Cummer, S. A., Inan, U. S., and Bell, T. F.: Ionospheric D region remote sensing using VLF radio atmospherics, Radio Sci., 33, 1781–1792, https://doi.org/10.1029/98RS02381, 1998.
Fang, X., Randal, C. E., Lummerzheim, I. D., Solomon, S. C., Mills, M. J., Marsh, D. R., Jackman, C. H., Wang, W., and Lu, G.: Electron impact ionization: A new parameterization for 100 eV to 1 MeV electrons, J. Geophys. Res., 113, A09311, https://doi.org/10.1029/2008JA013384, 2008.
Ferguson, J. A.: Computer Programs for Assessments of Long-Wavelength Radio Communications, Version 2.0, Technical Document, SPAWAR Systems Center, San Diego, USA, available at: http://www.dtic.mil/dtic/tr/fulltext/u2/a350375.pdf (last access: 12 May 2015), 1998.
Mitra, A. P. and Rowe, J. N.: Ionospheric effects of solar flares – VI. Changes in D-region ion chemistry during solar flares, J. Atmos. Sol.-Terr. Phy., 34, 795–806, 1972.
Mitra, A. P.: D-region in disturbed conditions, including flares and energetic particles, J. Atmos. Sol.-Terr. Phy., 37, 895–913, 1975.
Ohtani, S., Wing, S., Newell, P. T., and Higuchi, T.: Locations of nights' side precipitation boundaries relative to R2 and R1 currents, J. Geophys. Res., 115, A10233, https://doi.org/10.1029/2010JA015444, 2010.
Rodger, C. R., Clilverd, M. A., Thomson, N. R., Gamble, R. J., Seppaelae, A., Turunen, E., Meredith, N. P., Parrot, M., Sauvaud, J. A., Berthelier, J. J.: Radiation belt electron precipitation into the atmosphere: Recovery from a geomagnetic storm, J. Geophys. Res., 112, A11307, https://doi.org/10.1029/2007JA012383, 2007.
Saetre, C., Stadsnes, J., Nesse, H., Aksnes, A., Petrinec, S. M., Barth, C. A., Baker, D. N., Vondrak, R. R., and Ostgaard, N.: Energetic electron precipitation and the NO abundance in the upper atmosphere: A direct comparison during a geomagnetic storm, J. Geophys. Res., 109, A09302, https://doi.org/10.1029/2004JA010485, 2004.
Salmi, S.-M., Verronen, P. T., Thölix, L., Kyrölä, E., Backman, L., Karpechko, A. Yu., and Seppälä, A.: Mesosphere-to-stratosphere descent of odd nitrogen in February-March 2009 after sudden stratospheric warming, Atmos. Chem. Phys., 11, 4645–4655, https://doi.org/10.5194/acp-11-4645-2011, 2011.
Semeniuk, K., McConnell, J. C. , Jin, J. J. Jarosz, J. R., Boone, C. D., and Bernath, P. F.: N
2O production by high energy auroral electron precipitation, J. Geophys. Res., 113, D16302, https://doi.org/10.1029/2007JD009690, 2008.
Schmitter, E. D.: Remote auroral activity detection and modeling using low frequency transmitter signal reception at a midlatitude site, Ann. Geophys., 28, 1807–1811, https://doi.org/10.5194/angeo-28-1807-2010, 2010.
Schmitter, E. D.: Remote sensing planetary waves in the midlatitude mesosphere using low frequency transmitter signals, Ann. Geophys., 29, 1287–1293, https://doi.org/10.5194/angeo-29-1287-2011, 2011.
Schmitter, E. D.: Data analysis of low frequency transmitter signals received at a midlatitude site with regard to planetary wave activity, Adv. Radio Sci., 10, 279–284, https://doi.org/10.5194/ars-10-279-2012, 2012.
Schmitter, E. D.: Modeling solar flare induced lower ionosphere changes using VLF/LF transmitter amplitude and phase observations at a midlatitude site, Ann. Geophys., 31, 765–773, https://doi.org/10.5194/angeo-31-765-2013, 2013.
Schmitter, E. D.: Remote sensing and modeling of lightning caused long recovery events within the lower ionosphere using VLF/LF radio wave propagation, Adv. Radio Sci., 12, 241-250, https://doi.org/10.5194/ars-12-241-2014, 2014.
Sigernes, F., Dyrland, M., Brekke, P., Chernouss, S., Lorentzen, D. A., Oksavik, K., and Deehr, C. S.: Two methods to forecast auroral displays, J. Space Weather, 1, A03, https://doi.org/10.1051/swsc/2011003, 2011.
Thorne, R. M.: A cause of dayside relativistic electron possible precipitation events, J. Atmos. Sol.-Terr. Phy., 36, 635–645, https://doi.org/10.1016/0021-9169(74)90087-7, 1974.
Thorne, R. M., Li, W., Ni, B., Ma, Q., Bortnik, J., Chen, L., Baker, D. N., Spence, H. E., Reeves, G. D., Henderson, M. G., Kletzing, C. A., Kurth, W. S., Hospodarsky, G. B., Blake, J. B., Fennell, J. F., Claudepierre, S. G., and Kanekal, S. G.: Rapid local acceleration of relativistic radiation-belt electrons by magnetospheric chorus, Nature, 504, 411–414, https://doi.org/10.1038/nature12889, 2013.
Verronen, P. T., Turunen, E., Ulich, T., and Kyrola, E.: Modelling the effects of the October 1989 solar proton event on mesospheric odd nitrogen using a detailed ion and neutral chemistry model, Ann. Geophys., 20, 1967–1976, 2002.
Wait, J. R. and Spies, K. P.: Characteristics of the Earth-ionosphere waveguide for VLF radio waves, NBS Tech. Note 300, available at: http://nova.stanford.edu/ vlf/IHY_Test/Tutorials/SfericsAndTweaks/Papers/Wait1964f.pdf (last access: 12 May 2015), 1964.
