Atmospheric Water Vapor Absorption Recorded Ten Meters Above the Ground With a Drone Mounted Frequency Domain THz Spectrometer

A Bakman Technologies PB7220-2000-T frequency-domain THz spectrometer is modified to allow it to operate autonomously while attached to a DJI-S1000 consumer drone. The THz spectrum of atmospheric water vapor is recorded during an 8 min flight 10 m above the ground at Paramount Ranch Park, Agoura Hills, CA, USA. The spectrum is then compared to theory and the relative humidity determined.