General-planetary character of three-dimensional planetary waves propagation in lower and upper Earth atmosphere

A new branch of planetary Rossby waves is found taking into account latitudinal gradient of horizontal component of the earth rotation's angular velocity. Frequencies of a new branch and ordinary Rossby waves numerically coincide but strongly differ on character of dispersion. The general condition naturally “filtering” planetary waves in the long-wave approximation and internal inertial waves in the short-wave approximation was established.