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Experimental CO₂ absorption coefficients at high pressure and high temperature

Piccioni, Giuseppe; Adriani, Alberto; Grassi, Davide +2 more

Here we present a laboratory study of CO₂ absorption spectra, obtained at high temperatures and pressures, similar to those encountered in the Venusian atmosphere. These spectra have been recorded using a Fourier Transform InfraRed (FT-IR) spectrometer , which is equipped to operate from 800 to 30,000 cm^-1 (0.33-12.5 µm…

Assignment and rotational analysis of new absorption bands of carbon dioxide isotopologues in Venus spectra

Vandaele, A. C.; Robert, S.; Wilquet, V. +7 more

We present absorption bands of carbon dioxide isotopologues, detected by the Solar Occultation for the Infrared Range (SOIR) instrument on board the Venus Express Satellite. The SOIR instrument combines an echelle spectrometer and an Acousto-Optical Tunable Filter (AOTF) for order selection. It performs solar occultation measurements in the Venus …