Fig. 2
Weighting functions in the Venus atmosphere for three weak transitions used in our calculations: (red) CO2 at 1350.40 cm-1, (green) SO2 at 1350.16 cm-1, and (blue) HDO at 1350.30 cm-1 (Doppler-shifted frequencies). The mixing ratios of SO2 and H2O are, respectively, 100 ppb and 1 ppm (with D/H = 200 times the terrestrial ratio). Black line: temperature vertical profile.
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