Friday afternoon’s conversation with Dr. Nadia Drake, the Fall 2016 UW-Madison Science Writer in Residence, began with an experiment in which a chemistry professor placed dry ice into six cylinders filled with colorful liquid. Waiting until the chemical reaction stopped, Drake went to the front and poured huge amounts of dry ice into a basin of hot water. Clouds of white fog came out of the container as condensed water vapor.
Urban heat island effect is a direct result of urbanization, through its conversion of pervious areas, or permeable surfaces that promise the growth of plants, into impervious areas, or hard surfaces like cement sidewalks or parking lots. The UHI effect means that the air in cities is warmer than the air in the countryside.