Relative difference between the complex wavenumber obtained in this work (Eq. (103)) on the one hand, and the real one given by CL70 for Earth atmospheric tides ( ) on the other hand. The difference η, given by Eq. (158), is plotted in logarithmic scale as a function of the normalized tidal frequency σ/σ₀ and of the ratio h_c/h_n. The colour of the map, denoted c, is defined by the expression c = log (η). The horizontal and vertical axis represent f⁽σ/σ₀⁾ and , where f is the function defined by with X ∈R. The positions of the planets are determined by the gravity mode of degree 0 in the case of the semidiurnal tide. Dark (luminous) regions correspond to the dynamic (dissipative) regime. The vertical wavenumbers of Venus are strongly affected by dissipative processes, while those of the Earth are not.