Found 9849 publications. Showing page 321 of 394:
2014
Research communities, engagement campaigns, and administrative agents are increasingly valuing low-cost air-quality monitoring technologies, despite data quality concerns. Mobile low-cost sensors have already been used for delivering a spatial representation of pollutant concentrations, though less attention is given to their uncertainty quantification. Here, we perform static/on-bike inter-comparison tests to assess the performance of the Snifferbike sensor kit in measuring outdoor PM2.5 (Particulate Matter < 2.5 μm). We build a network of citizen-operated Snifferbike sensors in Kristiansand, Norway, and calibrate the measurements using Machine Learning techniques to estimate the concentrations of PM2.5 along the city roads. We also propose a method to estimate the minimum number of PM2.5 measurements required per road segment to assure data representativeness. The co-location of three Snifferbike kits (Sensirion SPS30) at the monitoring station showed a RMSD of 7.55 μg m−3. We approximate that one km h−1 increase in the speed of the bikes will add 0.03 - 0.04 μg m−3 to the Standard Deviation of the Snifferbike PM2.5 measurements. We estimate that at least 27 measurements per road segment are required (50 m here) if the data are sufficiently dispersed over time. We recommend calibrating the mobile sensors when they coincide with reference monitoring stations.
Elsevier
2023
Citizen science and its role in sustainable development: status, trends, issues, and opportunities. Advances in knowledge acquisition, transfer, and management
2017
2017
Citizen participation approaches in environmental health. Molecular and integrative toxicology
2016
2020
CITI-SENSE. Final report on methodology. Deliverable 6.4, Work Package 6. NILU report
This document is a technical description of the CITI-SENSE main products described in the CITI-SENSE portfolio of products. These products were developed, extended or adjusted in the CITI-SENSE project to fulfil and maintain the overall chain «sensor-platform-products-user» with primary focus on the interface and link between the products and the end users.
Products are described from a developer¿s view and include information about the case studies and their requirements, technical description of architecture, code structures and database and storage platforms. Information about current status as of June 30 2016, with suggested improvements and lessons learned during the project process, are included for each product.
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