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Title: Quantitative Estimation of Strong Winds in an Urban District during Typhoon Jebi (2018) by Merging Mesoscale Meteorological and Large-Eddy Simulations
Authors: Takemi, Tetsuya  kyouindb  KAKEN_id  orcid (unconfirmed)
Yoshida, Toshiya
Yamasaki, Shota
Hase, Kentaro
Author's alias: 竹見, 哲也
吉田, 敏哉
山崎, 聖太
長谷, 健太郎
Issue Date: 2019
Publisher: Meteorological Society of Japan
Journal title: SOLA
Volume: 15
Start page: 22
End page: 27
Abstract: An intense tropical cyclone, Typhoon Jebi (2018), landed the central part of Japan and caused severe damages. Quantitative assessment of strong winds in urban districts under typhoon conditions is important to understand the underlying risks. As a preliminary study, we investigate the influences of densely built urban environments on the occurrence of wind gusts in an urban district of Osaka City during Typhoon Jebi by merging mesoscale meteorological and building-resolving large-eddy simulations (LES). With the successful reproduction of the track and intensity of the typhoon in meteorological simulations, the simulated winds at the boundary-layer top of the LES model are used to quantitatively estimate the wind gusts in the urban district. The maximum wind gust in the analysis area of Osaka was estimated as 60-70 m s-1, which is comparable to the wind speed at the height of about 300 m.
Description: 2018年の台風21号による大阪市街地での暴風シミュレーションに成功 --市街地内では瞬間的には毎秒60から70メートルにも迫る暴風が吹いた可能性--. 京都大学プレスリリース. 2019-02-06.
Rights: © The Author(s) 2019. This is an open access article published by the Meteorological Society of Japan under a Creative Commons Attribution 4.0 International (CC BY 4.0) license.
DOI(Published Version): 10.2151/sola.2019-005
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