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Ionospheric Energy Input in Response to Changes in Solar Wind Driving: Statistics From the SuperDARN and AMPERE Campaigns

https://doi.org/10.1029/2021JA030102

Billett, D. D.; McWilliams, K. A.; Perry, G. W.; Clausen, L. B.; Anderson, B. J. (March 2022, Journal of Geophysical Research: Space Physics)

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The Relationship Between Large Scale Thermospheric Density Enhancements and the Spatial Distribution of Poynting Flux

https://doi.org/10.1029/2021JA029205

Billett, D. D.; Perry, G. W.; Clausen, L. B.; Archer, W. E.; McWilliams, K. A.; Haaland, S.; Reistad, J. P.; Burchill, J. K.; Patrick, M. R.; Humberset, B. K.; et al (May 2021, Journal of Geophysical Research: Space Physics)

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Transient Ionospheric Upflow Driven by Poleward Moving Auroral forms Observed During the Rocket Experiment for Neutral Upwelling 2 (RENU2) Campaign

https://doi.org/10.1029/2018GL081886

Burleigh, M.; Zettergren, M.; Lynch, K.; Lessard, M.; Moen, J.; Clausen, L.; Kenward, D.; Hysell, D.; Liemohn, M. (June 2019, Geophysical Research Letters)

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Source Region and Propagation of Dayside Large‐Scale Traveling Ionospheric Disturbances

https://doi.org/10.1029/2020GL089451

Nishimura, Y.; Zhang, S. R.; Lyons, L. R.; Deng, Y.; Coster, A. J.; Moen, J. I.; Clausen, L. B.; Bristow, W. A.; Nishitani, N. (September 2020, Geophysical Research Letters)

Abstract We examined the source region of dayside large‐scale traveling ionospheric disturbances (LSTIDs) and their relation to cusp energy input. Aurora and total electron content (TEC) observations show that LSTIDs propagate equatorward away from the cusp and demonstrate the cusp region as the source region. Enhanced energy input to the cusp initiated by interplanetary magnetic field (IMF) southward turning triggers the LSTIDs, and each LSTID oscillation is correlated with a TEC enhancement in the dayside oval with tens of minutes periodicity. Equatorward‐propagating LSTIDs are likely gravity waves caused by repetitive heating in the cusp. The cusp source can explain the high LSTID occurrence on the dayside during geomagnetically active times. Poleward‐propagating ΔTEC patterns in the polar cap propagate nearly at the convection speed. While they have similar ΔTEC signatures to gravity wave‐driven LSTIDs, they are suggested to be weak polar cap patches quasiperiodically drifting from the cusp into the polar cap via dayside reconnection.
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