气候变化领域集成服务门户(CCPortal): Atmospheric 81Kr as an Integrator of Cosmic-Ray Flux on the Hundred-Thousand-Year Time Scale

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DOI	10.1029/2019GL086381
	Atmospheric 81Kr as an Integrator of Cosmic-Ray Flux on the Hundred-Thousand-Year Time Scale
	Zappala J.C.; Baggenstos D.; Gerber C.; Jiang W.; Kennedy B.M.; Lu Z.-T.; Masarik J.; Mueller P.; Purtschert R.; Visser A.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:3
英文摘要	The atmospheric abundance of 81Kr is a global integrator of cosmic rays. It is insensitive to climate shifts, geographical variations, and short-term solar cycle activity, making it an ideal standard to test models of cosmic-ray flux on the time scale of 105 years. Here we present the first calculation of absolute 81Kr production rates in the atmosphere, and a measurement of the atmospheric 81Kr/Kr abundance via the Atom Trap Trace Analysis method. The measurement result significantly deviates from previously reported values. The agreement between measurement and model prediction supports the current understanding of the production mechanisms. Additionally, the calculated 81Kr atmospheric inventory over the past 1.5 Myr provides a more accurate input function for radiokrypton dating. ©2020. American Geophysical Union. All Rights Reserved. This article has been contributed to by US Government employees and their work is in the public domain in the USA.
英文关键词	Climate models; Cosmic rays; Solar energy; Trace analysis; Atmospheric abundance; Atom trap; Geographical variations; Input functions; Model prediction; Production mechanisms; Production rates; radiokrypton dating; Cosmology; climate change; cosmic ray; dating method; geographical variation; measurement method; solar cycle; Iran; Ray; Tehran [Iran]
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/170808
作者单位	Physics Division, Argonne National Laboratory, Lemont, IL, United States; Climate and Environmental Physics, Physics Institute and Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland; CSIRO Land and Water, Glen Osmond, SA, Australia; Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China; Earth Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, United States; Department of Nuclear Physics, Comenius University, Bratislava, Slovakia; Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory, Livermore, CA, United States
推荐引用方式 GB/T 7714	Zappala J.C.,Baggenstos D.,Gerber C.,et al. Atmospheric 81Kr as an Integrator of Cosmic-Ray Flux on the Hundred-Thousand-Year Time Scale[J],2020,47(3).
APA	Zappala J.C..,Baggenstos D..,Gerber C..,Jiang W..,Kennedy B.M..,...&Visser A..(2020).Atmospheric 81Kr as an Integrator of Cosmic-Ray Flux on the Hundred-Thousand-Year Time Scale.Geophysical Research Letters,47(3).
MLA	Zappala J.C.,et al."Atmospheric 81Kr as an Integrator of Cosmic-Ray Flux on the Hundred-Thousand-Year Time Scale".Geophysical Research Letters 47.3(2020).