An assessment of the role of soft electron precipitation in global ion upwelling

An assessment of the role of soft electron precipitation in global ion upwelling

The role of electron precipitation in the auroral zone in driving thermal O+ upwelling is explored by comparison of observations and model results. Previous reports have shown how the ambiguities of such an assessment can be reduced when the problem is addressed in dynamic boundary‐related coordinat...

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Veröffentlicht in:Journal of geophysical research. Space physics 2014-09, Vol.119 (9), p.7665-7678
Hauptverfasser: Redmon, Robert J., Peterson, W. K., Andersson, Laila, Richards, Philip G., Yau, A. W.
Format: Artikel
Sprache:eng
Schlagworte:
DMSP
global models
ionospheric O+ upwelling
magnetosphere/ionosphere coupling
Meteorological satellites
soft electron precipitation
Upwelling
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Zusammenfassung:The role of electron precipitation in the auroral zone in driving thermal O+ upwelling is explored by comparison of observations and model results. Previous reports have shown how the ambiguities of such an assessment can be reduced when the problem is addressed in dynamic boundary‐related coordinates. Upwelling ion data from the Defense Meteorological Satellite Program (DMSP) satellites are compared using a modeling framework based on the Field Line Interhemispheric Plasma (FLIP) ionospheric model. We focus on geomagnetically quiet intervals, that is, nonstorm times with Dst > −50 nT. We find that low‐energy (
ISSN:2169-9380
2169-9402
DOI:10.1002/2014JA020061