Special Issue: Geomagnetic Field Modelling and IGRF 2000
Improving the modelling of the geomagnetic main-field: Isolating the average ionospheric field in satellite data
Earth, Planets and Space volume 52, pages 1199–1206 (2000)
Olsen’s method (Olsen, 1996) is applied to Magsat magnetic field data to deduce average quiet-time and active-time ionospheric current systems at middle to high North and South latitudes. Spot magnetic field values at ground level are calculated from the average models and are ‘ground-truthed’ against observatory data. The results suggest that synoptic ionospheric models from Magsat-quality satellite data may be helpful in reducing the contamination of the main-field by non-field-aligned ionospheric sources. We discuss how the technique may be applied to data from the Ørsted mission and the extent to which these ionospheric field models may therefore be useful in improved modelling of the geomagnetic main field.
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Thomson, A.W.P. Improving the modelling of the geomagnetic main-field: Isolating the average ionospheric field in satellite data. Earth Planet Sp 52, 1199–1206 (2000). https://doi.org/10.1186/BF03352352
- Satellite Data
- Auroral Zone
- Magnetic Local Time
- Ionospheric Model
- Auroral Oval