Figure 2From: Reaction of electric and meteorological states of the near-ground atmosphere during a geomagnetic storm on 5 April 2010Development of the geomagnetic storm and graphs of measurements. Development of the geomagnetic storm (dashed line shows the beginning) on 5 to 6 April 2010 and measurements of the (a) magnetic field ΔH, (b) conduction current density, and (c) air unipolarity (λ+/λ−).Back to article page