When Noah’s Flood ended, the continents having spread from the pre flood supercontinent Pangea separated into the current configuration of the continental crust, the ocean worldwide top to bottom was much warmer, because of the fountains of the deep which had sourced the water for the Flood; now imagine the amount of snowfall from clouds having formed by evaporation off that much warmer ocean, the conditions necessary for the Ice Age, it’s hydrology 101.
