DOI: 10.1007/s00382-015-2559-4
Scopus记录号: 2-s2.0-84947485756
论文题名: Oxygen stable isotope ratios from British oak tree-rings provide a strong and consistent record of past changes in summer rainfall
作者: Young G.H.F. ; Loader N.J. ; McCarroll D. ; Bale R.J. ; Demmler J.C. ; Miles D. ; Nayling N.T. ; Rinne K.T. ; Robertson I. ; Watts C. ; Whitney M.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2015
卷: 45, 期: 2017-11-12 起始页码: 3609
结束页码: 3622
语种: 英语
英文关键词: Precipitation
; Stable isotopes
; Temperature
; Tree-rings
; UK
英文摘要: United Kingdom (UK) summers dominated by anti-cyclonic circulation patterns are characterised by clear skies, warm temperatures, low precipitation totals, low air humidity and more enriched oxygen isotope ratios (δ18O) in precipitation. Such conditions usually result in relatively more positive (enriched) oxygen isotope ratios in tree leaf sugars and ultimately in the tree-ring cellulose formed in that year, the converse being true in cooler, wet summers dominated by westerly air flow and cyclonic conditions. There should therefore be a strong link between tree-ring δ18O and the amount of summer precipitation. Stable oxygen isotope ratios from the latewood cellulose of 40 oak trees sampled at eight locations across Great Britain produce a mean δ18O chronology that correlates strongly and significantly with summer indices of total shear vorticity, surface air pressure, and the amount of summer precipitation across the England and Wales region of the United Kingdom. The isotope-based rainfall signal is stronger and much more stable over time than reconstructions based upon oak ring widths. Using recently developed methods that are precise, efficient and highly cost-effective it is possible to measure both carbon (δ13C) and oxygen (δ18O) isotope ratios simultaneously from the same tree-ring cellulose. In our study region, these two measurements from multiple trees can be used to reconstruct summer temperature (δ13C) and summer precipitation (δ18O) with sufficient independence to allow the evolution of these climate parameters to be reconstructed with high levels of confidence. The existence of long, well-replicated oak tree-ring chronologies across the British Isles mean that it should now be possible to reconstruct both summer temperature and precipitation over many centuries and potentially millennia. © 2015, Springer-Verlag Berlin Heidelberg. 资助项目: Leverhulme Trust
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53923
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Geography, College of Science, Swansea University, Singleton Park, Swansea, United Kingdom; Department of Archaeology, History and Anthropology, University of Wales Trinity Saint David, Lampeter, Ceredigion, United Kingdom; Research Laboratory for Archaeology and the History of Art, Oxford University, Oxford, United Kingdom; Paul Scherrer Institute, Villigen, Switzerland; The National Botanic Garden of Wales, Llanarthne, Carmarthen, United Kingdom
Recommended Citation:
Young G.H.F.,Loader N.J.,McCarroll D.,et al. Oxygen stable isotope ratios from British oak tree-rings provide a strong and consistent record of past changes in summer rainfall[J]. Climate Dynamics,2015-01-01,45(2017-11-12)