This dropsonde shows the latest dropsonde technology created by the Earth Observing Laboratory at the National Center for Atmospheric Research (NCAR). A dropsonde is a weather reconnaissance device dropped from an aircraft or balloon from high altitude to accurately measure profiles of the state of atmosphere. As it descends by parachute, the dropsonde measures wind, atmospheric pressure, temperature, and humidity. These measurements are radioed back to the aircraft or balloon in real time, and are then relayed to the ground. The observations are quickly used in weather forecast models around the world. Dropsonde observations are often collected from regions where scientists would otherwise not have access, and have proven critical in research on atmospheric dynamics, and frequently supply timely information on storms and other weather events that benefit society. GPS dropsondes were invented at NCAR to fill critical observing needs both for the university atmospheric research community and to support federal agencies in their mission to protect life and property from severe weather.