Dynamic modeling for noise mapping in urban areas

Jia Hong Tang, Bo Cheng Lin, Jing Shiang Hwang, Ling Jyh Chen, Bing Sheng Wu, Hong Lian Jian, Yu Ting Lee, Ta Chien Chan*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Environmental noise has been a major environmental nuisance in metropolitan cities. To achieve the goal of sustainable community, noise reduction is an important approach. Without systematic noise mapping, the spatio-temporal distribution of noise variations is hard to capture. This study proposes a new methodology framework to combine statistical models and acoustic propagation for dynamic updates of 2D and 3D traffic noise maps by using a limited number of noise sensors in Taipei City based on multisource data including noise monitoring, vehicle detectors, meteorological data, road characteristics, and socio-demographic data. The hourly mean difference between the predicted and measured noise level is within the range of −6.25 dBA to −4.46 dBA in the 2D noise model. For the 3D noise model, the hourly mean prediction error is within the range of 0.02 dBA to 1.93 dBA. Based on the WHO benchmark for excessive road traffic noise, we found at least 30% of inhabitants in Taipei City are exposed to levels exceeding 53 dBA Lden, and >25% are exposed to noise levels exceeding 45 dBA Lnight. The noise maps not only can help identify vulnerable communities to adopt proper approaches for noise reduction but also can remind the residents to take action to improve their quality of life.

Original languageEnglish
Article number106864
JournalEnvironmental Impact Assessment Review
Volume97
DOIs
Publication statusPublished - 2022 Nov

Keywords

  • Noise mapping
  • Noise modeling
  • Noise monitoring
  • Noise prediction
  • Traffic noise

ASJC Scopus subject areas

  • Geography, Planning and Development
  • Ecology
  • Management, Monitoring, Policy and Law

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