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Published Erratum

. 2024 Dec 10;24(24):7871.

doi: 10.3390/s24247871.

Correction: Barkjohn et al. Correction and Accuracy of PurpleAir PM_2.5 Measurements for Extreme Wildfire Smoke. Sensors 2022, 22, 9669

Karoline K Barkjohn¹, Amara L Holder¹, Samuel G Frederick^{2

3}, Andrea L Clements¹

Affiliations

Affiliations

¹ US Environmental Protection Agency Office of Research and Development, Research Triangle Park, Durham, NC 27711, USA.
² Former ORAU Student Services Contractor, US Environmental Protection Agency Office of Research and Development, Research Triangle Park, Durham, NC 27711, USA.
³ Currently Department of Atmospheric Sciences, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA.

PMID: 39771956
PMCID: PMC11679817
DOI: 10.3390/s24247871

Published Erratum

Correction: Barkjohn et al. Correction and Accuracy of PurpleAir PM_2.5 Measurements for Extreme Wildfire Smoke. Sensors 2022, 22, 9669

Karoline K Barkjohn et al. Sensors (Basel). 2024.

. 2024 Dec 10;24(24):7871.

doi: 10.3390/s24247871.

Authors

Karoline K Barkjohn¹, Amara L Holder¹, Samuel G Frederick^{2

3}, Andrea L Clements¹

Affiliations

¹ US Environmental Protection Agency Office of Research and Development, Research Triangle Park, Durham, NC 27711, USA.
² Former ORAU Student Services Contractor, US Environmental Protection Agency Office of Research and Development, Research Triangle Park, Durham, NC 27711, USA.
³ Currently Department of Atmospheric Sciences, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA.

PMID: 39771956
PMCID: PMC11679817
DOI: 10.3390/s24247871

Abstract

In the original publication [...].

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Figures

Figure 4
Example time series from the Forks of Salmon, CA, showing the data that were corrected based on different corrections on the PurpleAir map (Woodsmoke, AQandU, LRAPA, ALT cf = 3) and in the literature (Nilson cf_atm and cf_1).

Figure 5
Disagreement between Nilson cf_atm (actually used in Nilson’s paper based on their corrigendum) and the extended US-wide correction, plotted over the range of RH used in each correction, shown at low concentrations (A) and over the full range (B) with gray vertical lines showing the transition zone from the US-wide correction to the quadradic fit.

See this image and copyright information in PMC

Erratum for

Correction and Accuracy of PurpleAir PM_2.5 Measurements for Extreme Wildfire Smoke.
Barkjohn KK, Holder AL, Frederick SG, Clements AL. Barkjohn KK, et al. Sensors (Basel). 2022 Dec 10;22(24):9669. doi: 10.3390/s22249669. Sensors (Basel). 2022. PMID: 36560038 Free PMC article.

References

1. Barkjohn K.K., Holder A.L., Frederick S.G., Clements A.L. Correction and Accuracy of PurpleAir PM2.5 Measurements for Extreme Wildfire Smoke. Sensors. 2022;22:9669. doi: 10.3390/s22249669. - DOI - PMC - PubMed

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