气候变化领域集成服务门户(CCPortal): Postbomb Subtropical North Pacific Surface Water Radiocarbon History

CCPortal

DOI	10.1029/2020JC016881
	Postbomb Subtropical North Pacific Surface Water Radiocarbon History
	Guilderson T.P.; Schrag D.P.; Druffel E.R.M.; Reimer R.W.
发表日期	2021
ISSN	21699275
卷号	126 期号:2
英文摘要	We have generated a high-resolution coral Δ14C record from the leeward side of the Big Island of Hawai’i in the subtropical North Pacific. The record spans 1947–1992, when the coral was collected, and includes a brief prebomb interval as well as the postbomb era. Mean prebomb (1947–1954) values average −55‰ (±1, SE of the mean) with a clear seasonal cycle. Values are less positive during winter when vertical exchange mixes surface and lower-14C subsurface waters. The postbomb annual maximum occurs in 1971 (+160‰) and decreases in a series of shifts to +105‰ in 1991, the end of our coral-based reconstruction. The decrease is not monotonic and has inflection points during the La Niña years of 1973, 1977, and 1984. Imbedded in the Δ14C record is interannual variability in the El Nino-Southern Oscillation band which is interpreted to reflect the lateral advection of low latitude surface waters as part of the oceanic Hadley Cell driven by Sverdrup dynamics. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	air-sea CO2 exchange; North Pacific Gyre; radiocarbon; surface water exchange
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186489
作者单位	Ocean Sciences Department, University of California, Santa Cruz, CA, United States; Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA, United States; Department of Earth System Science, University of California, Irvine, CA, United States; CHRONO Centre, Queen's University, Belfast, United Kingdom
推荐引用方式 GB/T 7714	Guilderson T.P.,Schrag D.P.,Druffel E.R.M.,et al. Postbomb Subtropical North Pacific Surface Water Radiocarbon History[J],2021,126(2).
APA	Guilderson T.P.,Schrag D.P.,Druffel E.R.M.,&Reimer R.W..(2021).Postbomb Subtropical North Pacific Surface Water Radiocarbon History.Journal of Geophysical Research: Oceans,126(2).
MLA	Guilderson T.P.,et al."Postbomb Subtropical North Pacific Surface Water Radiocarbon History".Journal of Geophysical Research: Oceans 126.2(2021).