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P. K. Rajesh, Liu, J. Y., Hsu, M. L., Lin, C. H., Oyama, K. I., and Paxton, L. J., Ionospheric electron content and NmF2 from nighttime OI 135.6 nm intensity, Journal of Geophysical Research, vol. 116, no. A2, 2011.
T. S. Ram, Lei, J., Su, S. - Y., Liu, C. H., Lin, C. H., and Chen, W. S., Dayside ionospheric response to recurrent geomagnetic activity during the extreme solar minimum of 2008, Geophysical Research Letters, vol. 37, no. 2, p. n/a - n/a, 2010.
K. G. Ratovsky and Chernihiv, M. A., Simulation of the system response of the thermosphere ionosphere on FLASH stratospheric warming in 2008 and 2009, Space Research, vol. 51, no. 1, pp. 62-72, 2013.
Z. Ren, Wan, W., Xiong, J., and Liu, L., Simulated wave number 4 structure in equatorial F -region vertical plasma drifts, Journal of Geophysical Research, vol. 115, no. A5, 2010.
J. M. Retterer, Forecasting low-latitude radio scintillation with 3-D ionospheric plume models: 1. Plume model, Journal of Geophysical Research, vol. 115, no. A3, 2010.
P. G. Richards, Meier, R. R., Chen, S. - P., Drob, D. P., and Dandenault, P., Investigation of the causes of the longitudinal variation of the electron density in the Weddell Sea Anomaly, Journal of Geophysical Research: Space Physics, vol. 122, no. 6, pp. 6562 - 6583, 2017.
P. G. Richards, Meier, R. R., and Wilkinson, P. J., On the consistency of satellite measurements of thermospheric composition and solar EUV irradiance with Australian ionosonde electron density data, Journal of Geophysical Research, vol. 115, no. A10, 2010.
P. G. Richards, Meier, R. R., Chen, S., and Dandenault, P., Investigation of the Causes of the Longitudinal and Solar Cycle Variation of the Electron Density in the Bering Sea and Weddell Sea Anomalies, Journal of Geophysical Research: Space Physics, vol. 123, no. 9, pp. 7825 - 7842, 2018.
P. G. Richards, Nicolls, M. J., St.-Maurice, J. - P., Goodwin, L., and Ruohoniemi, J. M., Investigation of sudden electron density depletions observed in the dusk sector by the Poker Flat, Alaska incoherent scatter radar in summer, Journal of Geophysical Research: Space Physics, vol. 119, no. 12, pp. 10,608 - 10,620, 2014.
A. D. Richmond and Fang, T. - W., Electrodynamics of the equatorial evening ionosphere: 2. Conductivity influences on convection, current, and electrodynamic energy flow, Journal of Geophysical Research: Space Physics, p. n/a - n/a, 2015.
H. Rishbeth, Meddillo, M., Huang, C. - L., Pi, X., and Meier, R., Morphology of the equatorial anomaly and equatorial plasma bubbles using image subspace analysis of Global Ultraviolet Imager data, Journal of Geophysical Research-Part A-Space Physics , vol. 110, no. A11, 2005.
H. Rishbeth and Müller-Wodarg, I. C. F., Why is there more ionosphere in January than in July? The annual asymmetry in the F2-layer, in Annales Geophysicae, 2006.
R. Robinson, Zhang, Y., Garcia‐Sage, K., Fang, X., Verkhoglyadova, O. P., Ngwira, C., Bingham, S., Kosar, B., Zheng, Y., Kaeppler, S., Liemohn, M., Weygand, J. M., Crowley, G., Merkin, V., McGranaghan, R., and Mannucci, A. J., Space Weather Modeling Capabilities Assessment: Auroral Precipitation and High‐Latitude Ionospheric Electrodynamics, Space Weather, vol. 17, no. 2, pp. 212 - 215, 2019.
R. M. Robinson, Zhang, Y., Anderson, B. J., Zanetti, L. J., Korth, H., and Fitzmaurice, A., Statistical Relations Between Field-Aligned Currents and Precipitating Electron Energy Flux, Geophysical Research Letters, vol. 45, no. 17, pp. 8738 - 8745, 2018.
F. S. Rodrigues, Hysell, D. L., and de Paula, E. R., Coherent backscatter radar imaging in Brazil: large-scale waves in the bottomside F-region at the onset of equatorial spread F, in Annales Geophysicae, 2008.
P. L. Rothwell, Jasperse, J. R., and Grossbard, N. J., Comparison of penetration electric fields created by the solar wind with Jicamarca data using SWAGE, Journal of Geophysical Research, vol. 117, no. A9, 2012.
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Y. Sahai, Becker-Guedes, F., Fagundes, P. R., Lima, W. L. C., De Abreu, A. J., Guarnieri, F. L., Candido, C. M. N., and Pillat, V. G., Unusual ionospheric effects observed during the intense 28 October 2003 solar flare in the Brazilian sector, in Annales Geophysicae, 2008.
Y. Sahai, Fagundes, P. R., de Jesus, R., de Abreu, A. J., Crowley, G., Kikuchi, T., Huang, C. - S., Pillat, V. G., Guarnieri, F. L., Abalde, J. R., and Bittencourt, J. A., Studies of ionospheric F-region response in the Latin American sector during the geomagnetic storm of 21–22 January 2005, Annales Geophysicae, vol. 29, no. 5, pp. 919 - 929, 2011.
Y. Sahai, de Jesus, R., Fagundes, P. R., Selhorst, C. L., de Abreu, A. J., S. Ram, T., Aragon-Angel, A., Pillat, V. G., Abalde, J. R., Lima, W. L. C., and Bittencourt, J. A., Effects observed in the equatorial and low latitude ionospheric F-region in the Brazilian sector during low solar activity geomagnetic storms and comparison with the COSMIC measurements, Advances in Space Research, vol. 50, no. 10, pp. 1344 - 1351, 2012.
C. Csar Jude Salinas, Chang, L. C., Liang, M. - C., Yue, J., Russell, J., and Mlynczak, M., Impacts of SABER CO 2 -based eddy diffusion coefficients in the lower thermosphere on the ionosphere/thermosphere, Journal of Geophysical Research: Space Physics, vol. 121, no. 12, pp. 12,080 - 12,092, 2016.
I. Sandahl, Sergienko, T., and Brändström, U., Fine structure of optical aurora, Journal of Atmospheric and Solar-Terrestrial Physics, vol. 70, pp. 2275–2292, 2008.
L. Scherliess, Thompson, D. C., and Schunk, R. W., Longitudinal variability of low-latitude total electron content: Tidal influences, Journal of Geophysical Research, vol. 113, no. A1, 2008.
G. Schmidtke, Eparvier, F. G., Solomon, S. C., Tobiska, W. K., and Woods, T. N., The TIGER (thermospheric–ionospheric geospheric research) program: Introduction, Advances in Space Research, vol. 37, no. 2, pp. 194 - 198, 2006.
C. J. Scott, Jones, S., and Barnard, L. A., Inferring thermospheric composition from ionogram profiles: A calibration with the TIMED spacecraft, Annales Geophysicae Discussions, pp. 1 - 16, 2019.
S. Sharma, Galav, P., Dashora, N., and Pandey, R., Longitudinal study of the ionospheric response to the geomagnetic storm of 15 May 2005 and manifestation of TADs, Annales Geophysicae, vol. 29, no. 6, pp. 1063 - 1070, 2011.
C. Sheng, Deng, Y., Yue, X., and Huang, Y., Height-integrated Pedersen conductivity in both E and F regions from COSMIC observations, Journal of Atmospheric and Solar-Terrestrial Physics, vol. 115-116, pp. 79 - 86, 2014.
G. G. Shepherd and Cho, Y. - M., Stationary depletions in thermospheric atomic oxygen concentration and mass density observed with WINDII, GUVI, GOCE and simulated by NRLMSISE-00, Journal of Atmospheric and Solar-Terrestrial Physics, vol. 164, pp. 29 - 38, 2017.
G. G. Shepherd and Shepherd, M. G., High-Latitude Observations of a Localized Wind Wall and Its Coupling to the Lower Thermosphere, Geophysical Research Letters, vol. 45, no. 10, pp. 4586 - 4593, 2018.
G. G. Shepherd, Thuillier, G., Cho, Y. - M., Duboin, M. - L., Evans, W. F. J., Gault, W. A., Hersom, C., Kendall, D. J. W., Lathuillère, C., Lowe, R. P., McDade, I. C., Rochon, Y. J., Shepherd, M. G., Solheim, B. H., Wang, D. - Y., and Ward, W. E., The Wind Imaging Interferometer (WINDII) on the Upper Atmosphere Research Satellite: A 20 year perspective, Reviews of Geophysics, vol. 50, no. 2, 2012.
B. G. Shpynev, Zolotukhina, N. A., Polekh, N. M., Ratovsky, K. G., Chernigovskaya, M. A., Belinskaya, A. Y., Stepanov, A. E., Bychkov, V. V., Grigorieva, S. A., Panchenko, V. A., Korenkova, N. A., and Mielich, J., The ionosphere response to severe geomagnetic storm in March 2015 on the base of the data from Eurasian high-middle latitudes ionosonde chain, Journal of Atmospheric and Solar-Terrestrial Physics, vol. 180, pp. 93 - 105, 2018.
P. R. Shreedevi and Choudhary, R. K., Impact of Oscillating IMF B z During 17 March 2013 Storm on the Distribution of Plasma Over Indian Low-Latitude and Mid-Latitude Ionospheric Regions, Journal of Geophysical Research: Space Physics, vol. 122, no. 11, pp. 11,607 - 11,623, 2017.
P. R. Shreedevi, Thampi, S. V., Chakrabarty, D., Choudhary, R. K., Pant, T. Kumar, Bhardwaj, A., and Mukherjee, S., On the latitudinal changes in ionospheric electrodynamics and composition based on observations over the 76-77°E meridian from both hemispheres during a geomagnetic storm, Journal of Geophysical Research: Space Physics, 2016.
P. R. Shreedevi, Choudhary, R. K., Yu, Y., and Thomas, E. G., Morphological study on the ionospheric variability at Bharati, a polar cusp station in the southern hemisphere, Journal of Atmospheric and Solar-Terrestrial Physics, vol. 193, p. 105058, 2019.
J. Shuai, Zhang, S. D., Huang, C. M., YI, F., Huang, K. M., Gan, Q., and Gong, Y., Climatology of global gravity wave activity and dissipation revealed by SABER/TIMED temperature observations, Science China Technological Sciences, vol. 57, no. 5, pp. 998 - 1009, 2014.
D. Shultz, 'Space bubbles' may have led to deadly battle in Afghanistan, Science AAAS, 2014. [Online]. Available: http://news.sciencemag.org/earth/2014/09/space-bubbles-may-have-led-deadly-battle-afghanistan.
L. N. Sidorova and Filippov, S. V., Four-peak longitudinal distribution of the equatorial plasma bubbles observed in the topside ionosphere: Possible troposphere tide influence, Advances in Space Research, vol. 61, no. 6, pp. 1412 - 1424, 2018.
K. G. Simi, Manju, G., Haridas, M. K. Madhav, Nayar, S. R. Prabhak, Pant, T. Kumar, and Alex, S., Ionospheric response to a geomagnetic storm during November 8–10, 2004, Earth, Planets and Space, vol. 65, no. 4, pp. 343 - 350, 2013.
G. Sivavaraprasad, D. Ratnam, V., R. Padmaja, S., Sharvani, V., Saiteja, G., Mounika, Y. S. R., and P. Harsha, B. Sree, Detection of ionospheric anomalies during intense space weather over a low-latitude GNSS station, Acta Geodaetica et Geophysica, vol. 52, no. 4, pp. 535 - 553, 2017.
E. Slominska, Blecki, J., Lebreton, J. - P., Parrot, M., and Slominski, J., Seasonal trends of nighttime plasma density enhancements in the topside ionosphere, Journal of Geophysical Research: Space Physics, vol. 119, no. 8, pp. 6902 - 6912, 2014.
J. J. Sojka, David, M., Schunk, R. W., and Heelis, R. A., A modeling study of the longitudinal dependence of storm time midlatitude dayside total electron content enhancements, Journal of Geophysical Research, vol. 117, no. A2, 2012.
D. Solomentsev, Cherniak, Y., Titov, A., Khattatov, B., and Khattatov, V., Towards estimation of atmospheric tidal effects on the ionosphere via data assimilation, Advances in Space Research, vol. 56, no. 9, pp. 1854 - 1862, 2015.
S. C. Solomon, Numerical models of the E-region ionosphere, Advances in Space Research, vol. 37, no. 5, pp. 1031 - 1037, 2006.
S. C. Solomon, Burns, A. G., Emery, B. A., Mlynczak, M. G., Qian, L., Wang, W., Weimer, D. R., and Wiltberger, M., Modeling studies of the impact of high-speed streams and co-rotating interaction regions on the thermosphere-ionosphere, Journal of Geophysical Research, vol. 117, 2012.
S. C. Solomon, Global modeling of thermospheric airglow in the far ultraviolet, Journal of Geophysical Research: Space Physics, vol. 122, no. 7, pp. 7834 - 7848, 2017.
S. C. Solomon, Qian, L., and Burns, A. G., The anomalous ionosphere between solar cycles 23 and 24, Journal of Geophysical Research: Space Physics, vol. 118, no. 10, pp. 6524 - 6535, 2013.
T. Sori, Shinbori, A., Otsuka, Y., Tsugawa, T., and Nishioka, M., Characteristics of GNSS total electron content enhancements over the mid‐latitudes during a geomagnetic storm on November 7 and 8, 2004, Journal of Geophysical Research: Space Physics, 2019.

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