Predictability of weather and climate

Abstract:

An extension of Cowling's neutral point argument shows that no axisymmetric poloidal magnetic field can be maintained by self-exciting dynamo action in an electrically-conducting fluid against the dissipative effects of Ohmic heating. This generalizes previous results to cases where the magnetic field can be non-steady, the fluid compressible and the (scalar) coefficients of magnetic permeability and electrical conductivity dependent on position and time. © Gordon and Breach Science Publishers Inc., 1982