DOI: 10.1016/j.palaeo.2016.08.006
论文题名: Reconstructing North Atlantic marine climate variability using an absolutely-dated sclerochronological network
作者: Reynolds D.J. ; Richardson C.A. ; Scourse J.D. ; Butler P.G. ; Hollyman P. ; Román-González A. ; Hall I.R.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2017
卷: 465 起始页码: 333
结束页码: 346
语种: 英语
英文关键词: Arctica islandica
; Glycymeris glycymeris
; North Atlantic
; Sclerochronology
; Spatial network
英文摘要: Reconstructing regional to hemispheric-scale climate variability requires the application of spatially representative and climatically sensitive proxy archives. Large spatial networks of dendrochronologies have facilitated the reconstruction of atmospheric variability and inferred variability in the Atlantic Ocean system. However, the marine environment has hitherto lacked the direct application of the spatial network approach because of the small number of individual absolutely-dated marine archives. In this study we present the first analyses of a network of absolutely-dated annually-resolved growth increment width chronologies from the marine bivalves Glycymeris glycymeris and Arctica islandica. The network contains eight chronologies spanning > 500 km along the western British continental shelf from the southern Irish Sea to North West Scotland. Correlation analysis of the individual chronologies and a suite of climate indices, including the Atlantic Multidecadal Oscillation (AMO), Central England surface air temperature (CET), northeast Atlantic sea surface temperatures (SST's) and the winter North Atlantic Oscillation (wNAO), demonstrates that, despite the large geographical distances been sites and the heterogeneous nature of the marine environment, the increment width variability in these series contains an element of coherence likely driven by a common response to changing environmental forcing. A nested Principal component analysis (PCA) was used to construct five composite series which explain between 31% and 74% of the variance across the individual chronologies. Linear regression analyses indicate that the composite series explain up to 41% of the variance in Northeast Atlantic SSTs over the calibration period (1975–2000). Calibration verification (reduction of error [RE] and coefficient of efficiency [CE]) statistics indicate that the composite series contains significant skill at reconstructing multi-decadal northeast Atlantic SST variability over the past two centuries (1805–2010). These data suggest that composite series derived from sclerochronology networks can facilitate the robust reconstruction of marine climate over past centuries to millennia providing invaluable baseline records of natural oceanographic variability. © 2016 The Authors Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68070
Appears in Collections: 过去全球变化的重建
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作者单位: School of Earth and Ocean Science, Cardiff University, Cardiff, United Kingdom; School of Ocean Sciences, College of Natural Science, Bangor University, Menai Bridge, Anglesey, United Kingdom
Recommended Citation:
Reynolds D.J.,Richardson C.A.,Scourse J.D.,et al. Reconstructing North Atlantic marine climate variability using an absolutely-dated sclerochronological network[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2017-01-01,465