The powerful magnetic is dipolar (like the Earth) at distances greater than 3 times the radius of Jupiter (3RJ). However, closer to the planet the magnetic field is much more complex featuring quadrupole and octopole components superimposed on the dipolar field - like harmonics on a musical scale.
Strength at cloudtops
4.2 gauss
10 x Earth
Inclination
10.8º with respect to the rotational axis
Polarity
Opposite to Earth.
That is to say that if a terrestrial magnetic compass were taken to Jupiter it would point to the south pole.
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