气候变化领域集成服务门户(CCPortal): Daytime Dynamo Electrodynamics With Spiral Currents Driven by Strong Winds Revealed by Vapor Trails and Sounding Rocket Probes

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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
	Pfaff R.; Larsen M.; Abe T.; Habu H.; Clemmons J.; Freudenreich H.; Rowland D.; Bullett T.; Yamamoto M.-Y.; Watanabe S.; Kakinami Y.; Yokoyama T.; Mabie J.; Klenzing J.; Bishop R.; Walterscheid R.; Yamamoto M.; Yamazaki Y.; Murphy N.; Angelopoulos V.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:15
英文摘要	We investigate the forces and atmosphere-ionosphere coupling that create atmospheric dynamo currents using two rockets launched nearly simultaneously on 4 July 2013 from Wallops Island (USA), during daytime Sq conditions with ΔH of −30 nT. One rocket released a vapor trail observed from an airplane which showed peak velocities of >160 m/s near 108 km 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. © 2020. The Authors.
英文关键词	Electric fields; Interactive devices; Ionosphere; Plasma density; Rockets; Atmosphere-ionosphere couplings; Dynamo currents; Dynamo equations; Electric and magnetic fields; Ground measurements; Peak velocities; Spiral pattern; Stratified current; Shear flow; electric field; electrodynamics; ionosphere; magnetic field; plasma; probe; turbulence; vapor pressure; wind field; United States; Virginia; Wallops Island
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/169966
作者单位	NASA Goddard Space Flight Center, Greenbelt, MD, United States; Department of Physics and Astronomy, Clemson University, Clemson, SC, United States; Japan Aerospace Exploration Agency, Tokyo, Japan; Department of Physics and Astronomy, University of New Hampshire, Durham, NH, United States; Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, United States; National Oceanic and Atmospheric Administration, Boulder, CO, United States; School of Systems Engineering, Kochi University of TechnologyKami, Japan; Department of Information Media, Hokkaido Information UniversityEbetsu, Japan; Research Institute for Sustainable Humanosphere, Kyoto UniversityUji, Japan; Aerospace Corporation, El Segundo, CA, United States; Geo Forschungs Zentrum, Potsdam, Germany; Jet Propulsion Laboratory, Pasadena, CA, United States; Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles, CA, United States
推荐引用方式 GB/T 7714	Pfaff R.,Larsen M.,Abe T.,et al. Daytime Dynamo Electrodynamics With Spiral Currents Driven by Strong Winds Revealed by Vapor Trails and Sounding Rocket Probes[J],2020,47(15).
APA	Pfaff R..,Larsen M..,Abe T..,Habu H..,Clemmons J..,...&Angelopoulos V..(2020).Daytime Dynamo Electrodynamics With Spiral Currents Driven by Strong Winds Revealed by Vapor Trails and Sounding Rocket Probes.Geophysical Research Letters,47(15).
MLA	Pfaff R.,et al."Daytime Dynamo Electrodynamics With Spiral Currents Driven by Strong Winds Revealed by Vapor Trails and Sounding Rocket Probes".Geophysical Research Letters 47.15(2020).