DOI: 10.1002/2015GL067481
论文题名: Forecasting and remote sensing outer belt relativistic electrons from low Earth orbit
作者: Chen Y. ; Reeves G.D. ; Cunningham G.S. ; Redmon R.J. ; Henderson M.G.
刊名: Geophysical Research Letters
ISSN: 0094-9423
EISSN: 1944-9154
出版年: 2016
卷: 43, 期: 3 起始页码: 1031
结束页码: 1038
语种: 英语
英文关键词: forecast and nowcast
; hundreds of keV precipitating electrons
; LEO observations
; radiation belts
; relativistic electrons
; wave particle interactions
Scopus关键词: Communication satellites
; Electrons
; Forecasting
; Geomagnetism
; Radiation belts
; Remote sensing
; Correlation coefficient
; LEO observations
; Linear prediction filter
; Low earth orbit(LEO)
; Nowcast
; Performance efficiency
; Relativistic electron
; Wave-particle interactions
; Orbits
; altitude
; electron
; feasibility study
; forecasting method
; geomagnetic storm
; particle size
; performance assessment
; remote sensing
; resonance
; satellite
英文摘要: This study demonstrates the feasibility and reliability of using observations from low Earth orbit (LEO) to forecast and nowcast relativistic electrons in the outer radiation belt. We first report a high cross-energy, cross-pitch-angle coherence discovered between the trapped MeV electrons and precipitating approximately hundreds (∼100s) of keV electrons - observed by satellites with very different altitudes - with correlation coefficients as high as ≳0.85. Based upon the coherence, we then tested the feasibility of applying linear prediction filters to LEO data to predict the arrival of new MeV electrons during geomagnetic storms, as well as their evolving distributions afterward. Reliability of these predictive filters is quantified by the performance efficiency with values as high as 0.74 when driven merely by LEO observations (or up to 0.94 with the inclusion of in situ MeV electron measurements). Finally, a hypothesis based upon the wave-particle resonance theory is proposed to explain the coherence, and a first-principle electron tracing model yields supporting evidence. © 2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84969389692&doi=10.1002%2f2015GL067481&partnerID=40&md5=cb4a95a440d184e8bcda9d1c3141a34e
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10386
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Los Alamos National Laboratory, Los Alamos, NM, United States
Recommended Citation:
Chen Y.,Reeves G.D.,Cunningham G.S.,et al. Forecasting and remote sensing outer belt relativistic electrons from low Earth orbit[J]. Geophysical Research Letters,2016-01-01,43(3).