Accession Number : ADA293528

Title :   Aerosol Optical Properties of the Free Troposphere: Tropospheric Backscatter Climatology.

Descriptive Note : Final rept. 28 Nov 89-28 Nov 94,

Corporate Author : WYOMING UNIV LARAMIE DEPT OF PHYSICS AND ASTRONOMY

Personal Author(s) : Rosen, James M.

PDF Url : ADA293528

Report Date : 15 DEC 1994

Pagination or Media Count : 23

Abstract : A unique ensemble of aerosol sensors (backscattersondes, nephelometers and particle counters) has been assembled during the course of this research to obtain new measurements relating to the optical properties of aerosols in the atmosphere, especially in the free troposphere. A knowledge of the aerosol extinction-to- backscatter ratio has been greatly enhanced as a result of this project and the inference of representative values along with the range of variation is now possible. Agreement between the optical model results and actual measurements appears to be quite satisfactory. An initial climatology of aerosol backscatter in the free troposphere has been developed and is in general agreement with results and inferences from global remote sensing instruments. However, the data from remote sensors may indicate a larger influence of volcanic aerosols on the upper troposphere than actually exists. Further work with high resolution soundings is needed to fully resolve this issue. jg

Descriptors :   *OPTICAL PROPERTIES, *AEROSOLS, *BACKSCATTERING, *CLIMATOLOGY, *TROPOSPHERE, MEASUREMENT, OPTICAL EQUIPMENT, RATIOS, GLOBAL, DETECTORS, MODELS, HIGH RESOLUTION, VARIATIONS, REMOTE DETECTORS, ATMOSPHERES, VOLCANOES, SOUNDING, PARTICLE COUNTERS, NEPHELOMETERS.

Subject Categories : Atmospheric Physics
      Physical Chemistry
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE