Variation of short-lived species in the upper atmosphere of Venus
Abstract
Most simulations of chemical species in the mesosphere of Venus have used one-dimensional numerical models that represent global-average or diurnal-average conditions. However, we expect significant variations over a diurnal cycle. Here, in order to provide a quantitative assessment on the observed species subject to diurnal variations for an assumed zonal transport rate, we applied a recently developed one-dimensional chemical transport model that simulates the production of the chemical compounds of interest at a diurnal time scale, with prescribed vertical atmospheric transport. Diurnal variations are primarily driven by diurnal solar forcing and transport that includes both eddy mixing and advection. Comparison with observations (e.g., HCl and ClO measured by Sandor and Clancy 2012 and 2018, respectively) provide constraints on chemical processes and dynamics in the upper atmosphere of Venus.
- Publication:
-
AAS/Division for Planetary Sciences Meeting Abstracts #50
- Pub Date:
- October 2018
- Bibcode:
- 2018DPS....5011802L