Doppler Wind lidar observations during T-REX

Lidar system

Instrument

pulsed, coherent Doppler wind lidar rented from Lockheed Martin Coherent Technologies

Technical data

Slave laser Tm: LuAG (pulsed)
Wavelength: 2.0 µm
Pulse energy: 2 mJ
Pulse frequency: 500 Hz
Pulse length 425 ns FWHM (~120 m)
Repetition rate: 500 Hz
Average Power: 1 W
Master laser Tm: LuAG (CW)
Sampling rate: 100-500 pulses
Hemispherical scanner
Telescope Aperture Diameter: 10 cm
Beam Size out of Telescope: 7.125cm @1/e2, 5.1cm @1/e

Measured parameters

Aerosol backscatter intensity
Radial velocity
Spectral width

Time for scans

vertical slice (RHI) scan: 30 - 90 s
conical (PPI) scan: 60 - 120 s
up to ~3000 scans per day

Lidar position

latitude = 36.7925686
longitude = -118.2091583
height = 1240 m MSL

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