| 刊名 | Meteorological and Environmental Research |
| 作者 | Wanshun XUE*, Suonan Meiduo, Langjia Cuomu, Yuxiang ZHANG |
| 作者单位 | Yushu Meteorological Bureau, Yushu 815099, China |
| DOI | 10.19547/j.issn2152-3940.2025.06.002 |
| 年份 | 2025 |
| 刊期 | 6 |
| 页码 | 4~6,14 |
| 关键词 | Short-Term Heavy Precipitation; Dual Polarization Radar; Characteristics |
| 摘要 | Based on the observation data of hourly precipitation and the dual polarization data of the new generation of weather radar in Yushu area from 2022 to 2023, the radar characteristics of 18 short-term heavy precipitation processes were studied through mathematical statistics and comparative analysis of cases. There were four radar detection ranges: within 50 km, within 100 km, within 150 km and beyond 150 km. The evolution laws of echo intensity, echo top height, vertically integrated liquid water (VIL), radial velocity, and dual polarization parameters at different distances were mainly analyzed. The results show that there were significant differences in the radar characteristics of short-term heavy precipitation at different detection distances. Moreover, dense flat large particles, echo parameters with specific thresholds, and appropriate movement speed were important conditions for the occurrence of short-term heavy precipitation. Meanwhile, the radar determination thresholds for short-term heavy precipitation at various detection distances were extracted to provide a scientific basis for the near-term forecast and early warning of short-term heavy precipitation in Yushu area. |
