Articles | Volume 38, issue 1
https://doi.org/10.5194/angeo-38-191-2020
https://doi.org/10.5194/angeo-38-191-2020
Regular paper
 | 
07 Feb 2020
Regular paper |  | 07 Feb 2020

Swarm field-aligned currents during a severe magnetic storm of September 2017

Renata Lukianova

Related subject area

Subject: Earth's ionosphere & aeronomy | Keywords: Ionosphere–magnetosphere interactions
Ionospheric upwelling and the level of associated noise at solar minimum
Timothy Wemimo David, Chizurumoke Michael Michael, Darren Wright, Adetoro Temitope Talabi, and Abayomi Ekundayo Ajetunmobi
Ann. Geophys., 42, 349–354, https://doi.org/10.5194/angeo-42-349-2024,https://doi.org/10.5194/angeo-42-349-2024, 2024
Short summary
Three principal components describe the spatiotemporal development of mesoscale ionospheric equivalent currents around substorm onsets
Liisa Juusola, Ari Viljanen, Noora Partamies, Heikki Vanhamäki, Mirjam Kellinsalmi, and Simon Walker
Ann. Geophys., 41, 483–510, https://doi.org/10.5194/angeo-41-483-2023,https://doi.org/10.5194/angeo-41-483-2023, 2023
Short summary
Parallel electric fields produced by ionospheric injection
Osuke Saka
Ann. Geophys., 41, 369–373, https://doi.org/10.5194/angeo-41-369-2023,https://doi.org/10.5194/angeo-41-369-2023, 2023
Short summary
A comparison of Jason-2 plasmasphere electron content measurements with ground-based measurements
Andrew J. Mazzella Jr. and Endawoke Yizengaw
Ann. Geophys., 41, 269–280, https://doi.org/10.5194/angeo-41-269-2023,https://doi.org/10.5194/angeo-41-269-2023, 2023
Short summary
Multi-instrument observations of polar cap patches and traveling ionospheric disturbances generated by solar wind Alfvén waves coupling to the dayside magnetosphere
Paul Prikryl, Robert G. Gillies, David R. Themens, James M. Weygand, Evan G. Thomas, and Shibaji Chakraborty
Ann. Geophys., 40, 619–639, https://doi.org/10.5194/angeo-40-619-2022,https://doi.org/10.5194/angeo-40-619-2022, 2022
Short summary

Cited articles

Aikio, A. T., Opgenoorth, H. J., Persson, M. A. L., and Kaila, K. U.: Ground based measurements of an arc-associated electric field, J. Atmos. Terr. Phys., 55, 797–808, https://doi.org/10.1016/0021-9169(93)90021-P, 1993. 
Aikio, A. T., Lakkala, T., Kozlovsky, A., and Williams, P. J. S.: Electric fields and currents of stable drifting auroral arcs in the evening sector, J. Geophys. Res., 107, 1424, https://doi.org/10.1029/2001JA009172, 2002. 
Akasofu, S.-I.: The development of the auroral substorm, Planet. Space Sci., 12, 273–282, https://doi.org/10.1016/0032-0633(64)90151-5, 1964. 
Anderson, B. J. and Korth, H.: Saturation of global field aligned currents observed during storms by the Iridium satellite constellation, J. Atmos. Sol.-Terr. Phy., 69, 166–169, https://doi.org/10.1016/j.jastp.2006.06.013, 2007. 
Anderson, B. J., Ohtani, S.-I., Korth, H., and Ukhorskiy, A.: Storm time dawn-dusk asymmetry of the large-scale Birkeland currents, J. Geophys. Res., 110, A12220, https://doi.org/10.1029/2005JA011246, 2005. 
Download
Short summary
During the most intense storm of solar cycle 24, the magnetosphere–ionosphere interaction, which is primarily associated with field-aligned currents (FACs), was much stronger than usual. Measurements onboard the low-latitude polar-orbiting Swarm satellites have shown that the intensities of FACs increase dramatically during the storm-time substorms. The extreme values of 1 s (7.5 km width) FACs reach 80 μA m−2. The lowest latitude of the FAC region is limited to 49–50 MLat.