  This paper explores a possible linkage between solar motion about the solar
system center of mass and the quasi-periodicity evident in the pressure and
temperature of planet atmospheres. We establish that dominant mid frequency
range periodicity in planet atmospheres corresponds closely to the harmonic
series 39.5/n = TA/n years where n = 2, 3, 4, etc. We establish that the period
TA = 39.5 years is the interval between acceleration impulses experienced by
the Sun as it passes close to the solar system center of mass and that the time
sequence of impulses generates the spectral harmonic series TA/n that is
observed in the periodicity of climate indices like the North Atlantic
Oscillation and the Quasi Biennial Oscillation. We develop a model of a simple
harmonic oscillator responding to periodic acceleration impulses and show that
the response duplicates several features of the Quasi Biennial Oscillation. We
conclude that oscillatory phenomena observed in solar activity and in planet
atmosphere variability could be due to the response of the various natural
oscillatory modes to impulsive Sun acceleration associated with planetary
motion.
