DOI: 10.1016/j.quascirev.2015.07.024
Scopus记录号: 2-s2.0-84938303868
论文题名: Seasonal temperature and precipitation recorded in the intra-annual oxygen isotope pattern of meteoric water and tree-ring cellulose
作者: Schubert B.A. ; Jahren A.H.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2015
卷: 125 起始页码: 1
结束页码: 14
语种: 英语
英文关键词: Cellulose
; Fossil wood
; Meteoric water
; Oxygen isotopes
; Paleoclimate
; Seasonality
; Tree rings
Scopus关键词: Cells
; Cellulose
; Climate models
; Cytology
; Forestry
; Isotopes
; Oxygen
; Fossil woods
; Meteoric waters
; Oxygen isotopes
; Paleoclimates
; Seasonality
; Tree rings
; Wood
; carbon isotope
; cellulose
; climate variation
; data set
; ecological modeling
; environmental conditions
; fossil record
; geochronology
; isotopic composition
; measurement method
; meteoric water
; oxygen isotope
; paleoclimate
; precipitation (climatology)
; seasonal variation
; seasonality
; temperature effect
; tree ring
; Cellulose
; Isotopes
; Wood
英文摘要: Modern and ancient wood is a valuable terrestrial record of carbon ultimately derived from the atmosphere and oxygen inherited from local meteoric water. Many modern and fossil wood specimens display rings sufficiently thick for intra-annual sampling, and analytical techniques are rapidly improving to allow for precise carbon and oxygen isotope measurements on very small samples, yielding unprecedented resolution of seasonal isotope records. However, the interpretation of these records across diverse environments has been problematic because a unifying model for the quantitative interpretation of seasonal climate parameters from oxygen isotopes in wood is lacking. Towards such a model, we compiled a dataset of intra-ring oxygen isotope measurements on modern wood cellulose (δ18Ocell ) from 33 globally distributed sites. Five of these sites represent original data produced for this study, while the data for the other 28 sites were taken from the literature. We defined the intra-annual change in oxygen isotope value of wood cellulose [Δ(δ18Ocell )] as the difference between the maximum and minimum δ18Ocell values determined within the ring. Then, using the monthly-resolved dataset of the oxygen isotope composition of meteoric water (Δ18OMW ) provided by the Global Network of Isotopes in Precipitation database, we quantified the empirical relationship between the intra-annual change in meteoric water [Δ(δ18OMW )] and Δ(δ18Ocell ). We then used monthly-resolved datasets of temperature and precipitation to develop a global relationship between Δ(δ18OMW ) and maximum/minimum monthly temperatures and winter/summer precipitation amounts. By combining these relationships we produced a single equation that explains much of the variability in the intra-ring δ18Ocell signal through only changes in seasonal temperature and precipitation amount (R2=0.82). We show how our recent model that quantifies seasonal precipitation from intra-ring carbon isotope profiles can be incorporated into the oxygen model above in order to separately quantify both seasonal temperature and seasonal precipitation. Determination of seasonal climate variation using high-resolution isotopes in tree-ring records makes possible a new understanding of the seasonal fluctuations that control the environmental conditions to which organisms are subject, both during recent history and in the geologic past. © 2015 Elsevier Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59830
Appears in Collections: 过去全球变化的重建
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作者单位: School of Geosciences, University of Louisiana at Lafayette, 611 McKinley St, Box 43705, Lafayette, LA, United States; Department of Geology and Geophysics, University of Hawaii at Manoa, 1680 East-West Road, POST 701, Honolulu, HI, United States
Recommended Citation:
Schubert B.A.,Jahren A.H.. Seasonal temperature and precipitation recorded in the intra-annual oxygen isotope pattern of meteoric water and tree-ring cellulose[J]. Quaternary Science Reviews,2015-01-01,125