Pilot balloon observation is a method used to measure various atmospheric variables, such as wind speed and direction, temperature, and humidity. However, alternative words to describe this approach include sounding balloons, weather balloons, and upper-air balloons. These balloons are inflated with gas and released into the atmosphere, rising to significant altitudes to gather valuable data. Other synonyms to describe this technique include radiosonde, stratosphere balloon, aerological instrument, and atmospheric sounding. Pilot balloon observation has been used for decades in meteorological research, monitoring weather conditions, and evaluating the performance of various equipment and instruments used in aviation science.