Stefani S.,Institute of Astrophysics and Planetary Science |
Piccioni G.,Institute of Astrophysics and Planetary Science |
Snels M.,Institute of Astrophysics and Planetary Science |
Snels M.,Institute of Atmospheric Science and Climare |
And 2 more authors.
Journal of Quantitative Spectroscopy and Radiative Transfer | Year: 2013
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 30,000cm-1 (0.33 - 12.5 μm) with a resolution from 0.06 to 10cm-1. A dedicated gas cell, designed to support pressures up to 200bar and temperatures up to 350°C, has been coupled to the FT-IR. Starting from a realistic vertical pressure-temperature profile of the Venus' atmosphere, based on measurements performed with atmospheric probes, we have recorded a series of absorption spectra of CO2, varying the pressure and temperature from 1 to 50bar and from 294 to 650K. © 2012 Elsevier Ltd.