| 2021年6月25—26日南充市暴雨过程成因分析 |
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| 引用本文： | 钟启琴,张力,崔宗鸿.2021年6月25—26日南充市暴雨过程成因分析[J].现代农业科技,2023(1):145-150. |
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| 作者姓名： | 钟启琴 张力 崔宗鸿 |
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| 作者单位： | 川东北强天气研究南充市重点实验室;四川省南充市高坪区气象局,川东北强天气研究南充市重点实验室;四川省南充市高坪区气象局,川东北强天气研究南充市重点实验室 |
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| 摘 要： | 针对南充市2021年6月25—26日区域性暴雨天气过程，利用地面自动站、高空实况以及模式格点等资料进行暴雨成因分析，并对数值预报产品进行预报检验。结果表明：此次暴雨过程是因副热带高压缓慢西进、500 hPa低值系统维持在盆地、低层有辐合系统配合而产生的以稳定性降水为主的降水过程。850 hPa盆地中部到东北部西南低涡、700 hPa低空急流、切变线的维持为此次暴雨天气提供了较好的动力和水汽条件。在本次区域暴雨形成中热力作用不明显，但是由于具备其他条件，仍要考虑本地暴雨的预报。欧洲中心细网格风场预报对此次南充市东部的暴雨预报具有指示意义，西南区域模式也具有一定的参考性。
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| 关 键 词： | 暴雨 成因分析 数值预报检验 四川南充 2021年6月25—26日 |
| 收稿时间： | 2022/3/21 0:00:00 |
| 修稿时间： | 2022/3/21 0:00:00 |
The Analysis of the Cause of Rainstorm Process in Nanchongfrom June 25 to 26, 2021 |
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| Abstract: | To analyze the causes of rainstorm ,we used the data of ground automatic station, high-altitude reality and model grid points, and tested the numerical prediction products, according to the regional rainstorm weather process in Nanchong from June 25 to 26, 2021.The results show that (1) the rainstorm process was produced under the condition that the subtropical high moved westward slowly, the 500hPa low pressure system is maintained in the basin, and there was a convergence system in the lower layer. This is a precipitation process dominated by stable precipitation. (2) The maintenance of 850hPa southwest vortex and 700hPa low-level jet and shear line provided good power and water vapor conditions for the rainstorm, and the thermal effect was not very obvious in the formation of Rainstorm in this region. The wind field of the ECMWF numerical model had indicative significance to the rainstorm forecast in the eastern part of Nanchong, and the SWC-WARMS model also had certain forecasting ability for rainstorm. |
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| Keywords: | Rainstorm Cause analysis Numerical model test |
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