Japan Geoscience Union Meeting 2021

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A (Atmospheric and Hydrospheric Sciences ) » A-AS Atmospheric Sciences, Meteorology & Atmospheric Environment

[A-AS02] Extreme Events: Observations and Modeling

Sun. Jun 6, 2021 5:15 PM - 6:30 PM Ch.07

convener:Sridhara Nayak(Disaster Prevention Research Institute, Kyoto University), Tetsuya Takemi(Disaster Prevention Research Institute, Kyoto University), Satoshi Iizuka(National Research Institute for Earth Science and Disaster Resilience)

5:15 PM - 6:30 PM

[AAS02-P01] Analysis of "Typhoon-class Strong Wind" During the Non-typhoon Period for 116 Years (1904-2019) after Weather Observation on the Korean Peninsula : Basic Analysis

*Woo-Sik JUNG1 (1.Department of Atmospheric Environment Information Engineering, INJE University, Republic of Korea.)

Keywords:Non-Typhoon period, Strong wind, 116 years (1904~2019)

Global warming is accelerating due to climate change, and as global warming accelerates, the frequency and intensity of extreme weather on the Korean Peninsula are increasing. Recently, the frequency and intensity of strong winds during the non-typhoon period, not during the typhoon season, under the name of "Typhoon-class Strong Wind,” is increasing, and the damage caused by it is gradually increasing. Several studies have been conducted related to strong winds accompanied by typhoons, but studies related to strong winds during the non-typhoon period are very lacking. Therefore, in this study, we would like to conduct a basic study of strong winds during the period of non-typhoon. To derive basic data, analysis was conducted on all points of the Automatic Synoptic Observation System (ASOS), BOUY, BEACON for a total of 116 years from 1904 to 2019 when meteorological observations began on the Korean Peninsula. In this study, the criteria for strong wind during non-typhoon period was selected and classified as 14 m/s, which is the Korea Meteorological Administration's strong wind warning standard. As a result of the analysis, the rate of strong winds during the non-typhoon is high in coastal and mountainous areas, and the wind speed is also high in coastal and mountainous areas, including Jeju. We analyzed the changes in the rate of strong winds and the speed of strong winds during the non-typhoon period, depending on the El Nino, La Nina, yearly, and monthly. The results of this study are believed to be able to reduce the damage of strong winds during the non-typhoon and use them as basic data for further analysis.

This work was supported by the National Research Foundation of Korea(NRF) grant funded by the Korea government(MSIT) (No. 2020R1F1A1068738)