a) Resistive and viscous dissipation as a function of η for three different values of ν (ν = 0.005,   0.003,   0.001). We note that the Ohmic dissipation rates are effectively unchanged despite the differing values of viscosity. b) Resistive and viscous dissipation for ν = 0.003, with the latter separated into contributions from the global background field and the disturbance field. The dotted line indicates η¹ scaling in both panels.