EGU24-6566, updated on 08 Mar 2024
https://doi.org/10.5194/egusphere-egu24-6566
EGU General Assembly 2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Ionospheric Conductance Derived from Satellite Measurments: Limitations and Implications

Pouya Pourkarim1 and David Knudsen2
Pouya Pourkarim and David Knudsen
  • 1University of Calgary, Physics and Astronomy, Canada (pouya.pourkarim@ucalgary.ca)
  • 2University of Calgary, Physics and Astronomy, Canada (knudsen@ucalgary.ca)
Ionospheric Pedersen conductance ∑P can be remotely measured using electric and perturbation magnetic fields measured above the high – latitude ionosphere, subject to assumptions of sheet – like current systems, quasi – static electric and magnetic fields, neglect of magnetic perturbations generated by Hall currents, and locally constant ∑P (Sugiura et al., 1982). Using Swarm measurements, we see large variability and lower – than expected magnitudes at small scales, and dawn – dusk asymmetries in large scales of ∑P upon comparison with existing models and results. To rectify the observed discrepancies, we revisit the underlying assumptions, provide root – cause analysis, and discuss the implications.

How to cite: Pourkarim, P. and Knudsen, D.: Ionospheric Conductance Derived from Satellite Measurments: Limitations and Implications, EGU General Assembly 2024, Vienna, Austria, 14–19 Apr 2024, EGU24-6566, https://doi.org/10.5194/egusphere-egu24-6566, 2024.

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