The dataset Data from May 2021 SERDP - OSU Smoldering Emissions Lab Experiment, DOI 10.5281/zenodo.5636928, published on Nov 4, 2021, was found to contain errors associated with an emission sampling artifact. The dataset has been supplanted by the dataset Pollutant emission factors data for smoldering conifer forest duff from Oregon, DOI 10.2737/RDS-2025-0046, which corrects for the sampling artifacts: Urbanski, Shawn P.; Kay, Shannon L.; Baker, Stephen P.; Lincoln, Emily N.; Ross, Andrew A.; Blunck, David L. 2025. Pollutant emission factors data for smoldering conifer forest duff from Oregon. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2025-0046 Details of the errors in the original dataset (DOI 0.5281/zenodo.5636928) and their correction in the revised dataset (DOI 10.2737/RDS-2025-0046) are provided in: Urbanski, Shawn P.; Kay, Shannon; Baker, Stephen P.; Lincoln, Emily N.; Ross, Andrew A.; Blunck, David. 2024. Pollutant emission factors for smoldering conifer forest duff. Gen. Tech. Rep. RMRS-GTR-444. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. 45 p. https://doi.org/10.2737/RMRS-GTR-444.