Recent climate change has led to an increase in the frequency and intensity of extreme precipitation events, increasing concerns about the safety of large hydraulic structures such as dams. Probable Maximum Precipitations (PMPs) in Korea have not been...
Recent climate change has led to an increase in the frequency and intensity of extreme precipitation events, increasing concerns about the safety of large hydraulic structures such as dams. Probable Maximum Precipitations (PMPs) in Korea have not been updated for approximately 20 years since their calculation by the Ministry of Construction and Transportation in 2004, presenting limitations due to outdated observational data and calculation procedures. This study proposes a procedure for calculating PMPs that considers climate change, based on the hydrometeorological approach presented by the World Meteorological Organization (WMO, 2009). The PMP calculation procedure was established using dew point as the primary variable reflecting future temperature changes. This procedure was applied to the SSP5-8.5 scenario from HadGEM3-RA, provided by the Korea Meteorological Administration, to project future PMPs. Analysis results indicate that future PMPs are projected to increase by approximately 11% compared to present PMPs, with regional disparities tending to widen as the future period progresses. However, the results of this study are based on a single method and a single model, and there are limitations and risks to using them alone for future PMP projections. Therefore, it is necessary to perform a more reliable future PMPs projection by ensemble forecasting results utilizing various techniques and models.