ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
Archive > Volume 50 Issue 10 > 2024,50(10):1201-1215. DOI:10.7519/j.issn.1000-0526.2024.080101 Prev Next
Evaluation and Analysis of Experimental Testing of Dual-Polarization Weather Radar’s New Volume Coverage Pattern
- Article
- Figures
- Metrics
- Preview PDF
- Reference
- Related
- Cited by
- Materials
Abstract:
In order to address the issue of insufficient vertical sampling below 5° elevation angle and the presence of detection gaps in the volume coverage pattern 21D (VCP21D), four new scanning patterns, namely, VCP12D, VCP212D, VCP215D, and VCP35D, were developed based on WSR-88D. These new scanning patterns were tested using the Yingkou Dual-Polarization Weather Radar, and the results are as follow. The sensitivity and data quality of the four new scanning patterns are comparable to the current VCP21D. The capability to suppress ground clutter is also similar, meeting the operational performance requirements. Therefore, these new scanning patterns can be applied in operational settings. The severe convective detection patterns, VCP12D and VCP212D, provide increased vertical resolution in the lower levels compared to VCP11D. They can obtain more detailed detection data beyond 100 km from the radar. Additionally, their scanning time is reduced from 5 min to 4 min, resulting in improved detection performance for the rapidly developing severe convective storms. The non-severe precipitation mode, VCP215D, has 6 more elevation angles added compared to VCP21D. This allows for more continuous vertical detection products and enables a more complete and detailed representation of echo structure characteristics and storm top heights. The detection time of VCP215D is comparable to that of the VCP21D, demonstrating its superiority. The clear sky pattern, VCP35D, has a slightly smaller data coverage range compared to VCP31D, but it offers higher spatio-temporal resolution and exhibits superior detection capabilities. The new scanning modes have increased the maximum non-blur speed. The high-altitude (above 10°) speeds for VCP12D, VCP212D, and VCP215D have been raised to 33.36 m·s-1, the low-altitude (0.5°-1.3°) speeds for VCP212D and VCP215D have been raised to 28.47 m·s-1, while the entire layer speed for VCP35D has been increased to 26.38 m·s-1.
Keywords:
Project Supported:
Clc Number:
Mobile website
