What question did this study set out to answer?

To investigate the relationship between lidar particle depolarization ratio (PDR), particle size, and complex refractive index in different aerosol types.

April 16, 2026

Laboratory experiment at 180.0° backscattering angle: Lidar PDR dependency on refractive index and size across several aerosol types: Mineral dust, pollen, soot

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Authors

AMAlain MiffreUniversité Claude Bernard Lyon 1 PRPatrick Rairoux

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Implication

Laboratory experiment reveals how lidar PDR depends on particle size and refractive index in various aerosols, suggesting important implications for lidar interpretation.

Key Points

To investigate the relationship between lidar particle depolarization ratio (PDR), particle size, and complex refractive index in different aerosol types.
Conducted laboratory experiments at 180.0° backscattering angle for various aerosol types.
Measured lidar PDR at 355 nm and 532 nm wavelengths.
Analyzed four mineral dust samples with different complex refractive indices.
Included investigations on several pollen types and soot aerosols.
Lidar PDR for silica was found to be 33 ± 1%.
Hematite showed a significantly lower PDR of 10 ± 1%.
Arizona dust exhibited higher depolarization than Asian dust due to a higher hematite content.
When hematite is less prevalent, PDR is mainly size-dependent, increasing with larger particle sizes.

Cite This Study

Miffre et al. (2026) studied this question.

synapsesocial.com/papers/69e07d3c2f7e8953b7cbe448 https://doi.org/10.1051/epjconf/202636201003/pdf

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Implication

Laboratory experiment reveals how lidar PDR depends on particle size and refractive index in various aerosols, suggesting important implications for lidar interpretation.

Laboratory experiment at 180.0° backscattering angle: Lidar PDR dependency on refractive index and size across several aerosol types: Mineral dust, pollen, soot

Discussion

Member takes

Implication

Key Points

Cite This Study

Laboratory experiment at 180.0° backscattering angle: Lidar PDR dependency on refractive index and size across several aerosol types: Mineral dust, pollen, soot

Discussion

Member takes

Implication

Key Points

Cite This Study

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