Search Results - "Liemohn, M."

Current Systems in the Earth's Magnetosphere by Ganushkina, N. Yu, Liemohn, M. W., Dubyagin, S.

“…The basic structure and dynamics of the primary electric current systems in the Earth's magnetosphere are presented and discussed. In geophysics, the word…”
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Preface to the Special Collection: Recollections in Space Physics by Kepko, L., Liemohn, M.

“…Key Point Preface to the 100th anniversary edition of “Recollections in Space Physics” manuscripts…”
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Magnetospheric Sources of Theta Aurora: A Case Study Comparing Observations With SWMF Global Simulation by Hill, S. C., Pulkkinen, T. I., Brenner, A., Al Shidi, Q., Mukhopadhyay, A., Kullen, A., Frey, H., Zou, S., Liemohn, M.

“…We present the first high resolution global MHD with coupled inner magnetosphere simulation results of an observed theta aurora event. We use the Space Weather…”
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Photoelectrons in the Quiet Polar Wind by Glocer, A., Khazanov, G., Liemohn, M.

“…This study presents a newly coupled model capable of treating the superthermal electron population in the global polar wind solution. The model combines the…”
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Using ARMAX Models to Determine the Drivers of 40–150 keV GOES Electron Fluxes by Simms, L. E., Ganushkina, N. Yu, Kamp, M., Liemohn, M. W., Dubyagin, S.

“…We investigate the drivers of 40–150 keV hourly electron flux at geostationary orbit (GOES 13) using autoregressive moving average transfer functions (ARMAX)…”
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The ionospheric source of magnetospheric plasma is not a black box input for global models by Welling, D. T., Liemohn, M. W.

“…Including ionospheric outflow in global magnetohydrodynamic models of near‐Earth outer space has become an important step toward understanding the role of this…”
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Similarities and differences in low- to middle-latitude geomagnetic indices by Katus, R. M., Liemohn, M. W.

“…Several versions of low‐ to middle‐latitude geomagnetic indices are examined throughout a 24 year interval and during storm time with respect to a normalized…”
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Outflow in global magnetohydrodynamics as a function of a passive inner boundary source by Welling, D. T., Liemohn, M. W.

“…Numerous studies of the terrestrial magnetosphere that use global magnetohydrodynamic codes have found that the model's inner boundary can act as a significant…”
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Contribution from different current systems to SYM and ASY midlatitude indices by Dubyagin, S., Ganushkina, N., Kubyshkina, M., Liemohn, M.

“…Using empirical magnetospheric models, we study the relative contribution from different current systems to the SYM and ASY midlatitude indices. It was found…”
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Transport of the plasma sheet electrons to the geostationary distances by Ganushkina, N. Y., Amariutei, O. A., Shprits, Y. Y., Liemohn, M. W.

“…The transport and acceleration of low‐energy electrons (50–250 keV) from the plasma sheet to the geostationary orbit were investigated. Two moderate storm…”
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Pressure anisotropy in global magnetospheric simulations: A magnetohydrodynamics model by Meng, X., Tóth, G., Liemohn, M. W., Gombosi, T. I., Runov, A.

“…In order to better describe the space plasmas where pressure anisotropy has prominent effects, we extend the BATS‐R‐US magnetohydrodynamics (MHD) model to…”
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Turning Instrument Background Into Science Data for Structural Features of Radiation Belts by Ganushkina, N. Yu, Dandouras, I., Liemohn, M. W., Rème, H., Cao, J.

“…Approaches regarding how to turn the instrument background counts into scientifically valuable data are presented in this Technical Report on Methods. The…”
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The influence of production mechanisms on pick-up ion loss at Mars by Curry, S. M., Liemohn, M., Fang, X., Ma, Y., Espley, J.

“…This study quantifies the influence of ionization production mechanisms on ion escape and transport through near‐Mars space. The Mars Test Particle simulation…”
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Local time asymmetries and toroidal field line resonances: Global magnetospheric modeling in SWMF by Ellington, S. M., Moldwin, M. B., Liemohn, M. W.

“…We present evidence of resonant wave‐wave coupling via toroidal field line resonance (FLR) signatures in the Space Weather Modeling Framework's (SWMF) global,…”
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The effect of ring current electron scattering rates on magnetosphere‐ionosphere coupling by Perlongo, N. J., Ridley, A. J., Liemohn, M. W., Katus, R. M.

“…This simulation study investigated the electrodynamic impact of varying descriptions of the diffuse aurora on the magnetosphere‐ionosphere (M‐I) system. Pitch…”
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Defining and resolving current systems in geospace by Ganushkina, N. Y., Liemohn, M. W., Dubyagin, S., Daglis, I. A., Dandouras, I., De Zeeuw, D. L., Ebihara, Y., Ilie, R., Katus, R., Kubyshkina, M., Milan, S. E., Ohtani, S., Ostgaard, N., Reistad, J. P., Tenfjord, P., Toffoletto, F., Zaharia, S., Amariutei, O.

“…Electric currents flowing through near-Earth space (R ≤ 12 RE) can support a highly distorted magnetic field topology, changing particle drift paths and…”
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The two-way relationship between ionospheric outflow and the ring current by Welling, D. T., Jordanova, V. K., Glocer, A., Toth, G., Liemohn, M. W., Weimer, D. R.

“…It is now well established that the ionosphere, because it acts as a significant source of plasma, plays a critical role in ring current dynamics. However,…”
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Statistical analysis of the geomagnetic response to different solar wind drivers and the dependence on storm intensity by Katus, R. M., Liemohn, M. W., Ionides, E. L., Ilie, R., Welling, D., Sarno-Smith, L. K.

“…Geomagnetic storms start with activity on the Sun that causes propagation of magnetized plasma structures in the solar wind. The type of solar activity is used…”
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Statistical analysis of storm-time near-Earth current systems by Liemohn, M. W., Katus, R. M., Ilie, R.

“…Currents from the Hot Electron and Ion Drift Integrator (HEIDI) inner magnetospheric model results for all of the 90 intense storms (disturbance storm-time…”
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Statistical storm time examination of MLT-dependent plasmapause location derived from IMAGE EUV by Katus, R. M., Gallagher, D. L., Liemohn, M. W., Keesee, A. M., Sarno-Smith, L. K.

“…The location of the outer edge of the plasmasphere (the plasmapause) as a function of geomagnetic storm time is identified and investigated statistically in…”
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