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HARLIE
Holographic Airborne Rotating Lidar Instrument Experiment |
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General Description
The HARLIE instrument team participated in a 3-week (5-25 April 2002) measurement campaign at Fort Bliss in El Paso Texas, funded by the DoD Strategic Environmental Research Development Program. Investigators from Desert Research Institute (DRI), Utah State University, and University of Arizona (UofA) also participated in the campaign that is part of an effort to quantify the amount of particulate air pollution created by the training activities of U.S. ground-based forces and how it compares with background levels of particulates in desert environments. The army used several types of vehicles to create dust plumes in controlled experiments, driving them over one of the dirt roads that criss-cross the site. HARLIE was used to generate time series of tomographic slices of aerosol scattering through the plumes. HARLIE was set up on a bluff overlooking the test site, about 2 km west of particle sampling and other instruments operated by the DRI and UofA investigators. HARLIE data will be absolutely calibrated for particle scattering and attenuation using in-situ data taken simultaneously at several locations on three towers down-wind of the test vehicles.  A
photograph of HARLIE as deployed in the Fort Bliss Air Quality campaign is in
the upper right of the attached figure. Its holographic scanning telescope is
the green disk surrounded by a tarp to keep blowing dust out of the trailer. In
this configuration, HARLIE's conical scan is oriented as shown in the upper
left. One side of the scan makes a vertical east-west slice across the test road
located 2 km to the East of HARLIE. The instrumented towers are in-line with
this slice, located a few tens of meters on the East side of the road. The
bottom image is from a single scan through a vehicle dust plume (shown with East
to the right). The horizontal scale extends over 5 km and the vertical scale
goes up to 1500 meters above the ground. HARLIE data is being used to help
quantify the mass loading, extent, propagation, and optical properties of the
dust plumes from the army
Location Fort Bliss, El Paso, Texas Period April 5-25, 2002 Objectives DATA For information on the DATA acquired from this mission please contact the investigators. Mr. Geary Schwemmer (Geary.K.Schwemmer@nasa.gov) or Mr. David O. Miller (dom@virl.gsfc.nasa.gov). Sponsors U.S. Army, Strategic Environment R & D Program In collaboration with John Gillies Hampden Kuhns and Hans Moosmuller of the Desert Research Institute and Tom Wilkerson of USU/SDL. HARLIE Instrument Team Geary Schwemmer, David Miller, Sangwoo Lee, Gerry McIntire, Tom Wilkerson, Sonia Garcia Responsible NASA Official: Belay Demoz
Webmaster: Gerry McIntire
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