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ANGEO | Articles | Volume 37, issue 2
Ann. Geophys., 37, 201–214, 2019
https://doi.org/10.5194/angeo-37-201-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Ann. Geophys., 37, 201–214, 2019
https://doi.org/10.5194/angeo-37-201-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Regular paper 09 Apr 2019

Regular paper | 09 Apr 2019

On the convection of ionospheric density features

John D. de Boer et al.

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Cited articles

Baumjohann, W. and Treumann, R. A.: Basic Space Plasma Physics, Imperial College Press, London, 236–238, 1996. a
Carlson, H. C.: Sharpening our thinking about polar cap ionospheric patch morphology, research and mitigation techniques, Radio Sci., 47, RSOL21, https://doi.org/10.1029/2011RS004946, 2012. a, b
de Boer, J. D., Noël, J.-M. A., and St.-Maurice, J.-P.: The effects of mesoscale regions of precipitation on the ionospheric dynamics, electrodynamics and electron density in the presence of strong ambient electric fields, Ann. Geophys., 28, 1345–1360, https://doi.org/10.5194/angeo-28-1345-2010, 2010. a, b
Gillies, R. G., Hussey, G. C., Sofko, G. J., McWilliams, K. A., Fiori, R. A. D., Ponomarenko, P., and St.-Maurice, J.-P.: Improvement of SuperDARN velocity measurements by estimating the index of refraction in the scattering region using interferometry, J. Geophys. Res., 114, A07305, https://doi.org/10.1029/2008JA013967, 2009.  a
Hosokawa, K., St-Maurice, J.-P., Sofko, G. J., Shiokawa, K., Otsuka, Y., and Ogawa, T.: Reorganization of polar cap patches through shears in the background plasma convection, J. Geophys. Res., 115, A01303, https://doi.org/10.1029/2009JA014599, 2010. a
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Modelling aurorae, we asked what boundary condition (BC) to use for the E field on the upper boundary. Typically a Dirichlet BC is used, since processes above the domain generate E. But then conductivity structures trigger FACs driven immediately by magnetospheric convection, even though it is a finite energy source, delayed by the Alfvén speed. If the BC is not ideal, then E x B drift in the ionosphere depends on the plasma's properties. So we investigated.
Modelling aurorae, we asked what boundary condition (BC) to use for the E field on the upper...
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