Vibrational density of states power spectrum (in black) and P(E_kin) (red) for water molecules A and B, W_A (panel A) and W_B (panel B), on the ASW surface at several delay times after the formation of CO₂ on the RKHS-PES. The IR bands at 1600 − 1750 and 3200 − 3600 cm⁻¹ correspond to bending and OH-stretching modes (Hagen & Tielens 1981; Yu et al. 2020; Devlin 1990). Panel C reports the kinetic energy distribution (red) and the vDOS of the CO₂ molecule. Top panel: Averaged vDOS spectrum and kinetic energy distribution for ten water molecules away from the recombination site determined for the 0.5 ps prior to CO₂ formation. Subsequent panels are labeled with the time interval after CO₂ recombination. See Figure A.4 for an analysis of a trajectory using the MMH PES.