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Fig. 12

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AW-associated density ratio amplitudes of (a) O+, (b) O2+${\rm{O}}_2^ + $, and (c) CO2+${\rm{CO}}_2^ + $ for three scenarios. Neutral density ratio amplitude is also plotted and marked by ρn1/ρn0. Input parameters of the AW wave mode are τ = 4.2 min, λn = 80 km, kzl=0.11$k_z^l = 0.11$, and cp = 321 m s−1.

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