Weak Magnetic Storms Can Modulate Ionosphere-Plasmasphere Interaction Significantly: Mechanisms and Manifestations at Mid-Latitudes

Kotov, D.V.; Richards, P.G.; Truhlík, V.; Maruyama, N.; Fedrizzi, M.; Shulha, M.O.; Bogomaz, O.V.; Lichtenberger, J.; Hernández‐Pajares, M.; Chernogor, L.F.; Emelyanov, L.Ya.; Zhivolup, T.G.; Chepurnyy, Ya.M.; Domnin, I.F.

doi:10.1029/2019JA027076

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Weak Magnetic Storms Can Modulate Ionosphere-Plasmasphere Interaction Significantly: Mechanisms and Manifestations at Mid-Latitudes

2019
By Kotov, D.V. ; Richards, P.G. ; Truhlík, V. ; ...
Source: Journal of Geophysical Research: Space Physics, 124(4), 9965-9675

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Journal Title:

Journal of Geophysical Research: Space Physics
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Kotov, D.V. ; Richards, P.G. ; Truhlík, V. ; Maruyama, N. ; Fedrizzi, M. ; ... More +

Kotov, D.V. ; Richards, P.G. ; Truhlík, V. ; Maruyama, N. ; Fedrizzi, M. ; Shulha, M.O. ; Bogomaz, O.V. ; Lichtenberger, J. ; Hernández‐Pajares, M. ; Chernogor, L.F. ; Emelyanov, L.Ya. ; Zhivolup, T.G. ; Chepurnyy, Ya.M. ; Domnin, I.F. Less -
NOAA Program & Office:

CIRES (Cooperative Institute for Research in Environmental Sciences) ; SWPC (Space Weather Prediction Center) ; NWS (National Weather Service)

CIRES (Cooperative Institute for Research in Environmental Sciences) ; SWPC (Space Weather Prediction Center) ; NWS (National Weather Service) Less -
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A comprehensive study of the response of the ionosphere‐plasmasphere system at mid‐latitudes to weak (Dstmin > −50 nT) magnetic storms is presented. For the first time, it is shown that weak magnetic disturbances can lead to significant modulation of ionosphere‐plasmasphere H+ ion fluxes. It is found that this modulation is caused by the enhancements/reductions of the topside O+ ion density, which is induced by F2‐layer peak height rise and fall during the storms. The F2‐layer motion is caused by thermospheric wind changes and by a penetration electric field. Both drivers are closely related to the changes in the Bz component of interplanetary magnetic field. The most prominent manifestation of the H+ ion flux modulation is strong changes in H+ ion fraction in the topside ionosphere. This study also indicates that the NRLMSISE‐00 model provides the correct relative changes of neutral H density during weak magnetic storms and also that there is a compelling need to include geomagnetic activity indices, in addition to solar activity (F10.7), as input parameters to empirical topside ionosphere models.
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Ionosphere Magnetic Storms Plasmasphere
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Journal of Geophysical Research: Space Physics, 124(4), 9965-9675
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https://doi.org/10.1029/2019JA027076
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Journal Article
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urn:sha256:5b22bc4af0366ee374ce16b779b392548fbe55a1ebd39d92bc502f77ebb11279
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Weak Magnetic Storms Can Modulate Ionosphere-Plasmasphere Interaction Significantly: Mechanisms and Manifestations at Mid-Latitudes

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