DOI: 10.1002/2016GL071507
论文题名: What drives interannual variation in tree ring oxygen isotopes in the Amazon?
作者: Baker J.C.A. ; Gloor M. ; Spracklen D.V. ; Arnold S.R. ; Tindall J.C. ; Clerici S.J. ; Leng M.J. ; Brienen R.J.W.
刊名: Geophysical Research Letters
ISSN: 0094-8406
EISSN: 1944-8137
出版年: 2016
卷: 43, 期: 22 起始页码: 11831
结束页码: 11840
语种: 英语
英文关键词: atmospheric transport
; dendrochronology
; paleoclimate
; trajectories
; tropics
Scopus关键词: Climatology
; Forestry
; Isotopes
; Trajectories
; Tropics
; Atmospheric back-trajectories
; Atmospheric circulation
; Atmospheric transport
; dendrochronology
; Paleoclimate reconstruction
; Paleoclimates
; Satellite observations
; Water vapor transport
; Precipitation (meteorology)
英文摘要: Oxygen isotope ratios in tree rings (δ18OTR) from northern Bolivia record local precipitation δ18O and correlate strongly with Amazon basin-wide rainfall. While this is encouraging evidence that δ18OTR can be used for paleoclimate reconstructions, it remains unclear whether variation in δ18OTR is truly driven by within-basin processes, thus recording Amazon climate directly, or if the isotope signal may already be imprinted on incoming vapor, perhaps reflecting a pan-tropical climate signal. We use atmospheric back trajectories combined with satellite observations of precipitation, together with water vapor transport analysis to show that δ18OTR in Bolivia are indeed controlled by basin-intrinsic processes, with rainout over the basin the most important factor. Furthermore, interannual variation in basin-wide precipitation and atmospheric circulation are both shown to affect δ18OTR. These findings suggest δ18OTR can be reliably used to reconstruct Amazon precipitation and have implications for the interpretation of other paleoproxy records from the Amazon basin. ©2016. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85004098308&doi=10.1002%2f2016GL071507&partnerID=40&md5=0198bf6400cce326d454cb44fd6880f6
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9369
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: School of Geography, University of Leeds, Leeds, United Kingdom
Recommended Citation:
Baker J.C.A.,Gloor M.,Spracklen D.V.,et al. What drives interannual variation in tree ring oxygen isotopes in the Amazon?[J]. Geophysical Research Letters,2016-01-01,43(22).