The sun at the apex of a current solar sunspot maximum is throwing wave upon wave of electromagnetic disturbances outward through it's magnetic field. In addition, enormous clouds of electrically charged particles are slamming against the earth's magnetic field bending and reshaping it. All of this adds up to changes in magnetic flux and the magnetic field of both the sun and the earth. The earth is a dynamo generating electricity within the planet by the spinning core. This is the source of the magnetic field that surrounds earth.
Resistance causes electricity to generate heat as it flows through a conductor.
Therefore, heat within the earth is generated by gravitational pressure and by resistance to electrical current flow between the poles. Greater current flow has more resistance and generates more heat. If additional current flow is being generated by electromagnetic induction, then internal temperature would increase proportional to the amount of extra current flow. The increase in internal temperature is radiated through the crust beneath the oceans thereby causing an increase in ocean temperature. Later the atmosphere is heated by the increasing ocean temperatures and thereby causes global weather changes.