that the phase relationship between EASM and EAWM is not time-constant and significantly depends on orbital configuration changes. In addition, changes in the Atlantic Meridional Overturning circulation, Arctic sea-ice coverage, El Niño-Southern Oscillation and Sun Spot numbers contributed to millennial scale changes in the EASM and EAWM during the Holocene. We also argue that the bulk signal of monsoonal activity captured by the stacked non-speleothem proxy records supports the previously argued bias of speleothem climatic archives to moisture source changes and/or seasonality.https://doi.org/10.1038/s41598-021-85444-7 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Stefanie Kaboth-Bahr André Bahr Christian Zeeden Kweku A. Yamoah Mahjoor Ahmad Lone Chih-Kai Chuang Ludvig Löwemark Kuo-Yen Wei |
spellingShingle |
Stefanie Kaboth-Bahr André Bahr Christian Zeeden Kweku A. Yamoah Mahjoor Ahmad Lone Chih-Kai Chuang Ludvig Löwemark Kuo-Yen Wei A tale of shifting relations: East Asian summer and winter monsoon variability during the Holocene Scientific Reports |
author_facet |
Stefanie Kaboth-Bahr André Bahr Christian Zeeden Kweku A. Yamoah Mahjoor Ahmad Lone Chih-Kai Chuang Ludvig Löwemark Kuo-Yen Wei |
author_sort |
Stefanie Kaboth-Bahr |
title |
A tale of shifting relations: East Asian summer and winter monsoon variability during the Holocene |
title_short |
A tale of shifting relations: East Asian summer and winter monsoon variability during the Holocene |
title_full |
A tale of shifting relations: East Asian summer and winter monsoon variability during the Holocene |
title_fullStr |
A tale of shifting relations: East Asian summer and winter monsoon variability during the Holocene |
title_full_unstemmed |
A tale of shifting relations: East Asian summer and winter monsoon variability during the Holocene |
title_sort |
tale of shifting relations: east asian summer and winter monsoon variability during the holocene |
publisher |
Nature Publishing Group |
series |
Scientific Reports |
issn |
2045-2322 |
publishDate |
2021-03-01 |
description |
Abstract Understanding the dynamics between the East Asian summer (EASM) and winter monsoon (EAWM) is needed to predict their variability under future global warming scenarios. Here, we investigate the relationship between EASM and EAWM as well as the mechanisms driving their variability during the last 10,000 years by stacking marine and terrestrial (non-speleothem) proxy records from the East Asian realm. This provides a regional and proxy independent signal for both monsoonal systems. The respective signal was subsequently analysed using a linear regression model. We find that the phase relationship between EASM and EAWM is not time-constant and significantly depends on orbital configuration changes. In addition, changes in the Atlantic Meridional Overturning circulation, Arctic sea-ice coverage, El Niño-Southern Oscillation and Sun Spot numbers contributed to millennial scale changes in the EASM and EAWM during the Holocene. We also argue that the bulk signal of monsoonal activity captured by the stacked non-speleothem proxy records supports the previously argued bias of speleothem climatic archives to moisture source changes and/or seasonality. |
url |
https://doi.org/10.1038/s41598-021-85444-7 |
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