Articles | Volume 14, issue 6
https://doi.org/10.5194/amt-14-4617-2021
https://doi.org/10.5194/amt-14-4617-2021
Research article
 | 
22 Jun 2021
Research article |  | 22 Jun 2021

Development and application of a United States-wide correction for PM2.5 data collected with the PurpleAir sensor

Karoline K. Barkjohn, Brett Gantt, and Andrea L. Clements

Related authors

Field evaluation of low-cost particulate matter sensors in high- and low-concentration environments
Tongshu Zheng, Michael H. Bergin, Karoline K. Johnson, Sachchida N. Tripathi, Shilpa Shirodkar, Matthew S. Landis, Ronak Sutaria, and David E. Carlson
Atmos. Meas. Tech., 11, 4823–4846, https://doi.org/10.5194/amt-11-4823-2018,https://doi.org/10.5194/amt-11-4823-2018, 2018
Short summary
Using Low Cost Sensors to Measure Ambient Particulate Matter Concentrations and On-Road Emissions Factors
Karoline K. Johnson, Michael H. Bergin, Armistead G. Russell, and Gayle S. W. Hagler
Atmos. Meas. Tech. Discuss., https://doi.org/10.5194/amt-2015-331,https://doi.org/10.5194/amt-2015-331, 2016
Revised manuscript not accepted
Short summary

Related subject area

Subject: Aerosols | Technique: In Situ Measurement | Topic: Validation and Intercomparisons
Field intercomparison of ice nucleation measurements: the Fifth International Workshop on Ice Nucleation Phase 3 (FIN-03)
Paul J. DeMott, Jessica A. Mirrielees, Sarah Suda Petters, Daniel J. Cziczo, Markus D. Petters, Heinz G. Bingemer, Thomas C. J. Hill, Karl Froyd, Sarvesh Garimella, A. Gannet Hallar, Ezra J. T. Levin, Ian B. McCubbin, Anne E. Perring, Christopher N. Rapp, Thea Schiebel, Jann Schrod, Kaitlyn J. Suski, Daniel Weber, Martin J. Wolf, Maria Zawadowicz, Jake Zenker, Ottmar Möhler, and Sarah D. Brooks
Atmos. Meas. Tech., 18, 639–672, https://doi.org/10.5194/amt-18-639-2025,https://doi.org/10.5194/amt-18-639-2025, 2025
Short summary
Performance of a low-cost optical particle counter (Alphasense OPC-N3) for estimating size-resolved dust emission flux using eddy covariance
Sylvain Dupont, Eric Lamaud, Mark R. Irvine, Jean-Marc Bonnefond, Adolfo Gonzalez-Romero, Andrés Alastuey, Cristina González-Flórez, Xavier Querol, Konrad Kandler, Martina Klose, and Carlos Pérez García-Pando
Atmos. Meas. Tech. Discuss., https://doi.org/10.5194/amt-2024-187,https://doi.org/10.5194/amt-2024-187, 2024
Revised manuscript accepted for AMT
Short summary
Calibration of PurpleAir low-cost particulate matter sensors: model development for air quality under high relative humidity conditions
Martine E. Mathieu-Campbell, Chuqi Guo, Andrew P. Grieshop, and Jennifer Richmond-Bryant
Atmos. Meas. Tech., 17, 6735–6749, https://doi.org/10.5194/amt-17-6735-2024,https://doi.org/10.5194/amt-17-6735-2024, 2024
Short summary
Testing ion exchange resin for quantifying bulk and throughfall deposition of macro- and micro-elements in forests
Marleen A. E. Vos, Wim de Vries, G. F. (Ciska) Veen, Marcel R. Hoosbeek, and Frank J. Sterck
Atmos. Meas. Tech., 17, 6579–6594, https://doi.org/10.5194/amt-17-6579-2024,https://doi.org/10.5194/amt-17-6579-2024, 2024
Short summary
Classification accuracy and compatibility across devices of a new Rapid-E+ flow cytometer
Branko Sikoparija, Predrag Matavulj, Isidora Simovic, Predrag Radisic, Sanja Brdar, Vladan Minic, Danijela Tesendic, Evgeny Kadantsev, Julia Palamarchuk, and Mikhail Sofiev
Atmos. Meas. Tech., 17, 5051–5070, https://doi.org/10.5194/amt-17-5051-2024,https://doi.org/10.5194/amt-17-5051-2024, 2024
Short summary

Cited articles

Air quality index reporting: 64 Fed. Reg 42530, Office of the Federal Register, National Archives and Records Administration, Washington, DC, USA, available at: https://www.govinfo.gov/app/details/FR-1999-08-04/99-19433/summary (last access: 17 June 2021), 1991. 
Al-Thani, H., Koç, M., and Isaifan, R. J.: A review on the direct effect of particulate atmospheric pollution on materials and its mitigation for sustainable cities and societies, Environ. Sci. Pollut. R., 25, 27839–27857, https://doi.org/10.1007/s11356-018-2952-8, 2018. 
Apte, J. S., Marshall, J. D., Cohen, A. J., and Brauer, M.: Addressing Global Mortality from Ambient PM2.5, Environ. Sci. Technol., 49, 8057–8066, https://doi.org/10.1021/acs.est.5b01236, 2015. 
Ardon-Dryer, K., Dryer, Y., Williams, J. N., and Moghimi, N.: Measurements of PM2.5 with PurpleAir under atmospheric conditions, Atmos. Meas. Tech., 13, 5441–5458, https://doi.org/10.5194/amt-13-5441-2020, 2020. 
Barkjohn, K. K.: Dataset Development and Application of a United States wide correction for PM2.5 data collected with the PurpleAir sensor, U.S. EPA Office of Research and Development (ORD) [Data set], https://doi.org/10.23719/1522388, 2021. 
Download
Short summary
Although widely used, air sensor measurements are often biased. In this work we develop a correction with a relative humidity term that reduces the bias and improves consistency between different United States regions. This correction equation, along with proposed data cleaning criteria, has been applied to PurpleAir PM2.5 measurements across the US on the AirNow Fire and Smoke Map and has the potential to be successfully used in other air quality and public health applications.
Share