We calculated the change of the magnetic flux through the surface encircled
by the Earth's orbit. This change is associated with the magnetic flux tra
nsfer by the solar wind flow and exhibits clear 22-year periodicity. The ma
gnetic flux transferred by the solar wind is of the same order of magnitude
as the flux of the main solar magnetic held through the northern hemispher
e of the Sun. There seems to be a feedback between the solar wind and the s
olar magnetism.