Climatological Characteristics of Summer Minute-Scale Intense Precipitation in Beijing Area

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.