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August 5, 2026The Science of The Total EnvironmentOpen Access

Citywide modeling and mapping of environmental sound exposure in Dhaka, Bangladesh

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Authors

MLMartha LeeABAnisur Rahman BayazidRARaphael Arku

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Overview

Citywide modeling reveals high environmental sound exposure in Dhaka, suggesting urgent management needs.

Key Points

  • The aim is to estimate environmental sound exposure in Dhaka to address noise as an urgent health concern.
  • Developed sound exposure estimates using measurements from 67 monitoring sites.
  • Applied land-use regression models for average 24-h, daytime, nighttime, and day-evening-nighttime sound levels.
  • Evaluated model performance through cross-validation with strong metrics.
  • Approximately 12 million Dhaka residents exceed WHO traffic noise guidelines for nighttime (L night: 45 dBA).
  • An estimated 0.9 million residents face noise levels >70 dBA, a threshold for potential hearing loss.
  • Model performance metrics included cross-validated R² values of 0.66-0.72 and RMSE of 3.4-4.3 dBA.

Cite This Study

Lee et al. (2026) studied this question.

synapsesocial.com/papers/6a72e7c1226790f370656ef8https://doi.org/10.1016/j.scitotenv.2026.182104
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