Analysis for Spatiotemporal Characteristics of Downscaled Hourly Precipitation for Climate Scenarios and Hydrological Responses

Abstract:

Abstract

Global Climate Models (GCMs) have been widely used for adapting and mitigating water-related disasters affected by climate change. However, GCM outputs are too coarse to apply at a small basin scale. GCM outputs provide only daily precipitation data that are inadequate to analyze a small or medium basin because only few or several hours are used to determine the peak flows after it rains. Therefore, in the current study, we downscale the outputs to hourly time scale over South Korea for climate change scenarios (RCP 4.5 and RCP 8.5) and illustrate the spatiotemporal distribution of downscaled hourly precipitation. Furthermore, the hydrological application of downscaled scenarios is conducted for its hydrological responses employing a distributed rainfall-runoff model, Vflo.

Acknowledgements

This work was supported by the National Research Foundation of Korea (NRF) grant that was funded by the Korean Government (MEST) (2015R1A1A1A05001007).