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Polarization lidar returns from aerosols and thin clouds: a framework for the analysis.
Applied Optics
|February 21, 2008
Summary
This study introduces new methods for interpreting polarization lidar data to distinguish between solid and liquid aerosol phases. These techniques improve the analysis of polar stratospheric aerosols and thin clouds.
Area of Science:
- Atmospheric Science
- Remote Sensing
- Aerosol Physics
Background:
- Polarization lidar is crucial for characterizing atmospheric particles.
- Distinguishing between solid and liquid aerosol phases is challenging.
- Polar stratospheric aerosols have complex composition and phase properties.
Purpose of the Study:
- To present new relationships for interpreting polarization lidar observations.
- To enable the separation of backscatter contributions from solid and liquid aerosol phases.
- To enhance the study of polar stratospheric aerosol composition and phase.
Main Methods:
- Utilizing classical backscatter and depolarization ratio parameters.
- Employing particulate cross-polarized backscatter cross sections.
- Comparing the effectiveness of different parameter sets for phase separation.
Main Results:
- Developed relationships for polarization lidar data interpretation.
- Demonstrated the separation of solid and liquid phase contributions.
- Showed that particulate cross-polarized backscatter cross sections offer better aerosol phase separation.
- Applied methods to analyze polar stratospheric aerosols.
Conclusions:
- The presented relationships effectively differentiate aerosol phases.
- Particulate cross-polarized backscatter cross sections are superior for aerosol phase discrimination.
- Enhanced understanding of polar stratospheric aerosol properties is achieved.
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