DOI: 10.1016/j.quascirev.2018.06.008
Scopus记录号: 2-s2.0-85049056381
论文题名: Separating temperature from precipitation signals encoded in tree-ring widths over the past millennium on the northeastern Tibetan Plateau, China
作者: Liu W. ; Gou X. ; Li J. ; Huo Y. ; Yang M. ; Lin W.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2018
卷: 193 起始页码: 159
结束页码: 169
语种: 英语
英文关键词: Asian summer monsoon
; Climate signal separation
; Northeastern Tibetan Plateau
; Temperature reconstruction
; Tree-ring width
Scopus关键词: Atmospheric temperature
; Atmospheric thermodynamics
; Forestry
; Asian summer monsoons
; Climate signals
; Northeastern tibetan plateaux
; Temperature reconstruction
; Tree-ring width
; Repair
; chronology
; dicotyledon
; forest ecosystem
; growth
; monsoon
; Northern Hemisphere
; paleotemperature
; precipitation (climatology)
; reconstruction
; summer
; tectonic reconstruction
; tree
; tree ring
; China
; Qinghai-Xizang Plateau
; Juniperus
英文摘要: Tree-ring width chronologies from the upper timberline are an important material to reconstruct past temperature variability on the northeastern Tibetan Plateau (NTP). However, precipitation signals are often encoded in the upper timberline chronologies, which complicate the temperature reconstructions and should be removed properly. Here, we propose to use the chronologies from the middle to lower forest zones to remove the precipitation signals encoded in the upper timberline chronologies on the NTP, as tree growth at the two elevation zones records similar precipitation signals but has different temperature responses. We compiled a dataset of 13 Qilian juniper (Sabina przewalskii Kom.) tree-ring width chronologies, and employed two independent methods to develop millennial (AD 1000–2000) temperature reconstructions on the NTP. The two reconstructions are very consistent with each other over the past millennium, with a correlation of 0.97, and account for more than 50% of the observed temperature variance during 1958–2000. Both reconstructions contain little precipitation signals, suggesting that we have extracted purer temperature information than before. Our reconstructions show similar warm-cold patterns to the temperature records from the surrounding areas, indicating that they are capable of representing large-scale temperature variability during the past millennium. Comparison of our reconstructions with five millennial Northern Hemisphere (NH) temperature series indicates that temperature changes on the NTP are generally distinct from the NH temperature patterns except for the long-term trend during the past millennium, suggesting specific characteristics of regional temperature variability. The distinct variations may be related to the influence of local precipitation, which generally has inverse variations with the temperature on multi-decadal timescales. Our results also show that temperature variability on the NTP has a strong linkage with the strength of the Indian summer monsoon (ISM), with the warm and cool phases of NTP temperature associated with strong and weak ISM, respectively. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112126
Appears in Collections: 气候减缓与适应
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作者单位: State Key Laboratory of Cryospheric Sciences, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China; Key Laboratory of Western China's Environmental Systems (MOE), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, China; Department of Geography, University of Hong Kong, Pokfulam, Hong Kong
Recommended Citation:
Liu W.,Gou X.,Li J.,et al. Separating temperature from precipitation signals encoded in tree-ring widths over the past millennium on the northeastern Tibetan Plateau, China[J]. Quaternary Science Reviews,2018-01-01,193