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The evolution of the contaminant transport in the ascending phase shown from top view. Particles are colored with their local concentration. The multimedia view is 60 times faster than the physical time. The flow is from South (left) to North (right). Multimedia view: https://doi.org/10.1063/5.0098503.2Download video file (9MB, mov) DOI: 10.1063/5.0098503.2