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1. It can be used to work out wind speed and direction at a range of heights.

(This can be done by tracking the balloon by radar or by assuming a rate of ascent and using triangulation).

By using in-built sensors...

2. It measures air temperature at a range of heights.

3. It measures humidity at a range of heights.

(This becomes less accurate with height, because it starts off measuring humidity with respect to water, but at height the water is all frozen, so the humidity is with respect to ice)

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14y ago

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