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DOI | 10.1029/2020GL088803 |
Daytime dynamo electrodynamics with spiral currents driven by strong winds revealed by vapor trails and sounding rocket probes | |
R. Pfaff; M. Larsen; T. Abe; H. Habu; J. Clemmons; H. Freudenreich; D. Rowland; T. Bullett; M.‐; Y. Yamamoto; S. Watanabe; Y. Kakinami; T. Yokoyama; J. Mabie; J. Klenzing; R. Bishop; R. Walterscheid; M. Yamamoto; Y. Yamazaki; N. Murphy; V. Angelopoulos | |
2020-07-17 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2020 |
英文摘要 | We investigate the forces and atmosphere‐ionosphere coupling that create atmospheric dynamo currents using two rockets launched nearly simultaneously on July 4, 2013 from Wallops Island (USA), during daytime Sq conditions with ΔH of ‐30nT. One rocket released a vapor trail observed from an airplane which showed peak velocities of >160m/s near 108km and turbulence coincident with strong unstable shear. Electric and magnetic fields and plasma density were measured on a second rocket. The current density peaked near 110 km exhibiting a spiral pattern with altitude that mirrored that of the winds, suggesting the dynamo is driven by tidal forcing. Such stratified currents are obscured in integrated ground measurements. Large electric fields produced a current opposite to that driven by the wind, believed created to minimize the current divergence. Using the observations, we solve the dynamo equation versus altitude, providing a new perspective on the complex nature of the atmospheric dynamo. |
领域 | 气候变化 |
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/284239 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | R. Pfaff,M. Larsen,T. Abe,et al. Daytime dynamo electrodynamics with spiral currents driven by strong winds revealed by vapor trails and sounding rocket probes[J]. Geophysical Research Letters,2020. |
APA | R. Pfaff.,M. Larsen.,T. Abe.,H. Habu.,J. Clemmons.,...&V. Angelopoulos.(2020).Daytime dynamo electrodynamics with spiral currents driven by strong winds revealed by vapor trails and sounding rocket probes.Geophysical Research Letters. |
MLA | R. Pfaff,et al."Daytime dynamo electrodynamics with spiral currents driven by strong winds revealed by vapor trails and sounding rocket probes".Geophysical Research Letters (2020). |
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