Ground magnetic perturbation due to external ionospheric current for a solar minimum and maximum year

The ground magnetic perturbations are calculated using the 3D ionospheric current system based on a stand-alone electrodynamo module using the neutral winds, ionospheric conductivities and high latitude potential from the Thermosphere-Ionosphere-Electrodynamics GCM (TIEGCM). The TIEGCM is driven at its 97 km lower boundary by 27 day averaged diurnal perturbations from a Thermosphere-Ionosphere-Mesosphere-Electrodynamics GCM (TIMEGCM) simulation using MERRA reanalysis data at the 30km TIMEGCM boundary. For details of the TIEGCM simulation please see Maute (2017). Effects of gravity and plasma pressure gradient driven ionospheric currents are included. At high latitude the Heelis ion convection is employed driven by 3-hourly Kp values. Two TIEGCM simulations are conducted, one for the solar minimum year 2009 and one for the solar maximum year 2002 by using the corresponding F10.7 and Kp values for that year. The lower boundary of TIEGCM, which simulates year 2009 conditions, was not changed for the 2002 simulation, since the 2002 simulation was used to derived dominant ionospheric current patterns and not to study the evolution of the current system. The data set is associated with the manuscript "Modeling Diurnal Variation Magnetic Fields due to Ionospheric Currents" by G. Egbert, P Alken, A. Maute and H. Zhang submitted to Geophysical Journal International.

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Questions? Email Resource Support Contact:

  • Astrid Maute
    UCAR/NCAR - High Altitude Observatory


Resource Type dataset
Temporal Range Begin N/A
Temporal Range End N/A
Temporal Resolution N/A
Bounding Box North Lat 90.0
Bounding Box South Lat -90.0
Bounding Box West Long -180.0
Bounding Box East Long 180.0
Spatial Representation N/A
Spatial Resolution N/A
Related Links

Thermosphere-Ionosphere-Electrodynamics General Circulation Model for the Ionospheric Connection Explorer: TIEGCM-ICON : Maute, A. (2017). Space science reviews, 212(1-2), 523-551.

Additional Information N/A
Resource Format application/x-netcdf
Standardized Resource Format NetCDF
Asset Size N/A
Legal Constraints

Creative Commons Attribution 4.0 International License.

Access Constraints None
Software Implementation Language N/A

Resource Support Name Astrid Maute
Resource Support Email
Resource Support Organization UCAR/NCAR - High Altitude Observatory
Distributor N/A
Metadata Contact Name GDEX Curator
Metadata Contact Email
Metadata Contact Organization UCAR/NCAR - GDEX

Author Maute, Astrid
Publisher UCAR/NCAR - GDEX
Publication Date 2020-10-09
Digital Object Identifier (DOI)
Alternate Identifier N/A
Resource Version N/A
Topic Category N/A
Progress N/A
Metadata Date 2022-01-27T09:12:22-07:00
Metadata Record Identifier edu.ucar.gdex::51954d16-4870-457f-ac07-3dbb1c8f65e1
Metadata Language eng; USA
Suggested Citation Maute, Astrid. (2020). Ground magnetic perturbation due to external ionospheric current for a solar minimum and maximum year. UCAR/NCAR - GDEX. Accessed 22 September 2023.

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