Articles | Volume 11, issue 8
Atmos. Meas. Tech., 11, 4605–4615, 2018
https://doi.org/10.5194/amt-11-4605-2018
Atmos. Meas. Tech., 11, 4605–4615, 2018
https://doi.org/10.5194/amt-11-4605-2018

Research article 08 Aug 2018

Research article | 08 Aug 2018

Long-term evaluation of air sensor technology under ambient conditions in Denver, Colorado

Stephen Feinberg et al.

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Crilley, L. R., Shaw, M., Pound, R., Kramer, L. J., Price, R., Young, S., Lewis, A. C., and Pope, F. D.: Evaluation of a low-cost optical particle counter (Alphasense OPC-N2) for ambient air monitoring, Atmos. Meas. Tech., 11, 709–720, https://doi.org/10.5194/amt-11-709-2018, 2018. 
Cross, E. S., Williams, L. R., Lewis, D. K., Magoon, G. R., Onasch, T. B., Kaminsky, M. L., Worsnop, D. R., and Jayne, J. T.: Use of electrochemical sensors for measurement of air pollution: correcting interference response and validating measurements, Atmos. Meas. Tech., 10, 3575–3588, https://doi.org/10.5194/amt-10-3575-2017, 2017. 
Gao, M., Cao, J., and Seto, E.: A distributed network of low-cost continuous reading sensors to measure spatiotemporal variations of PM2.5 in Xi'an, China, Environ. Pollut., 199, 56–65, https://doi.org/10.1016/j.envpol.2015.01.013, 2015. 
Hagan, D. H., Isaacman-VanWertz, G., Franklin, J. P., Wallace, L. M. M., Kocar, B. D., Heald, C. L., and Kroll, J. H.: Calibration and assessment of electrochemical air quality sensors by co-location with regulatory-grade instruments, Atmos. Meas. Tech., 11, 315–328, https://doi.org/10.5194/amt-11-315-2018, 2018. 
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Air pollution sensors are quickly proliferating for use in a wide variety of applications, with a low price point that supports use in high-density networks, citizen science, and individual consumer use. We evaluated the performance of particulate matter, ozone, and nitrogen dioxide sensors in Denver, Colorado, over a period of seven months. We found that these sensors could vary greatly in their performance, but some were able to replicate trends measured by traditional instruments.