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Science Bulletin 2024年第3期69卷 375-381页

作者：庞洪喜张王滨吴霜叶 Theo M.Jenk margit schwikowski 侯书贵 Key Laboratory of Coast and Island Development of Ministry of Education School of Geography and Ocean ScienceNanjing UniversityNanjing 210023China School of Oceanography Shanghai Jiao Tong UniversityShanghai 200240China Department of Geology and Environmental Geosciences University of DaytonDayton OH 45469USA Laboratory of Environmental Chemistry Paul Scherrer InstituteVilligen PSI 5232Switzerland Oeschger Centre for Climate Change Research University of BernBern 3012Switzerland Frontiers Science Center for Critical Earth Material Cycling Nanjing UniversityNanjing 210023China

Understanding the impact of meltwater discharge during the final stage of the Laurentide Ice Sheet(LIS)has important implications for predicting sea level rise and climate *** we present a highresolution ice-core isotopic record from the central Tibetan Plateau(TP),where the climate is sensitive to the meltwater forcing,and explore possible signals of the climate response to potential LIS meltwater discharges in the early to *** record shows four abrupt large fluctuations during the 7–9 ka BP(kiloannum before present),reflecting large shifts of the mid-latitude westerlies and the Indian summer monsoon(ISM)over this period,and they corresponded to possible LIS freshwater events documented in other paleoclimate *** study suggests that multiple rapid meltwater discharge events might have occurred during the final stage of *** finding implies the possibility of rapid sea level rise and unstable climate in the transition zone between the mid-latitude westerlies and the ISM due to fast polar ice retreat under the anthropogenic global warming.

关键词： Tibetan Plateau Ice core Water isotopes Meltwater events Abrupt climate change

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青藏高原冰芯记录揭示早-中全新世发生多次融水事件（英文）

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Science Bulletin 2024年第3期 375-381页

作者：庞洪喜张王滨吴霜叶 Theo M.Jenk margit schwikowski 侯书贵 Key Laboratory of Coast and Island Development of Ministry of Education School of Geography and Ocean Science Nanjing University Frontiers Science Center for Critical Earth Material Cycling Nanjing University Department of Geology and Environmental Geosciences University of Dayton Laboratory of Environmental Chemistry Paul Scherrer Institute Oeschger Centre for Climate Change Research University of Bern School of Oceanography Shanghai Jiao Tong University

Understanding the impact of meltwater discharge during the final stage of the Laurentide Ice Sheet(LIS)has important implications for predicting sea level rise and climate change. Here we present a highresolution ice-core isotopic record from the central Tibetan Plateau(TP), where the climate is sensitive to the meltwater forcing, and explore possible signals of the climate response to potential LIS meltwater discharges in the early to mid-Holocene. The record shows four abrupt large fluctuations during the7–9 ka BP(kiloannum before present), reflecting large shifts of the mid-latitude westerlies and the Indian summer monsoon(ISM) over this period, and they corresponded to possible LIS freshwater events documented in other paleoclimate records. Our study suggests that multiple rapid meltwater discharge events might have occurred during the final stage of LIS. The finding implies the possibility of rapid sea level rise and unstable climate in the transition zone between the mid-latitude westerlies and the ISM due to fast polar ice retreat under the anthropogenic global warming.

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