Title:		Turbulent kinetic energy (TKE) profiles from Doppler lidar
Location:	Belle Mina Site for Vortex-SE-2016      
Lat/Lon:	34.690 degN, -86.885 degE
Date updated: 	4 October 2017
Contact: 	Tim Bonin and Dave Turner, NOAA (timothy.bonin@noaa.gov, dave.turner@noaa.gov)
System:  	Leosphere 100-S lidar, which was deployed by NOAA Air Resources Lab beside the CLAMPS-1 facility

--- Background

Doppler lidars transmit pulses of 1.5 um wavelength laser energy into the atmosphere, which scatters off aerosol particles and hydrometeors.  The lidar measures the intensity of this return, as well as its radial velocity.  The lidar has a scanner which allows the system to scan anywhere in the hemisphere, and typically a fixed scan strategy is used.

This lidar was operated in the so-called "6-beam" mode (Sathe et al. 2015), wherein radial velocity data were collected at 5 different azimuths each at 45 degrees elevation.  These data were processed using the 6-beam technique to derive variance in u, v, and w as well at TKE as a function of height.  Tim Bonin processed these data using the methods outlined in Bonin et al. (2017).  

This dataset was collected north of Belle Mina, Alabama, during the VORTEX-SE-2016 field campaign.  This lidar is the Leosphere 100-S system. This lidar was deployed directly beside the Collaborative Lower Atmospheric Mobile Profiling System (CLAMPS-1).  It started operations on 11 March and continued until May 2.  

References:

Bonin and coauthors, 2017: Evaluation of turbulence measurement techniques from a single Doppler lidar. Atmos. Meas. Tech., 10, 3021-3039, doi:10.5194/amt-10-3021-2017

Sathe, Mann, Vasiljevic, and Lea, 2015: A six-beam method to measure turbulence statistics using ground-based wind lidars. Atmos. Meas. Tech., 8, 729-740, doi:10.5194/amt-8-729-2015

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