【摘要】 采用2013—2020年潮州市53个自动气象站逐时降水资料，运用统计学及空间插值方法，对潮州市的极端短时强降水时空分布特征及地形作用进行分析。结果表明：潮州市年极端短时强降水频次呈波动下降趋势，主要发生在4—9月，呈双峰型分布，主峰在8月份，次峰在6月份；日变化呈双峰型，下午到傍晚是主要发生时段，其次是上半夜到午夜。空间分布不均，其中潮州市中部到西北部频次较高。极端短时强降水的发生与地形关系密切，多出现在迎风坡、河谷和沿海等地区。更多还原

【Abstract】 Using the day-to-day rain data from 53 automatic weather stations in Chaozhou from 2013 to 2020 and with the methods of statistics and spatial interpolation, this work analyzes the characteristics of spatiotemporal distribution of extreme short-range intense rain in the city and associated terrain effect. The results are shown as follows. For Chaozhou, the annual frequency of extreme short-range intense rain tends to decrease in fluctuation, mainly occurring from April to September with a bimodal distribution with the primary peak in August and the secondary peak in June. The diurnal variation is also bimodal with the time from the afternoon to the evening being the main period of occurrence, followed by the time from the hours before midnight to midnight. Spatially speaking, the extreme short-range intense rain is uneven with relatively high frequency happening in the central and northwestern parts of the city. This type of rain is closely related with the terrain, mostly occurring in windward slopes, river valleys and coastal areas.更多还原