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The rise of low-cost sensing for managing air pollution in cities

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TLDR
In this article, the authors illustrate the drivers behind current rises in the use of low-cost sensors for air pollution management in cities, whilst addressing the major challenges for their effective implementation.
Abstract
Ever growing populations in cities are associated with a major increase in road vehicles and air pollution. The overall high levels of urban air pollution have been shown to be of a significant risk to city dwellers. However, the impacts of very high but temporally and spatially restricted pollution, and thus exposure, are still poorly understood. Conventional approaches to air quality monitoring are based on networks of static and sparse measurement stations. However, these are prohibitively expensive to capture tempo-spatial heterogeneity and identify pollution hotspots, which is required for the development of robust real-time strategies for exposure control. Current progress in developing low-cost micro-scale sensing technology is radically changing the conventional approach to allow real-time information in a capillary form. But the question remains whether there is value in the less accurate data they generate. This article illustrates the drivers behind current rises in the use of low-cost sensors for air pollution management in cities, whilst addressing the major challenges for their effective implementation.

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Citations
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Applications of low-cost sensing technologies for air quality monitoring and exposure assessment: How far have they gone?

TL;DR: In this article, the authors conducted a comprehensive literature search including both the scientific and grey literature, and concluded that there is no clear answer to the question, due to a lack of: sensor/monitor manufacturers' quantitative specifications of performance, consensus regarding recommended end-use and associated minimal performance targets of these technologies, and the ability of the prospective users to formulate the requirements for their applications, or conditions of the intended use.
Journal Article

Real-time sensors for indoor air monitoring and challenges ahead in deploying them to urban buildings

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Journal ArticleDOI

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References
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Book ChapterDOI

Air pollution monitoring network of PM2.5, NO2 and radiation of 137Cs

TL;DR: In this paper, the authors focus on the detection and monitoring of air pollutants [fine particulate matter (PM2.5) and nitrogen dioxide (NO2)] and radiation using portable sensors designed for outdoor environments.
Book ChapterDOI

Progress in local scale flow and dispersion modelling

TL;DR: In this paper, the authors provide an overview of current understanding of local scale flows and dispersion with attention to the urban canopy layer and related spatial and temporal scales, highlighting key processes at various spatial-temporal scales.
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