Статья

East Asian summer monsoon precipitation variability since the last deglaciation

Fahu ChenMOE Key Laboratory of Western China's Environmental System, Lanzhou University, Lanzhou 730000, ChinaQinghai XuInstitute of Nihewan Archaeology Research, College of Resources and Environment, Hebei Normal University, Shijiazhuang 050024, ChinaJianhui ChenMOE Key Laboratory of Western China's Environmental System, Lanzhou University, Lanzhou 730000, ChinaH. J. B. Birks1] Department of Biology and Bjerknes Centre for Climate Research, University of Bergen, N-5020 Bergen, Norway [2] Environmental Change Research Centre, University College London, London WC1E 6BT, UK; and School of Geography and the Environment, University of Oxford, Oxford OX1 3QY, UKJianbao LiuMOE Key Laboratory of Western China's Environmental System, Lanzhou University, Lanzhou 730000, ChinaShengrui ZhangInstitute of Nihewan Archaeology Research, College of Resources and Environment, Hebei Normal University, Shijiazhuang 050024, ChinaLiya JinMOE Key Laboratory of Western China's Environmental System, Lanzhou University, Lanzhou 730000, ChinaChengbang AnMOE Key Laboratory of Western China's Environmental System, Lanzhou University, Lanzhou 730000, ChinaRichard J. TelfordDepartment of Biology and Bjerknes Centre for Climate Research, University of Bergen, N-5020 Bergen, NorwayXianyong CaoInstitute of Nihewan Archaeology Research, College of Resources and Environment, Hebei Normal University, Shijiazhuang 050024, ChinaZongli WangMOE Key Laboratory of Western China's Environmental System, Lanzhou University, Lanzhou 730000, ChinaXiaojian ZhangMOE Key Laboratory of Western China's Environmental System, Lanzhou University, Lanzhou 730000, ChinaK. SelvarajState Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, ChinaHouyuan LuKey Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, ChinaYuecong LiInstitute of Nihewan Archaeology Research, College of Resources and Environment, Hebei Normal University, Shijiazhuang 050024, ChinaZhuo ZhengDepartment of Earth Sciences, Sun Yat-Sen University, Guangzhou 510275, ChinaHaipeng WangMOE Key Laboratory of Western China's Environmental System, Lanzhou University, Lanzhou 730000, ChinaAifeng ZhouMOE Key Laboratory of Western China's Environmental System, Lanzhou University, Lanzhou 730000, ChinaGuanghui DongMOE Key Laboratory of Western China's Environmental System, Lanzhou University, Lanzhou 730000, ChinaJiawu ZhangMOE Key Laboratory of Western China's Environmental System, Lanzhou University, Lanzhou 730000, ChinaXiaozhong HuangMOE Key Laboratory of Western China's Environmental System, Lanzhou University, Lanzhou 730000, ChinaJan BloemendalDepartment of Geography and Planning, University of Liverpool, Liverpool L69 3BX, UKZhiguo RaoMOE Key Laboratory of Western China's Environmental System, Lanzhou University, Lanzhou 730000, China

2015en

ABI

Аннотация

The lack of a precisely-dated, unequivocal climate proxy from northern China, where precipitation variability is traditionally considered as an East Asian summer monsoon (EASM) indicator, impedes our understanding of the behaviour and dynamics of the EASM. Here we present a well-dated, pollen-based, ~20-yr-resolution quantitative precipitation reconstruction (derived using a transfer function) from an alpine lake in North China, which provides for the first time a direct record of EASM evolution since 14.7 ka (ka = thousands of years before present, where the "present" is defined as the year AD 1950). Our record reveals a gradually intensifying monsoon from 14.7-7.0 ka, a maximum monsoon (30% higher precipitation than present) from ~7.8-5.3 ka, and a rapid decline since ~3.3 ka. These insolation-driven EASM trends were punctuated by two millennial-scale weakening events which occurred synchronously to the cold Younger Dryas and at ~9.5-8.5 ka, and by two centennial-scale intervals of enhanced (weakened) monsoon during the Medieval Warm Period (Little Ice Age). Our precipitation reconstruction, consistent with temperature changes but quite different from the prevailing view of EASM evolution, points to strong internal feedback processes driving the EASM, and may aid our understanding of future monsoon behaviour under ongoing anthropogenic climate change.

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Идентификаторы

DOI: 10.1038/srep11186

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar