Convenor: Gillian Turner (New Zealand)
Co-Convenors: Aleksey Smirnov (USA), Alexandre Fournier (France), Florian Lhuillier (Germany)

We invite contributions on the variation of the internal geomagnetic field (paleo-directions and/or paleointensity) on all time scales, from years to thousands, millions and billions of years. Potential topics include, but are not limited to, the strength, morphology, and stability of the field, the frequency and process of polarity reversal, and the relation between excursions and secular variation.

We welcome contributions ranging from paleomagnetic field investigations, to numerical dynamo simulations, and theoretical studies.