烟台双偏振雷达在冰雹探测中的初步应用

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Abstract In order to leverage the role of dual polarization radar in localized meteorological monitoring,typical hail weather processes occurring within the detection range of Yantai dual polarization radar from 2020 to 2022 were analyzed,and the basic data product characteristics of dual polarization radar corresponding to hail were statistically analyzed.For hail of different sizes,dual polarization parameter thresholds were statistically analyzed.Analysis shows that the dual polarization parameter differential reflectance factor,correlation coefficient,and differential propagation phase shift rate corresponding to pure hail areas are all extremely small.Most of the differential reflectance factors of small hail or melted hail are greater than 0.9 dB,and the correlation coefficient is generally greater than 0.9.The differential reflectance factor and correlation coefficient of large hail are smaller than those of small hail,and the differential propagation phase shift rate is higher,indicating that the hail area is mixed with raindrops.The null value of the differential propagation phase shift rate affects the threshold statistics.Analyzing the dual polarization parameter differential reflectance factor,correlation coefficient,and differential propagation phase shift rate can verify the hail falling area,making it easier to search for the characteristics of the three body scattering TBSS.

Key words： hail dual-polarization radar differential reflectance factor correlation coefficient TBSS

Received: 27 September 2023

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	Guo Xuexia
	Su Tianji

Cite this article:

Guo Xuexia,Su Tianji. Preliminary application of Yantai dualpolarization radar in hail detection[J]. Meteorological Hydrological and Marine Instrument, 2025, 42(1): 115-118.

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http://www.qxswhy.com/EN/ OR http://www.qxswhy.com/EN/Y2025/V42/I1/115

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