Cloudy with a chance of Martian ice and dust This supercomputer simulation shows the climate on Mars over the course of one year, spanning from spring through winter in the northern hemisphere. In the visualization, water-ice clouds are gray, while dust is yellow and frozen carbon dioxide is white. As the ice caps in the north shrink, they grow in the south. As fall arrives, a dust storm encircles the entire planet. | NASA Ames Research Center