【摘要】 根据北京地区20个国家气象站1961～2021年6～9月的逐分钟降水观测资料，探讨了不同连续时间下分钟强降水事件的空间分布和日内变化特征。结果表明：北京地区分钟强降水事件的发生频次和强降水量都在平原地区和东北山前地带存在高值，降水历时越长，平原上分钟强降水量高值的分布范围越大；与西部和北部山区的乡村站相比，平原地区的城市站和郊区站具有更高的分钟强降水强度，年际变异性也相对更大；分钟强降水事件在城市站多发生于每日21:00（北京时间，下同）至次日09:00，强降水量在18:00和21:00前后出现峰值，而在山区乡村站主要发生在03:00至06:00，分钟强降水量在12:00前后更大。更多还原

【Abstract】 Minute-by-minute precipitation data from 20 national meteorological stations in Beijing collected from June to September during 1961-2021 were analyzed to explore the spatial distribution and diurnal variation in minute intense precipitation events at different durations. The results show that the frequency and intensity of minute intense precipitation events are higher in the plain and northeast piedmont areas of Beijing. As the duration of precipitation increases, the distribution range of high-intensity precipitation in the plains expands. Urban and suburban stations in the plains experience higher intensity and greater interannual variability in minute intense precipitation compared to rural stations in the western and northern mountains. Most minute intense precipitation events occur at urban stations between 2100 LST and 0900 LST, and the following day with peaks around 1800 LST and 2100 LST. In contrast, these events mainly occur between 0300 LST and 0600 LST in mountainous rural areas, with the greatest intensity around midday.更多还原