[Telepathic Intruder]

Earth’s magnetic field is caused by currents in the liquid iron outer core, which in turn are caused by the Coriolis effect of the earth’s spin, similar to how hurricanes are caused by winds moving north or south, experiencing different rotational speeds. Currents in an electrically conducting fluid are capable of retaining a magnetic field according to the dynamo theory.

[dhs12345]

The Sun is in a solar minimum, the earths mag field is moving. Induction happens all of the time. I wonder if the movement of the fluid in the core is a result of the solar mag field. At least in part. Is the core ferrous? Wonder too if core has hysteresis.

[Wonder Warthog]

"Earth’s magnetic field is caused by currents in the liquid iron outer core, which in turn are caused by the Coriolis effect of the earth’s spin, similar to how hurricanes are caused by winds moving north or south, experiencing different rotational speeds. Currents in an electrically conducting fluid are capable of retaining a magnetic field according to the dynamo theory."

True...but that same conducting medium is also moving within the sun's field, therefore it too must generate currents in said conducting medium...a mechanism that allows for direct transfer of solar energy into the earth's energy balance that does not involve photons. The cause and required effect are basic simple physics, but how does it cascade through the complexity of the earths ecosystem.