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| image title | Radiosonde 3 |
| image |  |
| caption | Radiosondes are carried on balloons. This image shows the payload, which uses GPS to record its position, and also measures air temperature, humidity and pressure by means of electronic sensors. The instrument readings are then transmitted by radio to a receiver on the ground. (The process of transmitting data to a remote location in this way is called telemetry.) |
| code | MI036 |
| Section | Meteorological instruments |
| Subsection | Balloons, aircraft and radar |
| image credit | © Vaisala |
| thumbnail |  |
| File | |