Electrification of agitated dust can cause visible breakdown in a carbon dioxide atmosphere at low pressure in a laboratory experiment. Dust storms on earth become electrified, with accompanying breakdown phenomena. Martian dust storms may reduce the atmospheric conductivity by capturing fast ions on particles, and, by electrifying, may cause discharges in the relatively low pressure atmosphere.

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The effect on the flow caused by a thin rigid radial wall that acts as a total barrier to continuous zonal motion in a heated rotating annulus has been examined. The gross effects of increases in rotation on the flow in the absence of such a barrier are greatly diminished. Measurements of total heat transfer and temperature field are compared for the two cases.

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