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Related Experiment Video

Updated: Jul 7, 2026

Measurement of Aerosols Optical Thickness of the Atmosphere using the GLOBE Handheld Sun Photometer
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Published on: May 29, 2019

Multiple-scattering effect on ozone retrieval from space-based differential absorption lidar measurements.

S R Pal, L R Bissonnette

    Applied Optics
    |February 21, 2008
    PubMed
    Summary

    Multiple scattering effects are negligible for stratospheric ozone retrieval but impact tropospheric measurements, especially in clouds and aerosols. Accurate ozone monitoring requires accounting for these complex scattering phenomena.

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    Area of Science:

    • Atmospheric Science
    • Remote Sensing
    • Spectroscopy

    Background:

    • Accurate global ozone measurements are crucial for understanding atmospheric chemistry and climate.
    • Spaceborne differential absorption lidar (DIAL) systems offer a promising approach for global ozone monitoring.
    • The influence of multiple scattering on lidar signals, particularly for ozone retrieval, requires detailed investigation.

    Purpose of the Study:

    • To calculate single-scattering and multiple-scattering lidar signals for a spaceborne DIAL system.
    • To assess the impact of multiple scattering on ozone retrieval at 305/315 nm wavelengths.
    • To evaluate the influence of aerosols and Rayleigh extinction on ozone retrieval accuracy.

    Main Methods:

    • Simulated lidar signals using single-scattering and multiple-scattering approximations.
    • Calculations performed for a spaceborne DIAL system operating at 305 nm (on-wavelength) and 315 nm (off-wavelength).
    • Analysis conducted under various atmospheric conditions, including background stratospheric aerosol, planetary boundary layer aerosols, and cirrus cloud models.

    Main Results:

    • Multiple scattering effects were found to be negligible for stratospheric ozone retrieval with background stratospheric aerosol.
    • In the planetary boundary layer under low-visibility conditions, multiple scattering led to overestimation in maritime aerosols and underestimation in urban/rural aerosols.
    • Multiple scattering significantly hindered accurate ozone retrieval within cirrus clouds, with partial recovery and underestimation below them.

    Conclusions:

    • Multiple scattering significantly impacts ozone retrieval accuracy in the troposphere, particularly in aerosol-laden and cloudy conditions.
    • The presence of aerosols and Rayleigh extinction also influences ozone retrieval, necessitating careful consideration in data analysis.
    • Accurate global ozone monitoring using spaceborne DIAL requires sophisticated models that account for multiple scattering effects, especially in the lower atmosphere and under cloudy conditions.