Lidar Technique for Adjusting Aerosol Model Number Densities to Existing Conditions

Abstract

A technique is introduced by which the total number density of the LOWTRAN 7 Navy Maritime Aerosol Model is adjusted to represent existing atmospheric conditions. Measurements of the vertical profile of relative humidity and surface wind speeds are used with the model to determine the aerosol extinction and backscatter coefficients variations with altitude. Using the single-scatter lidar (light detection and ranging) equation, these parameters are then used to calculate a range compensated power, S(h), from an airborne system. An iterative method is used by which the calculated S(h) values are adjusted to agree with corresponding measured values. Examples are presented of extinction and backscatter coefficients variations with range from the lidar calculated using adjusted size distribution. Also presented are the computer program and operating instructions for adjusting the size distributions at each altitude. Keywords: Aerosol extinction; Backscatter coefficients variations; Extinction coefficients variations; Single scatter lidar equation; Backscattered power.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1989
Accession Number
ADA213846

Entities

People

  • H. G. Hughes
  • M. R. Paulson

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Air Masses
  • Aircrafts
  • Altitude
  • Atmospheric Sciences
  • Backscattering
  • Classification
  • Coefficients
  • Computer Programs
  • Computers
  • Detection
  • Detectors
  • Equations
  • Extinction
  • Humidity
  • Lidar
  • Measurement
  • Security

Fields of Study

  • Environmental science

Readers

  • Atmospheric Remote Sensing.
  • Computational Modeling and Simulation