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A monsoon-related 174-year relative humidity record from tree-ring delta O-18 in the Yaoshan region, eastern central China
Liu, Yu1,3,4; Liu, Han1,2; Song, Huiming1; Li, Qiang1; Burr, George S.1; Wang, Lu1,2; Hu, Sile1,2
2017-09-01
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
Volume593-594Issue:2017Pages:523-534
SubtypeArticle
AbstractThe authors present a time series of tree-ring cellulose stable oxygen isotope ratios (delta O-18) constructed using a numerical mixing method, from five Pinus tabulaeformis from Yaoshan, eastern central China. The time series is synchronous with the observed April-to-September precipitation delta O-18 time series records from surrounding stations, implying that the tree-ring delta O-18 signals reflect Asian summer monsoon-related precipitation. Moreover, significant correlations were detected between the tree-ring delta O-18 records and central-eastern Pacific sea surface temperature (SSTs)/Asian summer monsoon indices. This suggests that the Yaoshan tree-ring delta O-18 time series offers a promising means to study past Asian summer monsoons and ENSO variability. The time series is significantly correlated with the mean relative humidity from April to September (RHAS) (r = 0.638, n = 52, p < 0.0001) over the Yaoshan region. The authors assign a transfer function to the reconstruct the RHAS time series from 1835 to 2008. The mean value of RHAS over the period 1870-1890 is the lowest observed value during the past 174 years, implying severe drought at that time. From 1930 to 2008, an obvious drying trend in the Yaoshan region is observed. Particularly from 1985 to 2008, frequent, extremely dry years occurred, with few extremely wet years. The drying trend is consistent with decreasing Asian summer monsoon precipitation over the Loess Plateau over the past 60 years. The acidification implied by this data extends well beyond the vicinity of Yaoshan and may be expected to impact the entire monsoonal region in northern China. A multi-taper spectral analysis and an ensemble empirical mode decomposition EEMD of the time series indicate 14.6-12.4 and 6.4-2.3 year cycles in the reconstructed RHAS time series during the past 174 years, which correspond with solar cycles and ENSO cycles, respectively. (C) 2017 Elsevier B.V. All rights reserved.
KeywordTree-ring Delta O-18 Yaoshan Relative Humidity China Asian Summer Monsoon
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1016/j.scitotenv.2017.03.198
WOS KeywordNORTHEASTERN TIBETAN PLATEAU ; ANNUAL PRECIPITATION ; NORTHWEST CHINA ; CLIMATE-CHANGE ; DROUGHT VARIABILITY ; QILIAN MOUNTAINS ; SUMMER MONSOON ; ISOTOPE RATIOS ; INNER-MONGOLIA ; ASIAN CLIMATE
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000401201800054
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5475
Collection现代环境研究室
Affiliation1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Dept Environm Sci & Technol, Xian 710049, Peoples R China
4.Beijing Normal Univ, Joint Ctr Global Change Studies, Beijing 100875, Peoples R China
Recommended Citation
GB/T 7714
Liu, Yu,Liu, Han,Song, Huiming,et al. A monsoon-related 174-year relative humidity record from tree-ring delta O-18 in the Yaoshan region, eastern central China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2017,593-594(2017):523-534.
APA Liu, Yu.,Liu, Han.,Song, Huiming.,Li, Qiang.,Burr, George S..,...&Hu, Sile.(2017).A monsoon-related 174-year relative humidity record from tree-ring delta O-18 in the Yaoshan region, eastern central China.SCIENCE OF THE TOTAL ENVIRONMENT,593-594(2017),523-534.
MLA Liu, Yu,et al."A monsoon-related 174-year relative humidity record from tree-ring delta O-18 in the Yaoshan region, eastern central China".SCIENCE OF THE TOTAL ENVIRONMENT 593-594.2017(2017):523-534.
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