A radiosonde is a small, lightweight instrument used to measure atmospheric conditions in the upper layers of the atmosphere. It is typically attached to a weather balloon and ascends into the sky, collecting data on temperature, humidity, pressure, and wind speed as it rises. This information is crucial for weather forecasting and climate research. As the radiosonde ascends, it transmits the collected data back to ground stations via radio signals. This real-time information helps meteorologists understand weather patterns and make accurate predictions. Radiosondes are launched regularly from various locations around the world, contributing to global weather monitoring efforts.