A dropsonde is an expendable weather reconnaissance device created by the National Center for Atmospheric Research (NCAR), designed to be dropped from an aircraft at altitude to more accurately measure (and therefore track) tropical storm conditions as the device falls to the surface. The sonde contains a GPS receiver, along with pressure, tempera...
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http://en.wikipedia.org/wiki/Dropsonde
An instrument, usually dropped from an aircraft, which measures weather elements 9 such as temperature, wind, humidity and pressure) as it descends
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http://www.metcheck.com/OTHER/glossary.asp
an instrument similar to a radiosonde that is attached to a parachute and released from an aircraft.
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https://www.infoplease.com/dictionary/dropsonde
No exact match found.
