High Speed Method of Detection of Vortex without Empirical Conditions—Application to Risk-Assessment of Tropical Cyclone—

Norihiko Sugimoto, Minh Tuan Pham, Kanta Tachibana, Tomohiro Yoshikawa, Takeshi Furuhashi

研究成果: Article査読

抄録

We propose a method to evaluate intensities and influential ranges of detected vortex as an extension of high speed method to detect vortex using a streamline with enhanced curvature, which is useful to identify tropical cyclones in huge climatology data. In the proposed method, center of vortex is detected by iteration of streamline from some initial points automatically. This method has high accuracy and low computational cost, because it does not need to check empirical conditions at all grid points, as in the case of conventional method. This paper exemplifies the accuracy of the vortex risk-assessing method using observational climatology data. Results suggest that this method is available for risk-assessment of tropical cyclones under global warming predicted by high resolution models.

本文言語English
ページ(範囲)297-307
ページ数11
ジャーナルTheoretical and Applied Mechanics Japan
57
DOI
出版ステータスPublished - 2009 1 1

ASJC Scopus subject areas

  • 数学 (全般)
  • 凝縮系物理学
  • 材料力学

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