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Found 37 entries in the Bibliography.
Showing entries from 1 through 37
2020 |
An outstanding issue in the general circulation model simulations for Earth\textquoterights upper atmosphere is the inaccurate estimation of Joule heating, which could be associated with the inaccuracy of empirical models for high-latitude electrodynamic forcing. The binning methods used to develop those empirical models may contribute to the inaccuracy. Traditionally, data are binned through a static binning approach by using fixed geomagnetic coordinates, in which the dynamic nature of the forcing is ... Zhu, Qingyu; Deng, Yue; Richmond, Arthur; Maute, Astrid; Chen, Yun-Ju; Hairston, Marc; Kilcommons, Liam; Knipp, Delores; Redmon, Robert; Mitchell, Elizabeth; Published by: Journal of Geophysical Research: Space Physics Published on: 01/2020 YEAR: 2020   DOI: 10.1029/2019JA027270 Electric field; high latitude; Joule heating; particle precipitation |
Hemispheric asymmetry of the dayside aurora due to imbalanced solar insolation
Liou, Kan; Mitchell, Elizabeth; Published by: Scientific Reports Published on: |
2019 |
Effects of the interplanetary magnetic field y component on the dayside aurora A dawn\textendashdusk asymmetry in many high-latitude ionospheric and magnetospheric phenomena, including the aurora, can be linked to the east\textendashwest (y) component of the interplanetary magnetic field (IMF). Owing to the scarcity of observations in the Southern Hemisphere, most of the previous findings are associated with the Northern Hemisphere. It has long been suspected that if the IMF By component also produces a dawn\textendashdusk asymmetry and/or a mirror image in the ... Published by: Geoscience Letters Published on: 11/2019 YEAR: 2019   DOI: 10.1186/s40562-019-0141-3 |
It has been known for decades that the nightside aurora in the Northern Hemisphere (NH) tends to be brighter when the interplanetary magnetic field (IMF) measured at Earth has a dawnward (negative y) component compared to a duskward (positive y) component. This asymmetric response to the polarity of IMF By has been explained by an interhemispheric current flowing out of the NH due to a nonuniform \textquotedblleftpenetration\textquotedblright of IMF By< ... Published by: Journal of Geophysical Research: Space Physics Published on: 02/2019 YEAR: 2019   DOI: 10.1029/2018JA025953 |
North-south Asymmetry in Dayside Auroras Associated With Local Sunlight Conditions
Mitchell, Elizabeth; Liou, Kan; Published by: Published on: |
Zhang, Yongliang; Paxton, Larry; Robinson, Robert; MacDonald, Elizabeth; Mitchell, Elizabeth; Published by: Published on: |
2018 |
Kosar, Burcu; MacDonald, Elizabeth; Case, Nathan; Zhang, Yongliang; Mitchell, Elizabeth; Viereck, Rodney; Published by: Journal of Atmospheric and Solar-Terrestrial Physics Published on: 10/2018 YEAR: 2018   DOI: 10.1016/j.jastp.2018.05.006 |
Lyons, LR; Gallardo-Lacourt, B; Zou, Y; Nishimura, Y; Anderson, P; , Angelopoulos; Donovan, EF; Ruohoniemi, JM; Mitchell, E; Paxton, LJ; , others; Published by: Journal of Atmospheric and Solar-Terrestrial Physics Published on: |
Material flux from the rings of Saturn into its atmosphere
Perry, ME; , Waite; Mitchell, DG; Miller, KE; Cravens, TE; Perryman, RS; Moore, L; Yelle, RV; Hsu, H-W; Hedman, MM; , others; Published by: Geophysical Research Letters Published on: |
2017 |
Driving of Dramatic Geomagnetic Activity by Enhancement of Meso-Scale Polar-cap Flows
Lyons, Larry; Gallardo-Lacourt, Bea; Zou, Ying; Nishimura, Yukitoshi; Anderson, Phillip; Angelopoulos, VASSILIS; Ruohoniemi, Michael; Mitchell, Elizabeth; Paxton, Larry; Nishitani, Nozomu; Published by: Published on: |
2016 |
Validating Local Responses in OVATION Prime-2013 and OVATION-SM with DMSP SSUSI
Mitchell, Elizabeth; Schaefer, Robert; Paxton, Larry; Published by: Published on: |
Ionospheric data assimilation and forecasting during storms
Chartier, Alex; Matsuo, Tomoko; Anderson, Jeffrey; Collins, Nancy; Hoar, Timothy; Lu, Gang; Mitchell, Cathryn; Coster, Anthea; Paxton, Larry; Bust, Gary; Published by: Journal of Geophysical Research: Space Physics Published on: |
NASA Timed Guvi and Dmsp Ssusi Observations of the St. Patricks Day Storm of
Paxton, Larry; Zhang, Yongliang; Kil, Hyosub; Mitchell, Elizabeth; Schaefer, Robert; Published by: 41st COSPAR Scientific Assembly Published on: |
2015 |
We report, for the first time, an auroral undulation event on 1 May 2013 observed by an all-sky imager (ASI) at Athabasca (L = 4.6), Canada, for which in situ field and particle measurements in the conjugate magnetosphere were available from a Van Allen Probes spacecraft. The ASI observed a train of auroral undulation structures emerging spontaneously in the pre-midnight subauroral ionosphere, during the growth phase of a substorm. The undulations had an azimuthal wavelength of ~180 km and propagated westward at ... Motoba, T.; Takahashi, K.; Ukhorskiy, A.; Gkioulidou, M.; Mitchell, D.; Lanzerotti, L.; Korotova, G.; Donovan, E.; Wygant, J.; Kletzing, C.; Kurth, W.; Blake, J.; Published by: Journal of Geophysical Research: Space Physics Published on: 02/2015 YEAR: 2015   DOI: 10.1002/2014JA020863 |
During the ascending phase of solar cycle 24, a series of interplanetary coronal mass ejections (ICMEs) in the period 7–17 March 2012 caused geomagnetic storms that strongly Prikryl, P; Ghoddousi-Fard, R; Spogli, L; Mitchell, CN; Li, G; Ning, B; Cilliers, PJ; , Sreeja; Aquino, M; Terkildsen, M; , others; Published by: Published on: YEAR: 2015   DOI: 10.5194/angeo-33-637-2015 |
Auroral precipitation models and space weather
Newell, Patrick; Liou, Kan; Zhang, Yongliang; Sotirelis, Thomas; Mitchell, EJ; Mitchell, Elizabeth; Published by: Auroral dynamics and space weather Published on: |
Auroral precipitation models and space weather
Newell, Patrick; Liou, Kan; Zhang, Yongliang; Sotirelis, Thomas; Mitchell, EJ; Mitchell, Elizabeth; Published by: Auroral dynamics and space weather Published on: |
2014 |
OVATION Prime-2013: Extension of auroral precipitation model to higher disturbance levels OVATION Prime (OP) is an auroral precipitation model parameterized by solar wind driving. Distinguishing features of the model include an optimized solar wind-magnetosphere coupling function (dΦMP/dt) which predicts auroral power significantly better than\ Kp\ or other traditional parameters, the separation of aurora into categories (diffuse aurora, monoenergetic, broadband, and ion), the inclusion of seasonal variations, and separate parameter fits for each magnetic latitu ... Newell, P.; Liou, K.; Zhang, Y.; Sotirelis, T.; Paxton, L.; Mitchell, E.; Published by: Space Weather Published on: 06/2014 YEAR: 2014   DOI: 10.1002/swe.v12.610.1002/2014SW001056 |
Developing a Multi-Element Geospace Investigation to Understand the Impact of Hemispheric Assymetry
Paxton, Larry; Newell, Patrick; Stromme, Anja; Ridley, Aaron; Kozyra, Janet; Mitchell, Elizabeth; Published by: Published on: |
The Role of Thermospheric Composition in Ionospheric Forecasting
Chartier, A; Morgan, F; Bust, GS; Mitchell, CN; Published by: Published on: |
Newell, Patrick; Liou, Kan; Zhang, Yongliang; Sotirelis, Thomas; Paxton, Larry; Mitchell, Elizabeth; Published by: Published on: |
Accomplishing Transformative Research in a Challenging Fiscal Environment
Mitchell, Elizabeth; Paxton, Larry; Bust, G; Published by: Published on: |
2013 |
Kinrade, Joe; Mitchell, Cathryn; Paxton, Larry; Bust, Gary; Published by: Published on: |
The global positioning system (GPS) phase scintillation caused by highlatitude ionospheric irregularities during an intense high-speed stream (HSS) of the solar wind from April 29 to May 5, 2011, was observed using arrays of GPS ionospheric scintillation and total electron content monitors in the Arctic and Antarctica. The one-minute phase-scintillation index derived from the data sampled at 50 Hz was complemented by a proxy index (delta phase rate) obtained from 1-Hz GPS data. The scintillation occurrence coincided with ... Prikryl, Paul; Zhang, Yongliang; Ebihara, Yusuke; Ghoddousi-Fard, Reza; Jayachandran, Periyadan; Kinrade, Joe; Mitchell, Cathryn; Weatherwax, Allan; Bust, Gary; Cilliers, Pierre; , others; Published by: Annals of Geophysics Published on: |
Prikryl, Paul; Zhang, Yongliang; Ebihara, Yusuke; Ghoddousi-Fard, Reza; Jayachandran, Periyadan; Kinrade, Joe; Mitchell, Cathryn; Weatherwax, Allan; Bust, Gary; Cilliers, Pierre; , others; Published by: Annals of Geophysics Published on: |
2010 |
Muella, M.; Kherani, E.; de Paula, E.; Cerruti, A.; Kintner, P.; Kantor, I.; Mitchell, C.; Batista, I.; Abdu, M.; Published by: Journal of Geophysical Research Published on: Jan-01-2010 YEAR: 2010   DOI: 10.1029/2009JA014788 |
2008 |
Muella, Marcio; de Paula, Eurico; Kintner, Paul; Kantor, Ivan; Cerruti, Alessandro; Mitchell, Cathryn; Crowley, Geoff; Smorigo, Paulo; Batista, Inez; Published by: 37th COSPAR Scientific Assembly Published on: |
Ionospheric storm time dynamics as seen by GPS tomography and in situ spacecraft observations During major geomagnetic storms anomalous enhancements of the ionospheric density are seen at high and middle latitudes. A number of physical mechanisms have been invoked to explain these storm time density anomalies including an expansion of high-latitude electric plasma convection to midlatitudes, thermospheric neutral winds, and changes in the ionospheric composition. However, it remains unclear which mechanism plays the dominant role in the formation of storm time density anomalies, partly because of insufficient coverag ... Pokhotelov, D.; Mitchell, C.; Spencer, P.; Hairston, M.; Heelis, R.; Published by: Journal of Geophysical Research: Space Physics Published on: YEAR: 2008   DOI: https://doi.org/10.1029/2008JA013109 |
2005 |
Liemohn, Michael; Ridley, Aaron; Brandt, Pontus; Gallagher, Dennis; Kozyra, Janet; Ober, Daniel; Mitchell, Donald; Roelof, Edmond; DeMajistre, Robert; Published by: Journal of Geophysical Research: Space Physics Published on: |
Paxton, LJ; Kozyra, J; Demajistre, B; Kil, H; Morrison, D; Wolven, B; Mitchell, D; Brandt, P; Zhang, Y; Meng, C; Published by: Published on: |
2004 |
Zhang, Y; Paxton, LJ; Kozyra, JU; DeMajistre, R; Kil, H; Morrison, D; Wolven, B; Brandt, PC; Mitchell, DG; Talaat, E; Published by: Published on: |
Global ring current pressure during geomagnetic storms: solar wind and storm phase dependence
Brandt, PC; Roelof, EC; DeMajistre, R; Mitchell, DG; Vallat, C; Dandouras, I; Published by: Published on: |
Liemohn, MW; Ridley, AJ; Kozyra, JU; Gallagher, DL; Henderson, MG; Denton, MH; Jahn, J; Roelof, EC; DeMajistre, R; Mitchell, DG; , others; Published by: Published on: |
Extracting energetic ion distributions from energetic neutral atom images of space plasmas
DeMajistre, R; Roelof, EC; Mitchell, DG; , others; Published by: Published on: |
2003 |
Advanced time-of-flight system-on-a-chip for remote sensing instruments
Paschalidis, Nicholas; Stamatopoulos, Nick; Karadamoglou, Kosta; Kottaras, George; Paschalidis, Vasilis; Sarris, Emmanuel; Mitchell, Donald; Humm, David; Paxton, Larry; McNutt, Ralph; Published by: Published on: |
Storm-time ion pressure distribution of the inner magnetosphere
Brandt, PC; Roelof, EC; DeMajistre, R; Lui, AT; Mitchell, DG; Anderson, BJ; Ohtani, S; Fok, M-C; Published by: Published on: |
2002 |
Substorm Local Time and Compositional Characteristics During the April, 2002 Geomagnetic Storms
Mitchell, DG; Ohtani, S; Roelof, EC; DeMajistre, R; Reeves, G; Henderson, M; Skoug, R; Borovsky, J; , others; Published by: Published on: |
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