globalchange  > 气候变化与战略
DOI: 10.1016/j.scib.2020.11.016
论文题名:
Possible obliquity-forced warmth in southern Asia during the last glacial stage
作者: Zhao C.; Rohling E.J.; Liu Z.; Yang X.; Zhang E.; Cheng J.; Liu Z.; An Z.; Yang X.; Feng X.; Sun X.; Zhang C.; Yan T.; Long H.; Yan H.; Yu Z.; Liu W.; Yu S.-Y.; Shen J.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2021
卷: 66, 期:11
起始页码: 1136
结束页码: 1145
语种: 英语
中文关键词: Annual temperature ; brGDGTs ; Lake sediments ; Obliquity forcing ; Southern Asia ; The last glacial stage
英文关键词: Atmospheric thermodynamics ; Incident solar radiation ; Orbits ; Climate simulation ; Climatic changes ; Global climatic changes ; High Latitudes ; Late quaternary ; Mean annual air temperatures ; Monsoon intensity ; Summer monsoon ; Glacial geology
英文摘要: Orbital-scale global climatic changes during the late Quaternary are dominated by high-latitude influenced ~100,000-year global ice-age cycles and monsoon influenced ~23,000-year low-latitude hydroclimate variations. However, the shortage of highly-resolved land temperature records remains a limiting factor for achieving a comprehensive understanding of long-term low-latitude terrestrial climatic changes. Here, we report paired mean annual air temperature (MAAT) and monsoon intensity proxy records over the past 88,000 years from Lake Tengchongqinghai in southwestern China. While summer monsoon intensity follows the ~23,000-year precession beat found also in previous studies, we identify previously unrecognized warm periods at 88,000–71,000 and 45,000–22,000 years ago, with 2–3 °C amplitudes that are close to our recorded full glacial-interglacial range. Using advanced transient climate simulations and comparing with forcing factors, we find that these warm periods in our MAAT record probably depends on local annual mean insolation, which is controlled by Earth's ~41,000-year obliquity cycles and is anti-phased to annual mean insolation at high latitudes. The coincidence of our identified warm periods and intervals of high-frequent dated archaeological evidence highlights the importance of temperature on anatomically modern humans in Asia during the last glacial stage. © 2020 Science China Press
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170514
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作者单位: State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China; Center for Excellence in Quaternary Science and Global Change, Chinese Academy of Sciences, Xi'an, 710061, China; School of Geography and Ocean Science, Nanjing University, Nanjing, 210023, China; Research School of Earth Sciences, the Australian National University, Canberra, ACT 2601, Australia; Ocean and Earth Science, University of Southampton, National Oceanography Centre, Southampton, SO14 3ZH, United Kingdom; Department of Geography, Ohio State University, Columbus, 43210, United States; Department of Earth Sciences, Sun Yat-sen University, Guangzhou, 510275, China; Laboratory of Meteorological Disaster, Ministry of Education (KLME)/Joint International Research Laboratory of Climate and Environment Change (ILCEC)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters (CIC-FEMD), Nanjing University of Information Science and Technology, Nanjing, 210044, China; Department of Earth Sciences, University of Hong Kong, Hong Kong, 999077, Hong Kong; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China; Department of Earth and Environmental Sciences, Lehigh University, Bethlehem, 18015, United States; Institute for Peat and Mire Research, School of Geographical Sciences, Northeast Normal University, Changchun, 130024, China; School of Geography, Geomatics, and Planning, Jiangsu Normal University, Xuzhou, 221116, China

Recommended Citation:
Zhao C.,Rohling E.J.,Liu Z.,et al. Possible obliquity-forced warmth in southern Asia during the last glacial stage[J]. Science Bulletin,2021-01-01,66(11)
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