Skip to main content Accessibility help

We use cookies to distinguish you from other users and to provide you with a better experience on our websites. Close this message to accept cookies or find out how to manage your cookie settings.

Close cookie message
×
  1. Home
  2. Search

Refine search

Refine search

Access:
Content type:
Publication date:
Apply   From and To filters
Subject: Show more
Journals Show more
Publishers: Show more
Societies Show more
Series: Show more
Collections: Show more

Actions for selected content:

Select all | Deselect all
  • View selected items
  • Export citations
  • Download PDF (zip)
  • Save to Kindle
  • Save to Dropbox
  • Save to Google Drive

Save Search

You can save your searches here and later view and run them again in "My saved searches".

Please provide a title, maximum of 40 characters.
Cancel
×

1 results

  • 4 - Particles in the Atmosphere

  • Gary G. Gimmestad, Georgia Institute of Technology, David W. Roberts, MicroDynamics LLC
  • Book:
    Lidar Engineering
    Published online:
    16 February 2023
    Print publication:
    23 February 2023, pp 65-112

  • Summary

    The range of atmospheric scattering particle sizes is compared graphically with the range of wavelengths used in lidar to show that common particles are both much smaller and much larger than the wavelengths. Scattering must therefore be considered in all three regimes, so formulations and important results are described for Rayleigh, Mie, and geometric optics scattering. Aerosols in the troposphere and stratosphere are then described, with sources, sinks, and size ranges. The lidar ratio is defined. Other particle types are found in water and ice clouds, polar stratospheric clouds, and noctilucent clouds. Depolarization by nonspherical particles is described with Stokes vectors and Mueller matrices, and algorithms are given for finding the degree of depolarization from lidar measurement data. Particle classifiers are described, with examples, illustrating classification techniques using lidar ratios, depolarization ratios, and color ratios. The theory of sun photometry is then reviewed, and AERONET data products are described, with examples.