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<p>Urban air pollution remains a critical environmental and public health issue, necessitating accurate, timely, and spatially detailed monitoring. Over the past two decades (approximately 2000–2024), satellite remote sensing has emerged as a powerful complement to traditional ground-based measurements, offering extensive spatial coverage and consistent temporal observations. This global review synthesizes advances in satellite-based monitoring of urban air emissions across diverse regions worldwide, with a focus on the detection and quantification of air pollutants and greenhouse gases such as ozone (O₃), nitrogen dioxide (NO₂), particulate matter (PM), methane (CH₄), and carbon dioxide (CO₂). The strengths and limitations of various satellite sensors, data retrieval methods, and integration techniques are examined in the context of urban-scale air quality assessment and policy development. Key challenges, including resolution limitations, data validation, and regulatory integration, are discussed, along with proposed directions for future research. Emphasis is placed on the importance of interdisciplinary collaboration, enhanced data accessibility, and the development of user-friendly methodologies to bridge the gap between satellite capabilities and the needs of urban air quality management.</p>

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Advances in Satellite-Based Monitoring of Urban Emission Sources and Air Quality: A Review

  • 期刊论文

  • 发表日期：

    2026年1月7日

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  • Saba Naderi,
  • Xuelin Tian,
  • Chunjiang An

摘要

Urban air pollution remains a critical environmental and public health issue, necessitating accurate, timely, and spatially detailed monitoring. Over the past two decades (approximately 2000–2024), satellite remote sensing has emerged as a powerful complement to traditional ground-based measurements, offering extensive spatial coverage and consistent temporal observations. This global review synthesizes advances in satellite-based monitoring of urban air emissions across diverse regions worldwide, with a focus on the detection and quantification of air pollutants and greenhouse gases such as ozone (O₃), nitrogen dioxide (NO₂), particulate matter (PM), methane (CH₄), and carbon dioxide (CO₂). The strengths and limitations of various satellite sensors, data retrieval methods, and integration techniques are examined in the context of urban-scale air quality assessment and policy development. Key challenges, including resolution limitations, data validation, and regulatory integration, are discussed, along with proposed directions for future research. Emphasis is placed on the importance of interdisciplinary collaboration, enhanced data accessibility, and the development of user-friendly methodologies to bridge the gap between satellite capabilities and the needs of urban air quality management.