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<p>Ice crystal aggregates in cirrus clouds significantly disrupt precise satellite laser ranging to the GLONASS. This work proposed an efficient mathematical model for light scattering calculations of aggregates. This process is traditionally limited by computational resources of modeling such particles. The proposed model represents the aggregate scattering using the known solutions for individual particles. Computations by this model are much faster than direct numerical methods, while maintaining a&#xa0;maximum error of 20%. This accuracy is acceptable for calibration of satellite lasers. The model is validated against physical optics approximations and is also effective for studying the aggregate impact on the optical properties of cirrus clouds, which is useful for both atmospheric laser sensing and radiative transfer problems.</p>

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Light scattering by ice crystal aggregates in physical optics approximation

  • 期刊论文

  • 发表日期：

    2025年10月1日

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  • I. V. Tkachev,
  • V. A. Shishko,
  • A. V. Konoshonkin,
  • N. V. Kustova,
  • D. N. Timofeev,
  • N. Kan

摘要

Ice crystal aggregates in cirrus clouds significantly disrupt precise satellite laser ranging to the GLONASS. This work proposed an efficient mathematical model for light scattering calculations of aggregates. This process is traditionally limited by computational resources of modeling such particles. The proposed model represents the aggregate scattering using the known solutions for individual particles. Computations by this model are much faster than direct numerical methods, while maintaining a maximum error of 20%. This accuracy is acceptable for calibration of satellite lasers. The model is validated against physical optics approximations and is also effective for studying the aggregate impact on the optical properties of cirrus clouds, which is useful for both atmospheric laser sensing and radiative transfer problems.