Transit Pollution Exposure Monitoring using Low-Cost Wearable Sensors

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Hossein Motlagh , N , Zaidan , M A , Fung , P L , Lagerspetz , E , Aula , J K , Varjonen , S , Siekkinen , M , Rebeiro-Hargrave , A , Petäjä , T , Matsumi , Y , Kulmala , M , Hussein , T , Nurmi , P & Tarkoma , S 2021 , ' Transit Pollution Exposure Monitoring using Low-Cost Wearable Sensors ' , Transportation Research. Part D: Transport & Environment , vol. 98 , 102981 . https://doi.org/10.1016/j.trd.2021.102981

Title: Transit Pollution Exposure Monitoring using Low-Cost Wearable Sensors
Author: Hossein Motlagh, Naser; Zaidan, Martha Arbayani; Fung, Pak Lun; Lagerspetz, Eemil; Aula, Juho Kasimir; Varjonen, Samu; Siekkinen, Matti; Rebeiro-Hargrave, Andrew; Petäjä, Tuukka; Matsumi, Yutaka; Kulmala, Markku; Hussein, Tareq; Nurmi, Petteri; Tarkoma, Sasu
Contributor organization: Department of Computer Science
Helsinki Institute of Sustainability Science (HELSUS)
Institute for Atmospheric and Earth System Research (INAR)
Global Atmosphere-Earth surface feedbacks
INAR Physics
Air quality research group
Department of Physics
Content-Centric Structures and Networking research group / Sasu Tarkoma
Helsinki Institute for Information Technology
Date: 2021-09
Language: eng
Number of pages: 17
Belongs to series: Transportation Research. Part D: Transport & Environment
ISSN: 1361-9209
DOI: https://doi.org/10.1016/j.trd.2021.102981
URI: http://hdl.handle.net/10138/335031
Abstract: Transit activities are a significant contributor to a person's daily exposure to pollutants. Currently obtaining accurate information about the personal exposure of a commuter is challenging as existing solutions either have a coarse monitoring resolution that omits subtle variations in pollutant concentrations or are laborious and costly to use. We contribute by systematically analysing the feasibility of using wearable low-cost pollution sensors for capturing the total exposure of commuters. Through extensive experiments carried out in the Helsinki metropolitan region, we demonstrate that low-cost sensors can capture the overall exposure with sufficient accuracy, while at the same time providing insights into variations within transport modalities. We also demonstrate that wearable sensors can capture subtle variations caused by differing routes, passenger density, location within a carriage, and other factors. For example, we demonstrate that location within the vehicle carriage can result in up to 25% increase in daily pollution exposure -- a significant difference that existing solutions are unable to capture. Finally, we highlight the practical benefits of low-cost sensors as a pollution monitoring solution by introducing applications that are enabled by low-cost wearable sensors.
Subject: 114 Physical sciences
air quality
portable sensors
Internet of things
wearable sensors
public transport
deposited dosage
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion


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