Radiosonde
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A radiosonde (Sonde is French and German for probe) is a unit for use in things such asweather balloons that measures various atmospheric parametersand transmits them to a fixed receiver. Radiosondes may operate at a radio frequency of 403 MHz or 1680 MHz and both types may be adjusted slightly higher or lower as required. A rawinsonde is a radiosonde that is designed to only measure wind speed and direction. Colloquially, rawinsondes are usually referred to as radiosondes.
Modern radiosondes measure or calculate the following variables:
- Pressure
- Altitude
- Geographical position (Latitude/Longitude)
- Temperature
- Relative humidity
- Wind (both wind speed and wind direction)
- Cosmic ray readings at high altitude
Radiosondes measuring ozone concentration are known as ozonesondes.
Some photo taken during the search of a radiosonde.
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