A model of the atmospheric metal deposition by cosmic dust particles

Statistics – Computation

Scientific paper

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Atmospheric Chemistry, Atmospheric Composition, Atmospherics, Cosmic Dust, Deposition, Earth Atmosphere, Metals, Nightglow, Annual Variations, Kinetics, Sodium, Steady State, Temperate Regions, Thermosphere

Scientific paper

We have developed a model of the deposition of meteoric metals in Earth's atmosphere. The model takes as input the total mass influx of material to the Earth and calculates the deposition rate at all altitudes through solution of the drag and subliminal equations in a Monte Carlo-type computation. The diffusion equation is then solved to give steady state concentration of complexes of specific metal species and kinetics are added to calculate the concentration of individual complexes. Concentrating on sodium, we calculate the Na(D) nightglow predicted by the model, and by introduction of seasonal variations in lower tropospheric ozone based on experimental results, we are able to duplicate the seasonal variation of mid-latitude nightglow data.

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