气候变化领域集成服务门户(CCPortal): The Implications of Temporal Variability in Wave-Particle Interactions in Earth's Radiation Belts

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DOI	10.1029/2020GL089962
	The Implications of Temporal Variability in Wave-Particle Interactions in Earth's Radiation Belts
	Watt C.E.J.; Allison H.J.; Thompson R.L.; Bentley S.N.; Meredith N.P.; Glauert S.A.; Horne R.B.; Rae I.J.
发表日期	2021
ISSN	0094-8276
卷号	48 期号:1
英文摘要	Changes in electron flux in Earth's outer radiation belt can be modeled using a diffusion-based framework. Diffusion coefficients D for such models are often constructed from statistical averages of observed inputs. Here, we use stochastic parameterization to investigate the consequences of temporal variability in D. Variability time scales are constrained using Van Allen Probe observations. Results from stochastic parameterization experiments are compared with experiments using D constructed from averaged inputs and an average of observation-specific D. We find that the evolution and final state of the numerical experiment depends upon the variability time scale of D; experiments with longer variability time scales differ from those with shorter time scales, even when the time-integrated diffusion is the same. Short variability time scale experiments converge with solutions obtained using an averaged observation-specific D, and both exhibit greater diffusion than experiments using the averaged-input D. These experiments reveal the importance of temporal variability in radiation belt diffusion. © 2020. The Authors.
英文关键词	Radiation belts; Stochastic systems; Time measurement; Earth's radiation belts; Electron flux; Final state; Numerical experiments; Outer radiation belt; Statistical average; Temporal variability; Wave-particle interactions; Diffusion
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/169263
作者单位	Department of Meteorology, University of ReadingReading, United Kingdom; Department of Mathematics, Physics and Electrical Engineering, Northumbria University, Newcastle upon Tyne, United Kingdom; German Centre for Geosciences, GFZ, Potsdam, Germany; Department of Mathematics and Statistics, University of ReadingReading, United Kingdom; British Antarctic Survey, Cambridge, United Kingdom; Mullard Space Science Laboratory, University College London, London, United Kingdom
推荐引用方式 GB/T 7714	Watt C.E.J.,Allison H.J.,Thompson R.L.,et al. The Implications of Temporal Variability in Wave-Particle Interactions in Earth's Radiation Belts[J],2021,48(1).
APA	Watt C.E.J..,Allison H.J..,Thompson R.L..,Bentley S.N..,Meredith N.P..,...&Rae I.J..(2021).The Implications of Temporal Variability in Wave-Particle Interactions in Earth's Radiation Belts.Geophysical Research Letters,48(1).
MLA	Watt C.E.J.,et al."The Implications of Temporal Variability in Wave-Particle Interactions in Earth's Radiation Belts".Geophysical Research Letters 48.1(2021).