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G. K. Stephens

Johns Hopkins University Applied Physics Laboratory

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Journal of Geophysical Research | 2017

Effects of Electrojet Turbulence on a Magnetosphere-Ionosphere Simulation of a Geomagnetic Storm†

M. Wiltberger; V. G. Merkin; Binzheng Zhang; Frank R. Toffoletto; Meers M. Oppenheim; Wenbin Wang; J. G. Lyon; Jing Liu; Yakov S. Dimant; M. I. Sitnov; G. K. Stephens

This material is based upon work supported by NASA grants NNX14AI13G, NNX13AF92G, and NNX16AB80G. The National Center for Atmospheric Research is sponsored by the National Science Foundation. This work used the XSEDE and TACC computational facilities, supported by National Science Foundation grant ACI-1053575. We would like to acknowledge high-performance computing support from Yellowstone (ark:/85065/d7wd3xhc) provided by NCARs Computational and Information Systems Laboratory, sponsored by the National Science Foundation. We thank the AMPERE team and the AMPERE Science Center for providing the Iridium derived data products. All model output, simulation codes, and analysis routines are being preserved on the NCAR High-Performance Storage System and will be made available upon written request to the lead author of this publication. (NNX14AI13G - NASA; NNX13AF92G - NASA; NNX16AB80G - NASA; National Science Foundation; ACI-1053575 - National Science Foundation)

Journal of Geophysical Research | 2013

Empirical reconstruction of storm time steady magnetospheric convection events

G. K. Stephens; M. I. Sitnov; Jennifer Kissinger; N. A. Tsyganenko; R. L. McPherron; Haje Korth; Brian J. Anderson

Journal of Geophysical Research | 2016

Empirical modeling of the storm time innermost magnetosphere using Van Allen Probes and THEMIS data: Eastward and banana currents

G. K. Stephens; M. I. Sitnov; A. Y. Ukhorskiy; Edmond C. Roelof; N. A. Tsyganenko; G. Le

Space Science Reviews | 2018

Calibration, Projection, and Final Image Products of MESSENGER’s Mercury Dual Imaging System

Brett W. Denevi; Nancy L. Chabot; Scott L. Murchie; Kris J. Becker; David T. Blewett; Deborah L. Domingue; Carolyn M. Ernst; C. D. Hash; S. Edward Hawkins; Mary R. Keller; Nori R. Laslo; Hari Nair; Mark S. Robinson; F. P. Seelos; G. K. Stephens; F. Scott Turner; Sean C. Solomon

Space Weather-the International Journal of Research and Applications | 2012

Forecasting of global data-binning parameters for high-resolution empirical geomagnetic field models

M. I. Sitnov; A. Y. Ukhorskiy; G. K. Stephens

Archive | 2018

Empirical Modeling of Extreme Events: Storm-Time Geomagnetic Field, Electric Current, and Pressure Distributions

M. I. Sitnov; G. K. Stephens; Matina Gkioulidou; V. G. Merkin; A. Y. Ukhorskiy; Haje Korth; Pontus C Son Brandt; N. A. Tsyganenko

Journal of Geophysical Research | 2017

Effects of electrojet turbulence on a magnetosphere-ionosphere simulation of a geomagnetic storm: EFFECTS OF ET

M. Wiltberger; V. G. Merkin; Binzheng Zhang; Frank R. Toffoletto; Meers Maxwell Oppenheim; Wenbin Wang; J. G. Lyon; Jing Liu; Yakov S. Dimant; M. I. Sitnov; G. K. Stephens

2014 AGU Fall Meeting | 2017

Spatial Structure and Asymmetries of Magnetospheric Currents Inferred from High-Resolution Empirical Geomagnetic Field Models

M. I. Sitnov; G. K. Stephens; N. A. Tsyganenko; A. Y. Ukhorskiy; S. Wing; Haje Korth; Brian J. Anderson

Planetary and Space Science | 2016

Determining shape of a seasonally shadowed asteroid using stellar occultation imaging

Scott L. Murchie; Hari Nair; G. K. Stephens

Journal of Geophysical Research | 2016

Empirical modeling of the storm time innermost magnetosphere using Van Allen Probes and THEMIS data: Eastward and banana currents: EASTWARD AND BANANA CURRENTS

G. K. Stephens; M. I. Sitnov; A. Y. Ukhorskiy; Edmond C. Roelof; N. A. Tsyganenko; G. Le

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M. I. Sitnov

Johns Hopkins University Applied Physics Laboratory

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A. Y. Ukhorskiy

Johns Hopkins University Applied Physics Laboratory

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N. A. Tsyganenko

Saint Petersburg State University

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Haje Korth

Johns Hopkins University Applied Physics Laboratory

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V. G. Merkin

Johns Hopkins University Applied Physics Laboratory

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Binzheng Zhang

National Center for Atmospheric Research

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Edmond C. Roelof

Johns Hopkins University Applied Physics Laboratory

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Frank R. Toffoletto

Rice University

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G. Le

Goddard Space Flight Center

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Hari Nair

Johns Hopkins University Applied Physics Laboratory

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