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DOI | 10.1029/2020GL087795 |
Quantifying the Solar Cycle Modulation of Extreme Space Weather | |
Chapman, S. C.1; McIntosh, S. W.2; Leamon, R. J.3,4; Watkins, N. W.1,5,6 | |
2020-05-30 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2020 |
卷号 | 47期号:11 |
文章类型 | Article |
语种 | 英语 |
国家 | England; USA |
英文摘要 | By obtaining the analytic signal of daily sunspot numbers since 1818 we construct a new solar cycle phase clock that maps each of the last 18 solar cycles onto a single normalized 11 year epoch. This clock orders solar coronal activity and extremes of theaaindex, which tracks geomagnetic storms at the Earth's surface over the last 14 solar cycles. We identify geomagnetically quiet intervals that are 40% of the normalized cycle, +/- 2 pi/5 in phase or +/- 2.2 years around solar minimum. Since 1868 only two severe (aa>300 nT) and one extreme (aa>500 nT) geomagnetic storms occurred in quiet intervals; 1-3% of severe (aa>300 nT) geomagnetic storms and 4-6% of C-, M-, and X-class solar flares occurred in quiet intervals. This provides quantitative support to planning resilience against space weather impacts since only a few percent of all severe storms occur in quiet intervals and their start and end times are quantifiable. |
英文关键词 | solar cycle space weather solar flares F10 7 geomagnetic storms extreme space weather events |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000543387400046 |
WOS关键词 | GEOMAGNETIC STORMS ; SIGNAL ; FLUX |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
URL | 查看原文 |
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/271620 |
专题 | 气候变化 |
作者单位 | 1.Univ Warwick, Phys Dept, Ctr Fus Space & Astrophys, Coventry, W Midlands, England; 2.Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA; 3.Univ Maryland, Dept Astron, College Pk, MD 20742 USA; 4.NASA, Goddard Space Flight Ctr, Code 672, Greenbelt, MD USA; 5.London Sch Econ & Polit Sci, Ctr Anal Time Series, London, England; 6.Open Univ, Fac Sci Technol Engn & Math Mat, Milton Keynes, Bucks, England |
推荐引用方式 GB/T 7714 | Chapman, S. C.,McIntosh, S. W.,Leamon, R. J.,et al. Quantifying the Solar Cycle Modulation of Extreme Space Weather[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(11). |
APA | Chapman, S. C.,McIntosh, S. W.,Leamon, R. J.,&Watkins, N. W..(2020).Quantifying the Solar Cycle Modulation of Extreme Space Weather.GEOPHYSICAL RESEARCH LETTERS,47(11). |
MLA | Chapman, S. C.,et al."Quantifying the Solar Cycle Modulation of Extreme Space Weather".GEOPHYSICAL RESEARCH LETTERS 47.11(2020). |
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