H. Akbari, J. L. Semeter, H. Dahlgren, M. Diaz, M. Zettergren, A. Strømme, M. J. Nicolls, and C. Heinselman. Anomalous ISR echoes preceding auroral breakup: Evidence for strong Langmuir turbulence. Geophys. Res. Lett., volume 39, 2012 . H. Bahcivan and J. W. Cutler. Radio Aurora Explorer: Mission science and radar system. Radio Sci., volume 47, 2012 . H. Bahcivan, J. W. Cutler, M. Bennett, B. Kempke, J. C. Springmann, J. Buonocore, M. Nicolls, and R. Doe. First measurements of radar coherent scatter by the Radio Aurora Explorer CubeSat. Geophys. Res. Lett., volume 39, 2012 . J. K. Burchill, J. H. Clemmons, D. J. Knudsen, M. Larsen, M. J. Nicolls, R. F. Pfaff, D. Rowland, and L. Sangalli. High-latitude E region ionosphere-thermosphere coupling: A comparative study using in situ and incoherent scatter radar observations. J. Geophys. Res., volume 117, 2012 . H. Dahlgren, G. W. Perry, J. L. Semeter, J.-P. St.-Maurice, K. Hosokawa, M. J. Nicolls, M. Greffen, K. Shiokawa, and C. Heinselman. Space-time variability of polar cap patches: Direct evidence for internal plasma structuring. J. Geophys. Res., volume 117, 2012 . H. Dahlgren, J. L. Semeter, K. Hosokawa, M. J. Nicolls, T. W. Butler, M. G. Johnsen, K. Shiokawa, and C. Heinselman. Direct three-dimensional imaging of polar ionospheric structures with the Resolute Bay Incoherent Scatter Radar. Geophys. Res. Lett., volume 39, 2012 . J. T. Fentzke, V. Hsu, C. G. M. Brum, I. Strelnikova, M. Rapp, and M. Nicolls. D region meteoric smoke and neutral temperature retrieval using the poker flat incoherent scatter radar. Geophys. Res. Lett., volume 39, issue 21, 2012 . D. Hysell, R. Miceli, J. Munk, D. Hampton, C. Heinselman, M. Nicolls, S. Powell, K. Lynch, and M. Lessard. Comparing VHF coherent scatter from the radar aurora with incoherent scatter and all-sky auroral imagery. J. Geophys. Res., volume 117, 2012 . P. T. Jayachandran, K. Hosokawa, K. Shiokawa, Y. Otsuka, C. Watson, S. C. Mushini, J. W. Macdougall, P. Prikryl, R. Chadwick, and T. D. Kelly. GPS total electron content variations associated with poleward moving Sun-aligned arcs. J. Geophys. Res., volume 117, 2012 . A. V. Koustov, K. Hosokawa, N. Nishitani, K. Shiokawa, and H. Liu. Signatures of moving polar cap arcs in the F-region PolarDARN echoes. Ann. Geophys., volume 30, issue 3, pages 441-455, 2012 . T. B. Leyser, F. Waldemarsson, and S. C. Buchert. Plasma angular momentum effects and twisted incoherent scatter radar beams. Radio Sci., volume 47, issue 5, 2012 . K. A. Lynch, D. Hampton, M. Mella, B. Zhang, H. Dahlgren, M. Disbrow, P. M. Kintner, M. Lessard, E. Lundberg, and H. C. Stenbaek-Nielsen. Structure and dynamics of the nightside poleward boundary: Sounding rocket and ground-based observations of auroral electron precipitation in a rayed curtain. J. Geophys. Res., volume 117, 2012 . M. J. Nicolls, S. L. Vadas, J. W. Meriwether, M. G. Conde, and D. Hampton. The phases and amplitudes of gravity waves propagating and dissipating in the thermosphere: Application to measurements over Alaska. J. Geophys. Res., volume 117, 2012 . M. J. Nicolls, D. C. Fritts, D. Janches, and C. J. Heinselman. Momentum flux determination using the multi-beam Poker Flat Incoherent Scatter Radar. Ann. Geophys., volume 30, issue 6, pages 945-962, 2012 . T. Nishiyama, T. Sakanoi, Y. Miyoshi, R. Kataoka, D. L. Hampton, Y. Katoh, K. Asamura, and S. Okano. Fine scale structures of pulsating auroras in the early recovery phase of substorm using ground-based EMCCD camera. J. Geophys. Res., volume 117, 2012 . D. R. Themens, P. T. Jayachandran, R. B. Langley, J. W. Macdougall, and M. J. Nicolls. Determining receiver biases in GPS-derived total electron content in the auroral oval and polar cap region using ionosonde measurements. GPS Solutions, 2012 . S. L. Vadas and M. J. Nicolls. The phases and amplitudes of gravity waves propagating and dissipating in the thermosphere: Theory. J. Geophys. Res., volume 117, 2012 . R. Volz and S. Close. Inverse filtering of radar signals using compressed sensing with application to meteors. Radio Sci., volume 47, 2012 .