Scientists are eager to use CALIPSO data to study the nature of the atmosphere. Using lidar and a pair of infrared and visible imaging systems, CALIPSO promises to deliver new insights into how clouds and aerosols work to affect the atmosphere. Note: This animation illustrates how CALIPSO captures data to study the nature of the atmosphere. Animator: Susan Twardy (HTSI), Chris Meaney (HTSI). Writer: Sarah DeWitt (NASA/GSFC).