Climate transition in the Asia inland at 0.8–0.6 Ma related to astronomically forced ice sheet expansion
Knowing the evolution history of the climate systems in the Asian inland dominated by either the Westerlies or the Asian monsoon, and understanding their associated driving mechanisms are crucial for assessing future trends of climate and environmental conditions in this region, but both the evoluti...
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Online Access: | https://research.vu.nl/en/publications/1d44a4be-c147-46f8-9dbf-65fe97436911 https://doi.org/10.1016/j.quascirev.2020.106580 https://hdl.handle.net/1871.1/1d44a4be-c147-46f8-9dbf-65fe97436911 https://research.vu.nl/ws/files/229219377/Climate_transition_in_the_Asia_inland_at_0.8_0.6_Ma_related_to_astronomically_forced_ice_sheet_expansion.pdf http://www.scopus.com/inward/record.url?scp=85091233500&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=85091233500&partnerID=8YFLogxK |
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ftvuamstcris:oai:research.vu.nl:publications/1d44a4be-c147-46f8-9dbf-65fe97436911 2024-09-09T19:45:14+00:00 Climate transition in the Asia inland at 0.8–0.6 Ma related to astronomically forced ice sheet expansion Han, Wenxia Appel, Erwin Galy, Albert Rösler, Wolfgang Fang, Xiaomin Zhu, Xiuhua Vandenberghe, Jef Wang, Jiuyi Berger, André Lü, Shuang Zhang, Tao 2020-11-15 application/pdf https://research.vu.nl/en/publications/1d44a4be-c147-46f8-9dbf-65fe97436911 https://doi.org/10.1016/j.quascirev.2020.106580 https://hdl.handle.net/1871.1/1d44a4be-c147-46f8-9dbf-65fe97436911 https://research.vu.nl/ws/files/229219377/Climate_transition_in_the_Asia_inland_at_0.8_0.6_Ma_related_to_astronomically_forced_ice_sheet_expansion.pdf http://www.scopus.com/inward/record.url?scp=85091233500&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=85091233500&partnerID=8YFLogxK eng eng https://research.vu.nl/en/publications/1d44a4be-c147-46f8-9dbf-65fe97436911 info:eu-repo/semantics/openAccess Han , W , Appel , E , Galy , A , Rösler , W , Fang , X , Zhu , X , Vandenberghe , J , Wang , J , Berger , A , Lü , S & Zhang , T 2020 , ' Climate transition in the Asia inland at 0.8–0.6 Ma related to astronomically forced ice sheet expansion ' , Quaternary Science Reviews , vol. 248 , 106580 , pp. 1-13 . https://doi.org/10.1016/j.quascirev.2020.106580 East asia summer monsoon Ice sheet expansion Linear and non-linear time series analysis Orbital forcing Qaidam basin Westerly jet article 2020 ftvuamstcris https://doi.org/10.1016/j.quascirev.2020.106580 2024-08-22T00:13:34Z Knowing the evolution history of the climate systems in the Asian inland dominated by either the Westerlies or the Asian monsoon, and understanding their associated driving mechanisms are crucial for assessing future trends of climate and environmental conditions in this region, but both the evolution and mechanisms are still under debate. In this study, we present a comparative analysis of massive data from an accurately dated drill core retrieved from the Westerlies controlled western Qaidam Basin (QB), with records from the Chinese Loess Plateau (CLP) dominated by the East Asia summer monsoon (EASM), to track the time and frequency domain evolution patterns and dynamic changes of the QB and the CLP systems. The results infer two main conclusions. First, a critical transition in the evolution of Qaidam paleolake occurred at 0.8–0.6 Ma, characterized by striking changes in proxy variations and a system shift from periodic variations to more irregular fluctuations after 0.6 Ma. Second, a similar evolution pattern prevailed in the Qaidam paleolake region and in the EASM-dominated CLP between ∼2.7 and ∼1.2 Ma, but a divergence of both systems started at ∼1.2 Ma and fully established after 0.6 Ma, when largely fluctuating climate conditions in the QB with a distinct drying trend was accompanied by synchronous largely fluctuated EASM with an increasing trend after 0.6 Ma. We suggest that ice sheet expansion in the Northern Hemisphere, promoted by co-occurrence of low obliquity amplitudes and low eccentricity, drove both systems across a threshold at ∼1.2 Ma, and the internal forcing due to glaciation disturbed the previous response of both systems to solar insolation and led to the divergence of two systems. At ∼0.9–0.8 Ma, a node of the 1.2-Myr obliquity cycle co-occurred with an eccentricity minimum, which together with coeval decrease in atmospheric CO 2 concentration, could have facilitated a striking expansion of ice sheets. The resulting more equatorial and zonally oriented northern hemisphere westerly jet ... Article in Journal/Newspaper Ice Sheet Vrije Universiteit Amsterdam (VU): Research Portal Quaternary Science Reviews 248 106580 |
institution |
Open Polar |
collection |
Vrije Universiteit Amsterdam (VU): Research Portal |
op_collection_id |
ftvuamstcris |
language |
English |
topic |
East asia summer monsoon Ice sheet expansion Linear and non-linear time series analysis Orbital forcing Qaidam basin Westerly jet |
spellingShingle |
East asia summer monsoon Ice sheet expansion Linear and non-linear time series analysis Orbital forcing Qaidam basin Westerly jet Han, Wenxia Appel, Erwin Galy, Albert Rösler, Wolfgang Fang, Xiaomin Zhu, Xiuhua Vandenberghe, Jef Wang, Jiuyi Berger, André Lü, Shuang Zhang, Tao Climate transition in the Asia inland at 0.8–0.6 Ma related to astronomically forced ice sheet expansion |
topic_facet |
East asia summer monsoon Ice sheet expansion Linear and non-linear time series analysis Orbital forcing Qaidam basin Westerly jet |
description |
Knowing the evolution history of the climate systems in the Asian inland dominated by either the Westerlies or the Asian monsoon, and understanding their associated driving mechanisms are crucial for assessing future trends of climate and environmental conditions in this region, but both the evolution and mechanisms are still under debate. In this study, we present a comparative analysis of massive data from an accurately dated drill core retrieved from the Westerlies controlled western Qaidam Basin (QB), with records from the Chinese Loess Plateau (CLP) dominated by the East Asia summer monsoon (EASM), to track the time and frequency domain evolution patterns and dynamic changes of the QB and the CLP systems. The results infer two main conclusions. First, a critical transition in the evolution of Qaidam paleolake occurred at 0.8–0.6 Ma, characterized by striking changes in proxy variations and a system shift from periodic variations to more irregular fluctuations after 0.6 Ma. Second, a similar evolution pattern prevailed in the Qaidam paleolake region and in the EASM-dominated CLP between ∼2.7 and ∼1.2 Ma, but a divergence of both systems started at ∼1.2 Ma and fully established after 0.6 Ma, when largely fluctuating climate conditions in the QB with a distinct drying trend was accompanied by synchronous largely fluctuated EASM with an increasing trend after 0.6 Ma. We suggest that ice sheet expansion in the Northern Hemisphere, promoted by co-occurrence of low obliquity amplitudes and low eccentricity, drove both systems across a threshold at ∼1.2 Ma, and the internal forcing due to glaciation disturbed the previous response of both systems to solar insolation and led to the divergence of two systems. At ∼0.9–0.8 Ma, a node of the 1.2-Myr obliquity cycle co-occurred with an eccentricity minimum, which together with coeval decrease in atmospheric CO 2 concentration, could have facilitated a striking expansion of ice sheets. The resulting more equatorial and zonally oriented northern hemisphere westerly jet ... |
format |
Article in Journal/Newspaper |
author |
Han, Wenxia Appel, Erwin Galy, Albert Rösler, Wolfgang Fang, Xiaomin Zhu, Xiuhua Vandenberghe, Jef Wang, Jiuyi Berger, André Lü, Shuang Zhang, Tao |
author_facet |
Han, Wenxia Appel, Erwin Galy, Albert Rösler, Wolfgang Fang, Xiaomin Zhu, Xiuhua Vandenberghe, Jef Wang, Jiuyi Berger, André Lü, Shuang Zhang, Tao |
author_sort |
Han, Wenxia |
title |
Climate transition in the Asia inland at 0.8–0.6 Ma related to astronomically forced ice sheet expansion |
title_short |
Climate transition in the Asia inland at 0.8–0.6 Ma related to astronomically forced ice sheet expansion |
title_full |
Climate transition in the Asia inland at 0.8–0.6 Ma related to astronomically forced ice sheet expansion |
title_fullStr |
Climate transition in the Asia inland at 0.8–0.6 Ma related to astronomically forced ice sheet expansion |
title_full_unstemmed |
Climate transition in the Asia inland at 0.8–0.6 Ma related to astronomically forced ice sheet expansion |
title_sort |
climate transition in the asia inland at 0.8–0.6 ma related to astronomically forced ice sheet expansion |
publishDate |
2020 |
url |
https://research.vu.nl/en/publications/1d44a4be-c147-46f8-9dbf-65fe97436911 https://doi.org/10.1016/j.quascirev.2020.106580 https://hdl.handle.net/1871.1/1d44a4be-c147-46f8-9dbf-65fe97436911 https://research.vu.nl/ws/files/229219377/Climate_transition_in_the_Asia_inland_at_0.8_0.6_Ma_related_to_astronomically_forced_ice_sheet_expansion.pdf http://www.scopus.com/inward/record.url?scp=85091233500&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=85091233500&partnerID=8YFLogxK |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Han , W , Appel , E , Galy , A , Rösler , W , Fang , X , Zhu , X , Vandenberghe , J , Wang , J , Berger , A , Lü , S & Zhang , T 2020 , ' Climate transition in the Asia inland at 0.8–0.6 Ma related to astronomically forced ice sheet expansion ' , Quaternary Science Reviews , vol. 248 , 106580 , pp. 1-13 . https://doi.org/10.1016/j.quascirev.2020.106580 |
op_relation |
https://research.vu.nl/en/publications/1d44a4be-c147-46f8-9dbf-65fe97436911 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.quascirev.2020.106580 |
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