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Found 6 entries in the Bibliography.
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Spatial structures in solar wind superthermal electrons and polar rain aurora
We report a special polar rain aurora case around 11:24 UT on October 27, 2003, where intense polar rain electrons produced observable polar rain auroral emission with the shape of a roughly dawn-dusk aligned bar. Associated solar wind speed and density observations during the event were around 450 km/s and 2.5 cm−3 respectively. The interplanetary magnetic field (IMF) components Bx, By, and Bz were \textasciitilde5, −3, and 5 nT respectively. The negative By condition likely caused the dawnside shift and slight tilt ...
Herschbach, Dennis; Zhang, Yongliang;
Published by: Journal of Atmospheric and Solar-Terrestrial Physics Published on: jul
YEAR: 2021   DOI: 10.1016/j.jastp.2021.105633
Magnetosphere interaction; Polar rain aurora; Polar rain electrons; solar wind; Solar wind superthermal electrons
Exploring the Upper Atmosphere
In this chapter, we describe how we can understand the state of the upper atmosphere (the ionosphere, thermosphere, and aurora) using optical observations and how one produces a global view of the Earth s upper atmosphere from optical remote sensing, especially using far ultraviolet (FUV) wavelengths, to advance our understanding of the near Earth space environment. We examine the choice of optical signatures, the basic science behind the signatures, and the techniques for observations. Examples of the technique as applied t ...
Paxton, Larry; Zhang, Yongliang; Kil, Hyosub; Schaefer, Robert;
Published by: Published on:
YEAR: 2021   DOI: 10.1002/9781119815631.ch23
Earth space environment; far ultraviolet wavelengths; high-latitude regions; optical remote sensing; solar wind; upper atmosphere
Ionosphere-thermosphere (IT) response to solar wind forcing during magnetic storms
During magnetic storms, there is a strong response in the ionosphere and thermosphere which occurs at polar latitudes. Energy input in the form of Poynting flux and energetic particle precipitation, and energy output in the form of heated ions and neutrals have been detected at different altitudes and all local times. We have analyzed a number of storms, using satellite data from the Defense Meteorological Satellite Program (DMSP), the Gravity Recovery and Climate Experiment (GRACE), Gravity field and steady-state Ocean C ...
Huang, Cheryl; Huang, Yanshi; Su, Yi-Jiun; Sutton, Eric; Hairston, Marc; Coley, William;
Published by: Journal of Space Weather and Space Climate Published on: 01/2016
YEAR: 2016   DOI: 10.1051/swsc/2015041
Energy distribution; Ionosphere; polar cap; solar wind; thermosphere
Polar cap arcs correlated with solar wind entry at the high latitude magnetosphere
Polar cap arcs are sun-aligned aurora structures occurring during northward turnings of the Interplanetary Magnetic Field (IMF) Bz component. At the same time, a new region of solar wind entry at the high latitude magnetosphere, tailward of the cusp region, was found recently at the periods of northward IMF Bz. We propose a study to see the relationship of these entry events with the transpolar arc formation. Data of Global Ultraviolet Imager (GUVI) onboard TIMED mission is examined to see the transp ...
Mailyan, B.; Shi, Q.; Gou, X.;
Published by: Published on:
YEAR: 2014   DOI: 10.1109/URSIGASS.2014.6929926
aurora interplanetary; GUVI; magnetic fields; magnetosphere; solar wind; TIMED
Comparison of penetration electric fields created by the solar wind with Jicamarca data using SWAGE
SWAGE (Solar Wind Acting on the Geophysical Environment) calculates the global ionospheric electric field generated by high-latitude electrodynamics drivers determined from the time-shifted solar wind data measured at L1 by joining the Hill-Siscoe polar cap potential model with the N-C ionospheric potential solver. Of particular interest are the conditions under which the eastward equatorial penetration electric field near twilight contributes to the pre-reversal enhancement (PRE). In the present model, it is found that a ...
Rothwell, P.; Jasperse, J.; Grossbard, N.;
Published by: Journal of Geophysical Research Published on: 09/2012
YEAR: 2012   DOI: 10.1029/2012JA017684
Comparison of the Hill–Siscoe polar cap potential theory with the Weimer and AMIE models
The magnetic storm on November 2004 was characterized by a high solar wind pressure and thus offers a unique opportunity to test the Hill–Siscoe formula (H–S) for the polar cap potential (PCP). To estimate the polar cap potential, we use the Weimer Statistical Convection Model (WCM), and the Assimilative Mapping of Ionospheric Electrodynamics Model (AMIE), based on ingestion of a number of data sets. H–S is in excellent agreement with WCM, and with AMIE during times when DMSP is used in the latter. The implication is t ...
Kelley, Michael; Crowley, Geoffrey; Weimer, Daniel;
Published by: Journal of Atmospheric and Solar-Terrestrial Physics Published on:
YEAR: 2010   DOI: https://doi.org/10.1016/j.jastp.2009.02.011
Magnetic storm; Polar cap potential; Hill–Siscoe formula; solar wind