Author(s): Seo-Yeon Park; Sang-Hyeok Park; Se-Bin Park; Joo-Heon Lee
Linked Author(s):
Keywords: Minute-scale rainfall; Extreme rainfall; Urbanization effects; Climate change impacts
Abstract: Although climate change is intensifying short-duration extreme rainfall, quantitative understanding of sub-hourly rainfall characteristics remains limited. This study analyses extreme rainfall behaviour across urban, urban–rural, and rural regions using 1-minute rainfall data from Automatic Weather System (AWS) stations in Korea for the period 2000 to 2024. Independent rainfall events were identified using the SSM method with a 15-minute minimum inter-event time (MIT), and extreme rainfall was extracted based on the 95th percentile for each duration. Results show that urban areas experienced pronounced intensification of short-duration extremes, reflecting combined effects of climate change and urbanization. Urban–rural areas exhibited increasing trends in medium- and long-duration extremes, whereas rural regions showed decreasing trends in maximum intensity of extreme events for specific durations. These findings suggest that climate change and land-use alterations driven by human activities are jointly reshaping high-intensity rainfall patterns.
Year: 2026