Articles | Volume 17, issue 3
https://doi.org/10.5194/amt-17-1051-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-17-1051-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Towards a hygroscopic growth calibration for low-cost PM2.5 sensors
Milan Y. Patel
Department of Chemistry, University of California Berkeley, Berkeley, CA 94720, USA
Pietro F. Vannucci
Department of Chemistry, University of California Berkeley, Berkeley, CA 94720, USA
Jinsol Kim
Department of Earth Sciences, University of Southern California, Los Angeles, CA 90089, USA
William M. Berelson
Department of Earth Sciences, University of Southern California, Los Angeles, CA 90089, USA
Department of Chemistry, University of California Berkeley, Berkeley, CA 94720, USA
Department of Earth and Planetary Sciences, University of California Berkeley, Berkeley, CA 94720, USA
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- A Scalable Calibration Method for Enhanced Accuracy in Dense Air Quality Monitoring Networks A. Winter et al. 10.1021/acs.est.4c08855
- Observational Inferences of NOx and CO Emission Factors for Vehicles and Homes in the San Francisco Bay Area Y. Zhu et al. 10.1021/acsestair.5c00004
- Calibration of PurpleAir low-cost particulate matter sensors: model development for air quality under high relative humidity conditions M. Mathieu-Campbell et al. 10.5194/amt-17-6735-2024
- Sustained Performance of Low-Cost Air Quality Sensors in Long-Term Deployments A. Winter et al. 10.1021/acssensors.5c00566
- A BIM-Oriented Framework for Integrating IoT-Based Air Quality Monitoring Systems Using the AllBIMclass Classification E. Renard-Julián et al. 10.3390/app151910409
- Reliability Assessment of Low-Cost PM Sensors Under High Humidity and High PM Level Outdoor Conditions G. Kumar et al. 10.1109/JSEN.2025.3592796
- Enhancing accuracy of air quality sensors with machine learning to augment large-scale monitoring networks K. Ravindra et al. 10.1038/s41612-024-00833-9
- Plume Detection and Emissions Quantification Potential Using a Dense Sensor Network M. Patel et al. 10.1021/acsestair.5c00069
- Low-Cost Source Apportionment (LoCoSA) of air pollution - literature review of the state of the art D. Bousiotis et al. 10.1016/j.scitotenv.2025.180257
- Exploration of a practical approach to providing RH corrections to low cost sensor networks S. Lekamge & H. Oswin 10.1038/s41612-025-01115-8
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12 citations as recorded by crossref.
- Harmonizing low-cost and regulatory air quality monitoring networks with interpretable semi-supervised learning: Reducing exposure misclassification in underrepresented communities D. Tang et al. 10.1016/j.jhazmat.2025.137893
- Evaluating PurpleAir Sensors: Do They Accurately Reflect Ambient Air Temperature? J. Tse & L. Liang 10.3390/s25103044
- A Scalable Calibration Method for Enhanced Accuracy in Dense Air Quality Monitoring Networks A. Winter et al. 10.1021/acs.est.4c08855
- Observational Inferences of NOx and CO Emission Factors for Vehicles and Homes in the San Francisco Bay Area Y. Zhu et al. 10.1021/acsestair.5c00004
- Calibration of PurpleAir low-cost particulate matter sensors: model development for air quality under high relative humidity conditions M. Mathieu-Campbell et al. 10.5194/amt-17-6735-2024
- Sustained Performance of Low-Cost Air Quality Sensors in Long-Term Deployments A. Winter et al. 10.1021/acssensors.5c00566
- A BIM-Oriented Framework for Integrating IoT-Based Air Quality Monitoring Systems Using the AllBIMclass Classification E. Renard-Julián et al. 10.3390/app151910409
- Reliability Assessment of Low-Cost PM Sensors Under High Humidity and High PM Level Outdoor Conditions G. Kumar et al. 10.1109/JSEN.2025.3592796
- Enhancing accuracy of air quality sensors with machine learning to augment large-scale monitoring networks K. Ravindra et al. 10.1038/s41612-024-00833-9
- Plume Detection and Emissions Quantification Potential Using a Dense Sensor Network M. Patel et al. 10.1021/acsestair.5c00069
- Low-Cost Source Apportionment (LoCoSA) of air pollution - literature review of the state of the art D. Bousiotis et al. 10.1016/j.scitotenv.2025.180257
- Exploration of a practical approach to providing RH corrections to low cost sensor networks S. Lekamge & H. Oswin 10.1038/s41612-025-01115-8
1 citations as recorded by crossref.
Latest update: 08 Oct 2025
Short summary
Low-cost particulate matter (PM) sensors are becoming increasingly common in community monitoring and atmospheric research, but these sensors require proper calibration to provide accurate reporting. Here, we propose a hygroscopic growth calibration scheme that evolves in time to account for seasonal changes in hygroscopic growth. In San Francisco and Los Angeles, CA, applying a seasonal hygroscopic growth calibration can account for sensor biases driven by the seasonal cycles in PM composition.
Low-cost particulate matter (PM) sensors are becoming increasingly common in community...