The Leica ALS50-II LiDAR is a Light Detection and Ranging instrument flown on the NERC-ARF aircraft capable of producing both discrete point clouds and full-waveform returns. With a laser of wavelength 1064 nm pulsed at 4 ns or 9 ns it is suitable for high accuracy topographic applications. The data can be used to create Digital Elevation Models or represent 3D structures such as tree canopies.