The Mobile Operated Doppler Lidar System (MODLS)

The Mobile Operated Doppler Lidar System (MODLS)

LiDAR (Light Detection And Ranging) technology is utilized widely in the meteorological community for research. Lidar works by emitting low-power laser pulses into the amtosphere. The receiver then detects any back-scattered returns from the atmosphere. Unlike ceilometers, Doppler Wind Lidars (DWL) uses the same Doppler frequency shift principle as radars. Light emitted from the lidar is scattered and reflected off of particles in the air back to the receiver. From the received signal, air motion and aerosol characteristics can then be analyzed.

The UAH Doppler Wind Lidar is mounted inside an enclosed trailer that contains a Radiometrics 35-Channel Microwave Profile Radiometer. The trailer system can be deployed in 20-30 minutes. MoDLS is typically operated by 1-3 personnel and often has a weather balloon sounding system accompanied with it.