The cause and the effect of the 18.6 yr nodal tide in the Barents Sea

The lunar node is the intersection between the moon plane and the ecliptic plane to the sun. This intersection moves 360° in 18.6 years and causes the lunar nodal cycle (Fig. 1). A 5 degree oscillation between the planes causes an oscillating gravity force and a 18.6 year tide on the earth. This small lunar nodal tide may have an important influence on climate change dynamics.