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The impact of turbulent vertical mixing in the Venus clouds on chemical tracers

Marcq, Emmanuel; Lefèvre, Franck; Lefèvre, Maxence

Venus' clouds host a convective layer between roughly 50 and 60 km that mixes heat, momentum, and chemical species. Observations and numerical modelling have helped to understand the complexity of this region. However, the impact on chemistry is still not known. Here, we use for the first time a three-dimensional convection-resolving model with pa…

Statistical study of lightning-generated whistler-mode waves observed by Venus Express

Zhang, Tielong; Russell, Christopher T.; Hart, Richard A.

From 2006 through 2014, Venus Express regularly observed lightning-generated whistler-mode waves in the ionosphere of Venus. Since the ionopause of Venus is relatively low on the dayside, we restrict our statistical results to below 400 km altitude. Although the detections were of comparable rates for solar minimum and solar maximum (5.4% and 5.0%…

Venus mountain waves in the upper atmosphere simulated by a time-invariant linear full-wave spectral model

Schubert, Gerald; Navarro, Thomas; Walterscheid, Richard L. +1 more

A 2-D spectral full-wave model is described that simulates the generation and propagation of mountain waves over idealized topography in Venus' atmosphere. Modeled temperature perturbations are compared with the Akatsuki observations. Lower atmosphere eddy diffusivity and stability play a major role in the upward propagation of gravity waves from …