EGU24-18921, updated on 11 Mar 2024
https://doi.org/10.5194/egusphere-egu24-18921
EGU General Assembly 2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Unveiling the Geodetic Distribution of Temporal Characteristics in Rainstorm Events across Republic of Korea

Hoyoung Cha1, Jongjin Baik2, Hyeon-Joon Kim3, Jinwook Lee4, Jongyun Byun5, and Changhyun Jun6
Hoyoung Cha et al.
  • 1Department of Civil Engineering, Chung-Ang University, Seoul, Republic of Korea (ckghdud2@cau.ac.kr)
  • 2Department of Civil and Environmental Engineering, Chung-Ang University, Seoul, Republic of Korea (jongjin@cau.ac.kr)
  • 3Department of Civil and Environmental Engineering, Chung-Ang University, Seoul, Republic of Korea (hjkim22@cau.ac.kr)
  • 4Department of Civil and Environmental Engineering, University of Hawaii at Manoa, Honolulu, HI, U.S. (jinwookl@hawaii.edu)
  • 5Department of Civil Engineering, Chung-Ang University, Seoul, Republic of Korea (whddbs0932@cau.ac.kr)
  • 6Department of Civil and Environmental Engineering, Chung-Ang University, Seoul, Republic of Korea (cjun@cau.ac.kr)

Abstract

This study analyzed geodetic distribution about temporal characteristics in rainstorm (> 1 hour) observed at approximately 600 rainfall stations across Republic of Korea. Utilizing minute-scale precipitation data observed by rainfall stations from 2000 to 2022, independent rainstorm events separated from rainfall data per unit time (i.e., 10, 20, 30, and 60 minutes) and Inter-Event Time Definition (IETD) (i.e., 2, 3, 4, and 6 hours). The significant variations in rainfall characteristics are defined as the number of independent rainstorm events, rainfall duration (hour), amount (mm), and intensity (mm/hour) for quantifying the temporal characteristics across rainfall stations. We quantified temporal characteristics among rainfall characteristics observed by rainfall stations based on latitude and longitude. The number of independent rainstorm events varies significantly depending on unit time and IETD, and the occurrence of events was frequently observed in areas characterized by island features. The rainfall amount for independent rainstorm events obscured significant characteristics, excluding Halla Mountain on Jeju Island. The geodetic distribution for the duration and intensity per rainstorm event varied depending on the characteristics of the region (i.e., island, mountain, etc.). Based on these results, it was confirmed that certain temporal characteristics vary according to regional features. In future research, we intend to utilize this information to cluster rainfall stations based on temporal characteristics.

Keywords: Independent Rainstorm Events, Temporal Characteristics, Geodetic Distribution, Regional Features, Republic of Korea

Acknowledgment

This research was supported by Korea Environment Industry & Technology Institute (KEITI) funded by Korea Ministry of Environment (RS-2022-KE002032 and 2022003640001) and was also supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. NRF-2022R1A4A3032838 and No. RS-2023-00250239).

How to cite: Cha, H., Baik, J., Kim, H.-J., Lee, J., Byun, J., and Jun, C.: Unveiling the Geodetic Distribution of Temporal Characteristics in Rainstorm Events across Republic of Korea, EGU General Assembly 2024, Vienna, Austria, 14–19 Apr 2024, EGU24-18921, https://doi.org/10.5194/egusphere-egu24-18921, 2024.