Sulfur and Oxygen Chemistry and the Stability of Carbon Dioxide in Venus’ Atmosphere
Abstract
Venus’ atmosphere has a rich chemistry whose primary cycles are believed known but whose details are either unknown or unverified by mutual agreement among observations, laboratory studies, and numerical models. Spacecraft and ground-based observations will provide valuable new information, but laboratory studies (both spectroscopy and chemical kinetics) are needed to resolve questions that have been raised by existing observations and models. Areas in which laboratory work are needed include
- Identifying the mechanism(s) and quantifying the rate of oxidation of CO on/in sulfuric acid aerosols - Reducing the existing 1.5 kcal/mol uncertainty in the heat of formation for ClCO and the 5 cal/mol/K uncertainty in the reaction entropy for formation of ClCO - Determining the rate for CO + O2(c) -> CO2 + O(1D,1S) and competing reactions destroying/quenching O2(c) - Reducing existing uncertainties in the CO2 dissociation and absorption cross sections at 195 - 204 nm - Determining the rate for ClSO2 + O2 + M -> ClSO4 + M - Measuring the rate(s) of reactions that oxidize S2Cl and SCl2- Publication:
-
AAS/Division for Planetary Sciences Meeting Abstracts #39
- Pub Date:
- October 2007
- Bibcode:
- 2007DPS....39.5806M