Mesospheric Thermal Excitation and Node of the Seraidinrnal Atmospheric Oscillation (Part II)

[摘要] Thermal excitation as the cause of semidiurnal atmospheric oscillations is discussed in continuation of Part I (Sawada, 1962), special emphasis being put upon the effects of the temperature profile on the formation of node around 30 km.An atmospheric temperature profile is designed so that mathematical treatment becomes very simple, but it approximates the real profile. The result shows that the temperature profile does not affect the conclusion obtained for an isothermal atmosphere discussed in Part I, and a mesospheric thermal excitation produces a nodal surface around 30 km for pressure and wind oscillations, but no node for the vertical motion.

[学科分类] 大气科学