DOI: 10.1007/s00382-017-3718-6
Scopus记录号: 2-s2.0-85019187170
论文题名: Tree-ring stable carbon isotope-based April–June relative humidity reconstruction since ad 1648 in Mt. Tianmu, China
作者: Liu Y. ; Ta W. ; Li Q. ; Song H. ; Sun C. ; Cai Q. ; Liu H. ; Wang L. ; Hu S. ; Sun J. ; Zhang W. ; Li W.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2018
卷: 50, 期: 2018-05-06 起始页码: 1733
结束页码: 1745
语种: 英语
英文关键词: Asian summer monsoon
; Cryptomeria fortunei
; Mt. Tianmu, China
; Relative humidity
; Tree-ring δ13C
Scopus关键词: carbon isotope
; coniferous tree
; monsoon
; paleoclimate
; reconstruction
; relative humidity
; sea surface temperature
; stable isotope
; summer
; tree ring
; China
; Indian Ocean
; Pacific Ocean
; Pacific Ocean (Equatorial)
; Tianmu Mountains
; Cryptomeria fortunei
英文摘要: Based on accurate dating, we have determined the stable carbon isotope ratios (δ13C) of five Cryptomeria fortunei specimens from Mt. Tianmu, a subtropical area in southern China. The five δ13C time series records are combined into a single representative δ13C time series using a “numerical mix method.” These are normalized to remove temporal variations of δ13 C in atmospheric CO2 to obtain a carbon isotopic discrimination (Δ13C) time series, in which we observe a distinct correlation between Δ13C and local April to June mean relative humidity (RHAMJ) (n = 64, r = 0.858, p OpenSPiltSPi 0.0001). We use this relationship to reconstruct RHAMJ variations from ad 1648 to 2014 at Mt. Tianmu. The reconstructed sequence show that over the past 367 years, Mt. Tianmu area was relatively wet, but in the latter part of the twentieth century, under the influence of increasing global warming, it has experienced a sharp reduction in relative humidity. Spatial correlation analysis reveals a significant negative correlation between RHAMJ at Mt. Tianmu and Sea Surface Temperature (SSTs) in the western equatorial Pacific and Indian Ocean. In other words, there is a positive correlation between tree-ring δ13C in Mt. Tianmu and SSTs. Both observed and reconstructed RHAMJ show significant positive correlations with East Asian and South Asian monsoons from 1951 to 2014, which indicate that RHAMJ from Mt. Tianmu reflects the variability of the Asian summer monsoon intensity to a great extent. The summer monsoon has weakened since 1960. However, an increase in relative humidity since 2003 implies a recent enhancement in the summer monsoon. © 2017, Springer-Verlag Berlin Heidelberg. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109426
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: The State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, 710061, China; University of Chinese Academy of Science, Beijing, 100049, China; Joint Center for Global Change Studies (JCGCS), Beijing Normal University, Beijing, 100875, China; Department of Environmental Science and Technology, School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, Xi’an, 710049, China; Shaanxi Appraisal Center for Environmental Engineering, Xi’an, 710065, China; Zhejiang Agriculture and Forestry University, Zhejiang, 311300, China
Recommended Citation:
Liu Y.,Ta W.,Li Q.,et al. Tree-ring stable carbon isotope-based April–June relative humidity reconstruction since ad 1648 in Mt. Tianmu, China[J]. Climate Dynamics,2018-01-01,50(2018-05-06)