What Can You Learn from a Thermometer on a Rising Balloon?
ES1702  High Altitude Balloons
Since the beginning of the 20th century, Americans have been sending thermometers into the sky on balloons. They do so to learn about the properties and structure of the atmosphere. The most commonly used approach is to attach a small instrument package to the bottom of a rising balloon. The package transmits temperature and altitude data to a ground receiving station.

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Twice each day, weather balloons are launched from almost 100 different locations across North America and the Pacific islands.

Click here... to see a map of the launch sites.

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