DOI: 10.1016/j.quascirev.2012.10.003
Scopus记录号: 2-s2.0-84870200717
论文题名: Atmospheric dust from a shallow ice core from Tanggula: Implications for drought in the central Tibetan Plateau over the past 155 years
作者: Wu G. ; Zhang C. ; Xu B. ; Mao R. ; Joswiak D. ; Wang N. ; Yao T.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2013
卷: 59 起始页码: 57
结束页码: 66
语种: 英语
英文关键词: Climate warming
; Dust
; Ice core
; Tanggula
; Tibetan Plateau
Scopus关键词: Atmospheric dust
; Central Tibetan plateau
; Climate warming
; Cold conditions
; Composite analysis
; Dust flux
; Dust storm
; Environmental issues
; Grain size
; Ice core
; Little Ice Age
; Low oxygen
; Low pressures
; Meteorological data
; Potential source regions
; Strong winds
; Tanggula
; Tarim Basin
; Tibetan Plateau
; Time-scales
; Drought
; Dust
; Global warming
; Isotopes
; Storms
; Ice
; dust
; global warming
; grain size
; ice core
; Little Ice Age
; low pressure
; oxygen isotope
; paleoclimate
; temporal period
; timescale
; westerly
; data assimilation
; drought
; dust storm
; environmental issue
; meteorology
; pattern recognition
; China
; Qinghai-Xizang Plateau
; Tanggula Mountains
; Tarim Basin
; Xinjiang Uygur
; Xizang
英文摘要: The dustiness on the remote Tibetan Plateau and its trend within the ongoing global warming perspective are not well understood. In this study, we present the detailed dust history from 1850 to 2004 AD on an annual timescale from a shallow ice core from Tanggula, central Tibetan Plateau. Two periods of strong dustiness, one at the end of the Little Ice Age (1860-1874) and the other during the period 1930-1954, occurred during low oxygen isotope stage, which is correlated with temperature on multi-year and decadal timescales. The extremely high level of dust flux between 1860 and 1874 was unique - this level has not occurred again during the past century, and the 1930s' dustiness was characterized more by strong wind and dust storms rather than drought, as shown by great grain size but low dust flux. We have used the composite analysis of modern meteorological data to study the possible dustiness mechanism and found that strengthened high-level westerlies over the Tibetan Plateau and intensified low pressure activities in the upward potential source regions, such as Tarim Basin, are the possible causes for high dust flux in Tanggula. Those results have revealed that although the dustiness on the Tibetan Plateau normally occurs in cold conditions, pronounced warming since the 1960s can change the dust pattern and strengthen the dustiness in this remote and high-altitude region, and can thus induce associated environmental issues by creating dustier conditions. © 2012 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60754
Appears in Collections: 过去全球变化的重建
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作者单位: Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China; State Key Laboratory of Cryospheric Science, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China; State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing 100875, China
Recommended Citation:
Wu G.,Zhang C.,Xu B.,et al. Atmospheric dust from a shallow ice core from Tanggula: Implications for drought in the central Tibetan Plateau over the past 155 years[J]. Quaternary Science Reviews,2013-01-01,59