CloudSat image of a horizontal cross-section of a polar night storm near Antarctica. Top image shows the area covered. Bottom image is a horizontal cross-section of clouds, warm air seen rising over colder air. Red = rain or ice crystals; blue = thinner clouds (such as cirrus); green = horizon. Shows the atmosphere to 19 altitude. Image credit: NASA/JPL/The Cooperative Institute for Research in the Atmosphere (CIRA), Colorado State University