TY - JOUR
T1 - Stalagmite-inferred European westerly drift in the early Weichselian with centennial-scale variability in marine isotope stage 5a
AU - Chung, Yun Chuan
AU - Menviel, Laurie
AU - Marchionne, Arianna
AU - Mii, Horng Sheng
AU - Michel, Véronique
AU - Valensi, Patricia
AU - Jiang, Xiuyang
AU - Simon, Patrick
AU - Rossoni-Notter, Elena
AU - Moussous, Abdelkader
AU - Seppä, Heikki
AU - Chien, Yu Tang
AU - Wu, Chung Che
AU - Hu, Hsun Ming
AU - Shen, Chuan Chou
N1 - Funding Information:
We would like to deeply thank G.S. Burr of the Research Center for Future Earth, National Taiwan University, for his constructive suggestions. We are thankful for the financial support provided by grants from the Science Vanguard Research Program of the Ministry of Science and Technology, Taiwan, ROC (110-2123-M-002-009), the Higher Education Sprout Project of the Ministry of Education, Taiwan, ROC (110L901001 and 110L8907), and the National Taiwan University (109L8926). We are also grateful the Government of Monaco and the Museum of Prehistoric Anthropology of Monaco for the sample collections. L.M. acknowledges support from the Australian Research Council, grant FT180100606.
Funding Information:
We would like to deeply thank G.S. Burr of the Research Center for Future Earth, National Taiwan University, for his constructive suggestions. We are thankful for the financial support provided by grants from the Science Vanguard Research Program of the Ministry of Science and Technology, Taiwan , ROC ( 110-2123-M-002-009 ), the Higher Education Sprout Project of the Ministry of Education , Taiwan, ROC ( 110L901001 and 110L8907 ), and the National Taiwan University ( 109L8926 ). We are also grateful the Government of Monaco and the Museum of Prehistoric Anthropology of Monaco for the sample collections. L.M. acknowledges support from the Australian Research Council , grant FT180100606 .
Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/7/15
Y1 - 2022/7/15
N2 - he Weichselian glaciation is characterized by significant ocean circulation variations starting from ∼115 thousand years ago (ka) and terminating at ∼11.5 ka. The early Weichselian (115–74 ka), especially marine isotope stage (MIS) 5a at 85–74 ka, provides a window for understanding the linkage between the European westerlies and Mediterranean climate. However, lack of highly-resolved paleoclimate records with absolute chronologies hampers our knowledge of decadal-to-centennial-scale climate changes and forcings in the circum-Mediterranean realm. Here, we present 230Th-dated stalagmite-inferred hydroclimate records from Observatoire cave (43°44′ N, 7°25’ E), Monaco, for the period between 88.7 ± 0.4 and 80.3 ± 0.1 ka, covering portions of MIS 5b and 5a. Agreement between Observatoire and circum-Mediterranean stalagmite records confirm large-scale warming over the Atlantic-Europe territory during the transition from MIS 5b to 5a. Subdecadally-resolved Observatoire δ18O and δ13C records express four multi-centennial arid intervals in southern Europe at 84–80 ka in the first-half of MIS 5a, suggesting centennial westerly drifts, a finding supported by a model simulation. Westerly changes and associated arid events can be attributed to slowdowns of the Atlantic meridional overturning circulation, North Atlantic Oscillation states, and solar activity.
AB - he Weichselian glaciation is characterized by significant ocean circulation variations starting from ∼115 thousand years ago (ka) and terminating at ∼11.5 ka. The early Weichselian (115–74 ka), especially marine isotope stage (MIS) 5a at 85–74 ka, provides a window for understanding the linkage between the European westerlies and Mediterranean climate. However, lack of highly-resolved paleoclimate records with absolute chronologies hampers our knowledge of decadal-to-centennial-scale climate changes and forcings in the circum-Mediterranean realm. Here, we present 230Th-dated stalagmite-inferred hydroclimate records from Observatoire cave (43°44′ N, 7°25’ E), Monaco, for the period between 88.7 ± 0.4 and 80.3 ± 0.1 ka, covering portions of MIS 5b and 5a. Agreement between Observatoire and circum-Mediterranean stalagmite records confirm large-scale warming over the Atlantic-Europe territory during the transition from MIS 5b to 5a. Subdecadally-resolved Observatoire δ18O and δ13C records express four multi-centennial arid intervals in southern Europe at 84–80 ka in the first-half of MIS 5a, suggesting centennial westerly drifts, a finding supported by a model simulation. Westerly changes and associated arid events can be attributed to slowdowns of the Atlantic meridional overturning circulation, North Atlantic Oscillation states, and solar activity.
KW - AMOC
KW - MIS 5a
KW - Model simulation
KW - Multi-centennial arid intervals
KW - Precipitation
KW - Southern Europe
KW - Stalagmite
KW - Weichselian
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U2 - 10.1016/j.quascirev.2022.107581
DO - 10.1016/j.quascirev.2022.107581
M3 - Article
AN - SCOPUS:85131413439
SN - 0277-3791
VL - 288
JO - Quaternary Science Reviews
JF - Quaternary Science Reviews
M1 - 107581
ER -