气候变化领域集成服务门户(CCPortal): One Thousand Three Hundred Years of Variability in the Position of the South Pacific Convergence Zone

CCPortal

DOI	10.1029/2020GL088238
	One Thousand Three Hundred Years of Variability in the Position of the South Pacific Convergence Zone
	Higgins P.A.; Palmer J.G.; Turney C.S.M.; Andersen M.S.; Cook E.R.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:17
英文摘要	The South Pacific Convergence Zone (SPCZ) is the largest rain belt in the Southern Hemisphere and a key driver of precipitation variability, impacting South Pacific island communities. Our millennial-long reconstruction is based on a trans-Pacific tree-ring network, containing chronologies sensitive to changes in the SPCZ because of its pervasive nature, spatial extent, and link to the El Niño-Southern Oscillation. The reconstruction explains 58% of variance in the instrumental SPCZ index from 1911–1998. El Niño-Southern Oscillation cycles are identified throughout the reconstruction period. Multidecadal periodicities wax and wane, coinciding with a sustained eastward shift during the Medieval Climate Anomaly (~1,000–1,200 CE). We find large volcanic eruptions increased the tendency for the SPCZ to be displaced eastward. The reconstruction helps improve our understanding of past hydroclimatic behavior in the southwest Pacific and can be used to validate general circulation model projections for Pacific Island communities and the wider region in the 21st century. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Atmospheric pressure; Rain; Volcanoes; General circulation model; Medieval climate anomalies; Precipitation variability; Reconstruction period; South pacific convergence zones; South Pacific islands; Southern Hemisphere; Southern oscillation; Salinity measurement; chronology; El Nino-Southern Oscillation; general circulation model; hydrometeorology; Medieval Warm Period; precipitation (climatology); reconstruction; Southern Hemisphere; volcanic eruption; Pacific islands; Pacific Ocean; Pacific Ocean (South)
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169796
作者单位	Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Kensington, NSW, Australia; ARC Centre of Excellence in Australian Biodiversity and Heritage, University of New South Wales, Kensington, NSW, Australia; Chronos 14Carbon-Cycle Facility, Mark Wainwright Analytical Centre, University of New South Wales, Kensington, NSW, Australia; Water Research Laboratory, School of Civil and Environmental Engineering, University of New South Wales, Kensington, NSW, Australia; Tree-ring Laboratory, Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, United States
推荐引用方式 GB/T 7714	Higgins P.A.,Palmer J.G.,Turney C.S.M.,et al. One Thousand Three Hundred Years of Variability in the Position of the South Pacific Convergence Zone[J],2020,47(17).
APA	Higgins P.A.,Palmer J.G.,Turney C.S.M.,Andersen M.S.,&Cook E.R..(2020).One Thousand Three Hundred Years of Variability in the Position of the South Pacific Convergence Zone.Geophysical Research Letters,47(17).
MLA	Higgins P.A.,et al."One Thousand Three Hundred Years of Variability in the Position of the South Pacific Convergence Zone".Geophysical Research Letters 47.17(2020).