Application analysis of Wuchuan radar ROSE 2.0 in a severe hail process in Pengshui

Jianfei Gao; Zhoujian He; Junchuan Dou; Libin Wang

doi:10.1117/12.3010319

15 November 2023 Application analysis of Wuchuan radar ROSE 2.0 in a severe hail process in Pengshui

Jianfei Gao, Zhoujian He, Junchuan Dou, Libin Wang

Proceedings Volume 12815, International Conference on Remote Sensing, Mapping, and Geographic Systems (RSMG 2023); 128152P (2023) https://doi.org/10.1117/12.3010319
Event: International Conference on Remote Sensing, Mapping, and Geographic Systems (RSMG 2023), 2023, Kaifeng, China

Abstract

In this study, we conducted an applied analysis of radar echo characteristics during a severe hailstorm event in Pengshui County, Chongqing, on April 3, 2023, using data from the Wuchuan C-band dual-polarization weather radar ROSE2.0, as well as conventional meteorological observations from ground weather stations and sounding stations. The results indicate that (1) this event occurred under the dominance of low-level warm advection, with strong echo development at the leading edge of the low-level jet. The C-band dual-polarization weather radar effectively detected sidelobe echoes, bounded weak echo regions, and the typical hailstorm structure of supercell storms with widespread echo tilting above the bounded weak echo region. (2) In the mature hailfall phase, the area of the 50dBZ strong echo was greater than or equal to (10×10) km², showing a continuously thickening and deepening strong echo tilting, a strong echo wall behind it, and a well-organized structure within the mid-level cyclone, including a clearly visible bounded weak echo region (BWER) and a large-area of low-level radial wind convergence shear. The characteristic values BASE, TOP and HGT of mesocyclone increased significantly.(3) During the occurrence of hail, the ZDR (differential reflectivity) in the low-value region ranged from -3dB to 0dB. However, within the BWER, ZDR values are greater than 3dB. There was a significant difference in the lower-level CC , ranging from 0.5 to 0.92, which was similar to the indicators in the S-band.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Jianfei Gao, Zhoujian He, Junchuan Dou, and Libin Wang "Application analysis of Wuchuan radar ROSE 2.0 in a severe hail process in Pengshui", Proc. SPIE 12815, International Conference on Remote Sensing, Mapping, and Geographic Systems (RSMG 2023), 128152P (15 November 2023); https://doi.org/10.1117/12.3010319

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KEYWORDS

Radar

Convection

Particles

Chromium

Wind speed

Clouds

Environmental sensing

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