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Related Experiment Videos

Two-wavelength lidar inversion algorithm.

G J Kunz1

  • 1TNO Physics and Electronics Laboratory, PO Box 96864, 2509 JG The Hague, The Netherlands. Kunz@fel.tno.nl

Applied Optics
|February 29, 2008
PubMed
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This study critically examines Potter's lidar method for atmospheric aerosol extinction coefficients. It suggests the method may yield multiple solutions, challenging previous assumptions of a single profile.

Area of Science:

  • Atmospheric optics
  • Remote sensing
  • Lidar technology

Background:

  • Potter's method uses two-wavelength lidar to profile atmospheric aerosol extinction coefficients.
  • Assumptions include constant extinction-to-backscatter ratio and wavelength ratio.
  • Ackermann extended this to include molecular scattering, assuming it's known.

Purpose of the Study:

  • Critically evaluate the fundamental principles of Potter's lidar method.
  • Investigate the uniqueness of the solutions derived from Potter's method.
  • Identify potential limitations and ambiguities in existing lidar profiling techniques.

Main Methods:

  • Analysis of Bernoulli's differential equation solutions used in lidar data processing.
  • Iterative scheme application with an unknown boundary transmission condition.

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  • Critical review of assumptions regarding extinction-to-backscatter ratios and wavelength dependencies.

    • Main Results:

    • The study identifies reasons suggesting Potter's method may not yield a unique solution.
    • The number of possible solutions for atmospheric aerosol profiles is potentially not limited to one.
    • The boundary transmission condition is noted for its relative robustness against noise.

    Conclusions:

    • Potter's method, while foundational, may lead to multiple atmospheric aerosol extinction coefficient profiles.
    • Further investigation is needed to refine lidar data inversion techniques.
    • The assumption of a single solution needs re-evaluation for accurate atmospheric profiling.