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Use of networks of low cost air quality sensors to quantify air quality in urban settings

Published version
Peer-reviewed

Type

Article

Change log

Authors

Popoola, OAM 
Carruthers, David 
Lad, Chetan 
Bright, Vivien 
Mead, Mohammed 

Abstract

Low cost sensors are becoming increasingly available for studying urban air quality. Here we show how such sensors, deployed as a network, provide unprecedented insights into the patterns of pollutant emissions, in this case at London Heathrow Airport (LHR). Measurements from the sensor network were used to unequivocally distinguish airport emissions from long range transport, and then to infer emission indices from the various airport activities. These were used to constrain an air quality model (ADMS-Airport), creating a powerful predictive tool for modelling pollutant concentrations. For nitrogen dioxide (NO2), the results show that the non-airport component is the dominant fraction (~75%) of annual NO2 around the airport and that despite a predicted increase in airport related NO2 with an additional runway, improvements in road traffic fleet emissions are likely to more than offset this increase. This work focusses on London Heathrow Airport, but the sensor network approach we demonstrate has general applicability for a wide range of environmental monitoring studies and air pollution interventions.

Description

Keywords

Air quality, Low cost sensors, Dense sensor network, Scale separation, Air quality model, Long term measurements

Journal Title

Atmospheric Environment

Conference Name

Journal ISSN

1352-2310
1873-2844

Volume Title

194

Publisher

Elsevier
Sponsorship
Natural Environment Research Council (NE/I007490/1)
Natural Environment Research Council (NE/N007085/1)
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