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Title: Modelling the tongue-of-ionisation using CTIP with SuperDARN electric potential input: Verification by radiotomography
Authors: Pryse, S. E.
Whittick, E. L.
Middleton, H. R.
Brown, D. S.
Aylward, A. D.
Lester, Mark
Secan, J. A.
Middleton, H. R.
First Published: 2-Mar-2009
Publisher: European Geosciences Union (EGU)
Citation: Annales Geophysicae, 2009, 27 (3), pp. 1139-1152
Abstract: Electric potential patterns obtained by the SuperDARN radar network are used as input to the Coupled Thermosphere-Ionosphere-Plasmasphere model, in an attempt to improve the modelling of the spatial distribution of the ionospheric plasma at high latitudes. Two case studies are considered, one under conditions of stable IMF B[subscript: z] negative and the other under stable IMF B[subscript: z] positive. The modelled plasma distributions are compared with sets of well-established tomographic reconstructions, which have been interpreted previously in multi-instrument studies. For IMF B[subscript: z] negative both the model and observations show a tongue-of-ionisation on the nightside, with good agreement between the electron density and location of the tongue. Under B[subscript: z] positive, the SuperDARN input allows the model to reproduce a spatial plasma distribution akin to that observed. In this case plasma, unable to penetrate the polar cap boundary into the polar cap, is drawn by the convective flow in a tongue-of-ionisation around the periphery of the polar cap.
DOI Link: 10.5194/angeo-27-1139-2009
ISSN: 0992-7689
eISSN: 1432-0576
Version: Publisher Version
Status: Peer-reviewed
Type: Journal Article
Rights: Copyright © Author(s) 2009. This work is distributed under the Creative Commons Attribution 3.0 License ( ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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