EGU22-10805, updated on 28 Mar 2022
https://doi.org/10.5194/egusphere-egu22-10805
EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

IDF curves in nonstationary regions using regional frequency analysis and RCP scenarios in south korea

Heechul Kim1, Miru Seo2, Taewon Lee3, and Junhaeng Heo4
Heechul Kim et al.
  • 1Yonsei university, Seoul, Korea, Republic of (chul8456@yonsei.ac.kr)
  • 2Yonsei university, Seoul, Korea, Republic of (miru3851@yonsei.ac.kr)
  • 3Yonsei university, Seoul, Korea, Republic of (mohe187@hanmail.net)
  • 4Yonsei university, Seoul, Korea, Republic of (jhjeo@yonsei.ac.kr)

Recently, extreme hydrological phenomena are increasing rapidly due to abnormal climate caused by global warming, and many damages are occurring as the change of precipitation characteristics. The intensity-duration-frequency(IDF) curve is widely applied in practice for designing the hydro-infrastructures. In addition, it is important to predict future changes in rainfall intensity due to climate change.

For this purpose, this study intends to derive the IDF curve, for future periods. In this study, the RCP scenario, a climate change scenario, was used based on historical data (1975-2020) and future rainfall data (2021-2100). Using these data, the stationary and nonstationary regions in the Korean are classified using regional frequency analysis, and the rainfall quantiles for non-stationary regions was calculated using the GEV(1,0,0) model with time varying location parameter. Finally, IDF curves for the historical and future data were derived and analyzed.

 

How to cite: Kim, H., Seo, M., Lee, T., and Heo, J.: IDF curves in nonstationary regions using regional frequency analysis and RCP scenarios in south korea, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-10805, https://doi.org/10.5194/egusphere-egu22-10805, 2022.