%0 Journal Article %T 2022年8月7~8日晋城市短时强降水过程分析
Analysis of Short Term Heavy Precipitation Process in Jincheng City on August 7~8, 2022 %A 李若羽 %A 杨帆 %A 畅敏艳 %A 郭史进 %A 牛晨煜 %J Climate Change Research Letters %P 40-48 %@ 2168-5703 %D 2025 %I Hans Publishing %R 10.12677/ccrl.2025.141005 %X 本文对2022年8月7~8日山西省晋城市短时强降水天气过程进行了详细复盘。通过利用常规气象观测资料、探空资料及雷达资料等多种数据源，对降水事件的时空分布特征、天气形势及物理机制进行了深入诊断分析。结果显示，此次强降水过程具有分散性、局地性强、小时雨强大、降水效率高且单点突发性强的特点。降水主要发生在8月7日20时至8日20时，晋城市大部分地区出现小到中雨，局地大到暴雨，最大降雨量达76.6 mm，出现在陵川县沙泊池，最大雨强为60.2 mm/h。天气形势分析表明，高空槽东移与中高层干冷空气入侵为此次降水提供了有利的环流背景。低涡的生成与发展为降水过程输送了丰富的水汽和不稳定能量。低层切变线和地面中尺度辐合线的存在，配合良好的水汽条件，导致了对流云降水发展发生。进一步的中尺度分析显示，500 hPa北支锋区高空槽东移，黄淮地区存在低涡切变，晋城位于各高度层的冷暖气流交汇区，700 hPa为显著湿区，850 hPa和700 hPa均有干舌向晋城倾斜。低涡在河南西部发展，并通过低空急流和超低空急流向山西南部输送西南暖湿气流和水汽。此外，物理量场分析显示，晋城地区CAPE值高、K指数大、整层可降水量丰富，水汽条件较好，有利于对流性降水的产生。此次短时强降水事件是多种天气系统共同作用的结果，其中低层切变线、地面中尺度辐合线、良好的水汽条件及热力差异是主要影响因素。太行山脉及山西南部复杂的地形条件也对降水过程产生了一定影响。本研究结果不仅有助于深入理解该地区短时强降水事件的物理机制，也为提高降水预报准确性和防灾减灾提供了科学依据。
This article provides a detailed review of the short-term heavy rainfall weather process in Jincheng City, Shanxi Province on August 7~8, 2022. By utilizing various data sources such as conventional meteorological observation data, sounding data, and radar data, in-depth diagnostic analysis was conducted on the spatiotemporal distribution characteristics, weather patterns, and physical mechanisms of precipitation events. The results show that this heavy precipitation process has the characteristics of dispersion, strong locality, strong hourly rainfall, high precipitation efficiency, and strong single point suddenness. The precipitation mainly occurs from 20:00 on August 7 to 20:00 on August 8. Most areas of Jincheng City have light to moderate rain, and local areas have heavy to rainstorm, with the maximum rainfall of 76.6 mm. The maximum rainfall occurs in Shabochi, Lingchuan County, with the maximum rainfall intensity of 60.2 mm/h. The analysis of the weather situation shows that the eastward movement of the high-altitude trough and the invasion of dry and cold air in the middle and upper levels provide favorable circulation background for this precipitation. The generation and development of eddies transport abundant water vapor and unstable energy for precipitation processes. The existence of low-level shear lines and mesoscale convergence lines on the ground, combined with favorable water vapor conditions, leads to the development of convective cloud precipitation. Further mesoscale analysis shows that the high-altitude trough in the northern front area of 500 hPa has moved eastward, and there is a low vortex shear in the Huang Huai region. Jincheng is located in the intersection area of cold and warm air flows at various heights, with %K 短时强降水， %K 天气形势， %K 诊断分析
Short Term Heavy Precipitation %K Weather Situation %K Diagnostic Analysis %U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=104871