Ionosphere-thermosphere coupling during the 22-23 June 2015 geomagnetic storm: Swarm and FPI coordinated observations above the Oukaimeden observatory

F. Pitout, A. Loutfi, A. Bounhir, S. C. Buchert, Z. Benkhaldoun, J. J. Makela

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We investigate the response of the ionosphere-thermosphere coupled system to the 22-23 June 2015 geomagnetic storm in the region above the Oukaimeden observatory in Morocco with a Fabry-Perot interferometer and the Swarm satellites. The measured thermospheric neutral winds are strong enough to have two direct consequences. First, they create a strong asymmetry in the equatorial ionisation crests on both sides of the magnetic equator (actually, they make the southern hemisphere crest disappear). This asymmetry is explained by the southerly thermospheric neutral wind that was blowing during the storm and is shown to be favoured by the season. Second, within the northern hemisphere ionisation crest, Swarm A and C detect km-size electron density structures. Those may be ascribed to gradient drift instability.

Original languageEnglish (US)
Title of host publication2021 34th General Assembly and Scientific Symposium of the International Union of Radio Science, URSI GASS 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9789463968027
DOIs
StatePublished - Aug 28 2021
Externally publishedYes
Event34th General Assembly and Scientific Symposium of the International Union of Radio Science, URSI GASS 2021 - Rome, Italy
Duration: Aug 28 2021Sep 4 2021

Publication series

Name2021 34th General Assembly and Scientific Symposium of the International Union of Radio Science, URSI GASS 2021

Conference

Conference34th General Assembly and Scientific Symposium of the International Union of Radio Science, URSI GASS 2021
Country/TerritoryItaly
CityRome
Period8/28/219/4/21

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Instrumentation
  • Radiation

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