Important equatorial climate phenomena such as QBO and ENSO (El Nino) have never been adequately explained as deterministic processes – that is exhibiting a behavior that may be predictable. This paper suggests that QBO, ENSO, along with the geophysical behavior known as the Chandler wobble may share a common origin of lunar and solar tidal forcing. Through analytical approximations of fluid dynamics and detailed time-series analysis, matching quantitative models of these behaviors can be shown.