Scopus记录号: 2-s2.0-85062602207
论文题名: Unstable Little Ice Age climate revealed by high-resolution proxy records from northwestern China
作者: Chen J. ; Liu J. ; Zhang X. ; Chen S. ; Huang W. ; Chen J. ; Zhang S. ; Zhou A. ; Chen F.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2019
语种: 英语
英文关键词: Climatic instability
; Little ice age
; Medieval warm period
; Northwestern China
英文摘要: Climatic instability, especially on decadal to multi-decadal time scales, has a profound impact on societal development and human welfare in semi-arid and arid regions. Previous work suggested that arid northwestern China was characterized by a dry Medieval Warm Period (MWP, from ca. 1000 to 1300 AD) and a wet Little Ice Age (LIA, from ca. 1400 to 1850 AD), but there is a lack of studies addressing the issue of climatic variability during the last millennium. Here, we present results from a diverse range of proxy records from northwestern China with the aim of evaluating the time variation of hydroclimatic variability during the MWP and LIA. Within the context of an overall cold climate, we detected a pattern of higher moisture variability during the LIA compared to the MWP. A comparison of the proxy records of climatic instability during the LIA from northwestern China with the major modes of SST and atmospheric variability, which affect moisture/precipitation in Asia, suggests that the instability of the North Atlantic Oscillation (NAO) from middle- to high-latitude regions during the LIA was a major driving factor. The westerlies may play an important role in linking the unstable climatic conditions observed in the above-mentioned regions. Our results support the concept that climatic instability was above the norm during cold periods, in contrast with present observations that demonstrate the occurrence of increasingly extreme climatic events with ongoing global warming. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature. 资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122519
Appears in Collections: 气候变化事实与影响
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作者单位: Key Laboratory of Western China’s Environmental Systems (Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, China; Center for Excellence in Tibetan Earth Science, Chinese Academy of Sciences, Beijing, 100085, China; School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, 210023, China; Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China
Recommended Citation:
Chen J.,Liu J.,Zhang X.,et al. Unstable Little Ice Age climate revealed by high-resolution proxy records from northwestern China[J]. Climate Dynamics,2019-01-01