A simple gradient wind field model for translating tropical cyclones

Cao Wang, Hao Zhang, Kairui Feng, Quanwang Li

Research output: Contribution to journalArticleResearchpeer-review

3 Citations (Scopus)

Abstract

Understanding the spatial structure of wind speed profile of a tropical cyclone (TC) is of critical importance to assess the TC-related damage and map the risk for afflicted areas. The wind field structure of a TC can be regarded as a horizontal primary circulation superimposed by a vertical–radial secondary convection driven by thermal balance. The gradient wind field model has been widely utilized in literature to describe the radial distribution of wind speed with respect to the TC center. In this paper, a new gradient wind field model is developed for translating TCs, based on the vector summation of the rotational wind speed and the translation speed. The accuracy and efficiency of the proposed model are demonstrated through comparing the wind fields generated from model solution and those recorded historically. The proposed model only involves simple algebra, which is beneficial for practical applications, especially in simulation-based studies of TC wind field modeling.

Original languageEnglish
Pages (from-to)651-658
Number of pages8
JournalNatural Hazards
Volume88
Issue number1
DOIs
Publication statusPublished - 1 Aug 2017
Externally publishedYes

Keywords

  • Gradient wind
  • Translation speed
  • Tropical cyclone
  • Wind field model

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