Characteristics of wind speed during rainfall event in the tropical urban city

Husna Aini Swarno, Sheikh Ahmad Zaki, Aya Hagishima, Yusri Yusup

研究成果: ジャーナルへの寄稿学術誌査読

13 被引用数 (Scopus)

抄録

An increasingly recurring recent phenomenon in tropical urban areas is the occurrence of strong winds associated with rainfall. This study investigated the characteristics of strong winds during similar rainfall events. Wind speeds and directions were measured at a sampling frequency of 10 Hz with a high-frequency three-dimensional sonic anemometer from September 2015 until January 2016 during the northeast monsoon season in Kuala Lumpur, Malaysia. Rainfall events were categorised as non-rainfall, during rainfall, before rainfall, and after rainfall. Rainfall amounts were classified as non-rainfall, heavy rainfall, and heavy shower. The results indicated that strong winds (>6.0 m s−1) with slight turbulence (0.3 turbulence intensity) typically occurred 10 min before rainfall during the day from 15:00 to 17:00 LT. Wind speeds began to decline within the first 5 min of rainfall until after the rain had stopped with a range of 2.0–5.0 m s−1. Significantly, heavy rainfall occurred with wind speeds of 8.0–9.5 m s−1 at almost double the likelihood compared to non-rainfall conditions. These findings provide useful information for the design and construction of buildings with good airflow and strong structures in urban areas.

本文言語英語
論文番号100620
ジャーナルUrban Climate
32
DOI
出版ステータス出版済み - 6月 2020

!!!All Science Journal Classification (ASJC) codes

  • 地理、計画および開発
  • 環境科学(その他)
  • 都市研究
  • 大気科学

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