Arthur D. Richmond

TL;DR: In this paper, a systematic analysis of the interplanetary magnetic field (IMF) By and Bz influences on observed thermospheric density is presented, and the difference density distributions, which are obtained by subtracting values for zero IMF from those for nonzero IMF, vary strongly with respect to the direction of the IMF: Difference densities for negative By show significant enhancements in the early morning hours and hours around dawn but show reduced values in the dusk sector.

TL;DR: In this paper, the authors analyzed how the evening equatorial plasma vortex and the prereversal enhancement (PRE) of the vertical drift are influenced by the distributions of conductivity in the E and F regions in relation to the wind, through numerical simulations with the thermosphere-ionosphere-electrodynamics general circulation model coupled with the global ionosphere-plasmasphere model.

TL;DR: A procedure for calibrating a complex computer simulation model having uncertain inputs and internal parameters, with application to the NCAR Thermosphere-Ionosphere-Electrodynamics General Circulation Model (TIE-GCM), and a fully Bayesian approach is implemented.

TL;DR: In this article, the authors examined the consequences of allowing for longitudinal gradients in the equatorial electrojet and showed how electric fields produced by hypothetical generating sources located at various latitudes are attenuated between the source and the Equator.

TL;DR: In this article, the drift of the geomagnetic field at the earth's surface and at the core is calculated, and the two values are shown to be considerably different and the best estimate of the westward rotation of the core for epoch 1965 is found to be 0.13° ± 0.03° per year.