Solar Oscillations, Sunspot Cycles, and Climatic Change

The important part played by impulses of the torque has been substantiated by solar cycles of different length and diverse function. It is now thought possible to calculate the epochs, phase, and amplitude of these cycles from the wave pattern of variations in impulses of the torque. Several approaches are considered promising for explaining the observations quantitatively. Magnetohydrodynamic instabilities and turbulence may be involved; spin-orbit coupling is considered another possibility. It is pointed out that the sun revolving around the solar system's center of mass and the sun rotating in its axis can be regarded as coupled oscillators capable of internal resonance resulting in slight positive or negative accelerations in the sun's spin. Coupling could arise from the sun's motion through its own magnetic fields.