Accession Number : AD0889028

Title :   LIDAR-Tracer Atmospheric Diffusion Measurement System.

Descriptive Note : Technical note,

Corporate Author : DESERET TEST CENTER FORT DOUGLAS UT

Personal Author(s) : Ross, Richard A.

Report Date : AUG 1971

Pagination or Media Count : 22

Abstract : Development of the Raman LIDAR (Laser Radar) system has realized marked progress in recent months. It will provide a unique method for determining the composition and concentration of atmospheric constituents as small as gas molecules. Thus, this system will not only provide a method for monitoring the status of the atmosphere but also provide instantaneous pprtrayals of changes of the density of a portion of a tracer cloud, as well as identify the content of the cloud. This is most easily accomplished by utilizing the phenomenon of Raman scattering in conjunction with an appropriate tracer cloud. A Raman LIDAR system would allow an indifect measurement of turbulent diffusion processes, concentration profiles, and composition identification that would be orders of magnitude better than the existing standard field sampler techniques. Employing information from such a system would allow the computation of such things as downwind hazard prediction with marked improvement in the precision because of the higher grade data which would incorporate continuous real time sampling from a sensor located at a site remote from the tracer cloud. (Author)

Descriptors :   (*OPTICAL RADAR, LASERS), (*LIGHT TRANSMISSION, ATMOSPHERES), (*AIR POLLUTION, MEASUREMENT), COHERENT RADIATION, SCATTERING, RAMAN SPECTROSCOPY, TRACER STUDIES.

Subject Categories : Atmospheric Physics
      Optical Detection and Detectors
      Air Pollution and Control

Distribution Statement : APPROVED FOR PUBLIC RELEASE