Wikipedia
TAMDAR
TAMDAR (Tropospheric Airborne Meteorological Data Reporting) is a weather monitoring system that consists of an in-situ atmospheric sensor mounted on commercial aircraft for data gathering. It collects information similar to that collected by radiosondes carried aloft by weather balloons. It was developed by AirDat LLC, which was acquired by Panasonic Avionics Corporation in April 2013 and now operates as Panasonic Weather Solutions based in the United States.