Author(s): So Kazama; Hajime Yanagisawa
Linked Author(s): So Kazama
Keywords: No Keywords
Abstract: Spatial return period of extreme precipitation events is analyzed. Spatial return period is the recurrent period during which extreme precipitation occurs even once within a certain spatial area. For the precipitation data, we used d4PDF's large-scale ensemble data and divided Japan into five regions based on climate classification to consider the differences in spatial return periods in each region. The spatial return period with 100-year extreme precipitation is 3.82 years in Hokkaido and 2.34 years in the Pacific side of western Japan, showing regional differences. Additionally, as a result of comparing the spatial return periods of past experiments, 2℃ increase experiments, and 4℃ increase experiments, the rate of increase in the frequency of extreme precipitation is higher in northern Japan, and the frequency may especially increase approximately three times in the Hokkaido region.
Year: 2024