DOI: 10.5194/cp-10-1319-2014
Scopus记录号: 2-s2.0-85006934354
论文题名: Persistent decadal-scale rainfall variability in the tropical South Pacific Convergence Zone through the past six centuries
作者: Maupin C.R. ; Partin J.W. ; Shen C-C. ; Quinn T.M. ; Lin K. ; Taylor F.W. ; Banner J.L. ; Thirumalai K. ; Sinclair D.J.
刊名: Climate of the Past
ISSN: 18149324
出版年: 2014
卷: 10, 期: 4 起始页码: 1319
结束页码: 1332
语种: 英语
英文摘要: Modern Pacific decadal variability (PDV) has global impacts; hence records of PDV from the preinstrumental period are needed to better inform models that are used to project future climate variability. We focus here on reconstructing rainfall in the western tropical Pacific (Solomon Islands; ∼9.5∼ S, ∼160∼ E), a region directly influenced by PDV, using cave deposits (stalagmite). A relationship is developed between δ18O variations in the stalagmite and local rainfall amount to produce a 600 yr record of rainfall variability from the South Pacific Convergence Zone (SPCZ). We present evidence for large (∼1.5 m), abrupt, and periodic changes in total annual rainfall amount on decadal to multidecadal timescales since 1423±5 CE (Common Era) in the Solomon Islands. The timing of the decadal changes in rainfall inferred from the 20th-century portion of the stalagmite δ18O record coincides with previously identified decadal shifts in PDV-related Pacific ocean-atmosphere behavior (Clement et al., 2011; Deser et al., 2004). The Solomons record of PDV is not associated with variations in external forcings, but rather results from internal climate variability. The 600 yr Solomon Islands stalagmite δ18O record indicates that decadal oscillations in rainfall are a persistent characteristic of SPCZ-related climate variability. © Author(s) 2014. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49332
Appears in Collections: 气候变化与战略
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Recommended Citation:
Maupin C.R.,Partin J.W.,Shen C-C.,et al. Persistent decadal-scale rainfall variability in the tropical South Pacific Convergence Zone through the past six centuries[J]. Climate of the Past,2014-01-01,10(4)