Calculating the radar signal reflected from cirrus cloud by discrete dipole approximation

Victor A. Shishko; Dmitriy N. Timofeev; Natalia V. Kustova; Alexander V. Konoshonkin; Anatoli G. Borovoi

doi:10.1117/12.2576752

12 November 2020 Calculating the radar signal reflected from cirrus cloud by discrete dipole approximation

Victor A. Shishko, Dmitriy N. Timofeev, Natalia V. Kustova, Alexander V. Konoshonkin, Anatoli G. Borovoi

Proceedings Volume 11560, 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics; 115605G (2020) https://doi.org/10.1117/12.2576752
Event: 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 2020, Moscow, Russian Federation

Abstract

The report presents database of microwave radiation scattering matrices for ice particles of cirrus clouds. The calculations were performed for meteorological radars operating at frequencies of 35 and 94 GHz. The calculation was carried out for randomly oriented ice particles of the following shapes: hexagonal plates and columns, aggregate, bulletrosette, droxtal and irregular shape particle. The particle size ranges from 10 to 10000 microns. It has been found out that the Rayleigh scattering theory for these radar wavelengths is not applicable to the full spectrum of ice crystals observed in the clouds. Specific threshold sizes are determine for each crystal shape. The results can be used to interpret joint radar-lidar measurements.

Citation Download Citation

Victor A. Shishko, Dmitriy N. Timofeev, Natalia V. Kustova, Alexander V. Konoshonkin, and Anatoli G. Borovoi "Calculating the radar signal reflected from cirrus cloud by discrete dipole approximation", Proc. SPIE 11560, 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 115605G (12 November 2020); https://doi.org/10.1117/12.2576752

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