The study looked at how seasonal changes in neutral winds affect the connection between the North and South Hemispheres in Earth's magnetic field. By using a model that considers the Earth's magnetic field and the flow of electric currents in the ionosphere, the researchers found that the strength of these connections varies throughout the year. During solstice seasons, when the neutral winds are stronger, the currents and potential differences in the ionosphere are higher compared to equinox seasons. This leads to stronger connections between the hemispheres, especially in winter.