One contribution to the magnetic field of the Earth often varying rapidly in time and space has its sources in near Earth space. These magnetic signatures are from electric current systems in the magnetosphere and ionosphere, driven by solar radiation or thermospheric winds.

During quiet periods the amplitude of these external contributions are about 20 nT at mid-latitudes, increasing to more than ten- or hundred-fold during geomagnetic storms at all latidudes. The quantification of these geomagnetic sources allows the investigation of the near Earth space.

• SWAMI - Space Weather Atmosphere Model and Indices
• A global diagnosis of vertical atmospheric coupling by geomagnetic field variations
• Separating multidecadal internal geomagnetic secular variation and long-term magnetospheric field variations
• Main field influence on equatorial ionosphere
• Spatial and temporal structures of equatorial F region plasma depletions
• Swarm-AEBS - Auroral Electrojet and auroral Boundaries estimated from Swarm observations