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DOI | 10.1029/2018GL078718 |
Statistical Relations Between Field-Aligned Currents and Precipitating Electron Energy Flux | |
Robinson, R. M.1; Zhang, Y.2; Anderson, B. J.2; Zanetti, L. J.2; Korth, H.2; Fitzmaurice, A.1 | |
2018-09-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:17页码:8738-8745 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Measurements of field-aligned currents from the Active Magnetosphere and Planetary Electrodynamics Response Experiment are combined with measurements of far ultraviolet emissions from the Global Ultraviolet Imager on the Thermosphere-Ionosphere-Mesosphere Energetics and Dynamics satellite to examine the correlation between parallel currents and auroral electron energy flux. The energy flux is derived from the far ultraviolet emissions in the N-2 Lyman-Birge-Hopfield bands. We find that energy flux correlates with field-aligned currents in both upward and downward current regions. The correlations vary with magnetic local time with the strongest dependences near magnetic midnight. The data are binned and averaged to construct a model of precipitating particle energy flux as a function of field-aligned current and magnetic local time. With Active Magnetosphere and Planetary Electrodynamics Response Experiment data as input, the model yields accurate estimates of the hemispheric power input from precipitating particles. Plain Language Summary One of the major sources of energy deposited into Earth's atmosphere is from precipitating particles associated with the aurora at high latitudes. Quantifying the amount of energy from auroral precipitation is a long-standing problem because of the absence of global observations. We show that auroral energy flux correlates with electric currents along Earth's magnetic field at high latitudes. Because global measurements of these parallel currents are now available continuously from the Iridium satellite constellation, the observed correlations can be used to estimate energy flux from precipitating particles on a routine basis. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000445727500005 |
WOS关键词 | ULTRAVIOLET AURORAL EMISSIONS ; EMPIRICAL RELATIONSHIP ; BIRKELAND CURRENTS ; DMSP OBSERVATIONS ; MAGNETOMETER DATA ; HIGH-LATITUDES ; MAGNETOSPHERE ; SYSTEM |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/26441 |
专题 | 气候变化 |
作者单位 | 1.Catholic Univ Amer, Dept Phys, Washington, DC 20064 USA; 2.Johns Hopkins Univ, Appl Phys Lab, Laurel, MD USA |
推荐引用方式 GB/T 7714 | Robinson, R. M.,Zhang, Y.,Anderson, B. J.,et al. Statistical Relations Between Field-Aligned Currents and Precipitating Electron Energy Flux[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(17):8738-8745. |
APA | Robinson, R. M.,Zhang, Y.,Anderson, B. J.,Zanetti, L. J.,Korth, H.,&Fitzmaurice, A..(2018).Statistical Relations Between Field-Aligned Currents and Precipitating Electron Energy Flux.GEOPHYSICAL RESEARCH LETTERS,45(17),8738-8745. |
MLA | Robinson, R. M.,et al."Statistical Relations Between Field-Aligned Currents and Precipitating Electron Energy Flux".GEOPHYSICAL RESEARCH LETTERS 45.17(2018):8738-8745. |
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