Pollutant emission factors data for smoldering conifer forest duff from Oregon
Carbonaceous gases and fine particulate matter (PM2.5) from smoldering conifer forest duff were sampled in four bench-scale experimental burns in a combustion facility at Oregon State University. An infrared camera measured surface radiance of the smoldering duff during the burns. The duff was harve...
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| منشور في: |
2025
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| _version_ | 1852017390911488000 |
|---|---|
| author | Shawn P. Urbanski (14522736) |
| author2 | Shannon L. Kay (3823312) Stephen P. Baker (2415007) Emily N. Lincoln (2488315) Andrew A. Ross (22105202) David L. Blunck (10971840) |
| author2_role | author author author author author |
| author_facet | Shawn P. Urbanski (14522736) Shannon L. Kay (3823312) Stephen P. Baker (2415007) Emily N. Lincoln (2488315) Andrew A. Ross (22105202) David L. Blunck (10971840) |
| author_role | author |
| dc.creator.none.fl_str_mv | Shawn P. Urbanski (14522736) Shannon L. Kay (3823312) Stephen P. Baker (2415007) Emily N. Lincoln (2488315) Andrew A. Ross (22105202) David L. Blunck (10971840) |
| dc.date.none.fl_str_mv | 2025-08-21T23:45:33Z |
| dc.identifier.none.fl_str_mv | 10.2737/RDS-2025-0046 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/dataset/Pollutant_emission_factors_data_for_smoldering_conifer_forest_duff_from_Oregon/29964017 |
| dc.rights.none.fl_str_mv | CC0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Environmental sciences smoldering combustion air quality Fire Prescribed fire environment Smoke emission factors |
| dc.title.none.fl_str_mv | Pollutant emission factors data for smoldering conifer forest duff from Oregon |
| dc.type.none.fl_str_mv | Dataset info:eu-repo/semantics/publishedVersion dataset |
| description | Carbonaceous gases and fine particulate matter (PM2.5) from smoldering conifer forest duff were sampled in four bench-scale experimental burns in a combustion facility at Oregon State University. An infrared camera measured surface radiance of the smoldering duff during the burns. The duff was harvested from Douglas-fir forest stands in eastern Oregon in April 2021. Duff samples were burned in May 2021. Samples were 43 centimeters (cm) x 43 cm in area and approximately 4 cm thick. The gases measured were carbon dioxide (CO2), carbon monoxide (CO), methane (CH4), and 19 light (≤ 6 carbon [C]) non-methane hydrocarbons (NMHC). The gas and PM2.5 measurements were used to calculate emission factors (EFX) for each species (mass of X emitted per mass of duff consumed). The IR camera images were processed to provide measurements of surface temperature (T), fire radiative power (FRP), and area of active smoldering for the duff. A Bayesian framework analysis was used to jointly fit an autoregressive model to impute missing T values (T during emission sampling) and a multivariate normal data model to fit five emission factor (EF) responses (EFCO2, EFCO, EFCH4, EFNMHC, and EFPM2.5) to the temperature time series. The Bayesian framework analysis provided best-estimate EF which represent the true EF of the natural, unperturbed smoldering duff along with 95% credible intervals. This data publication includes all observed and Bayesian EF responses at the sample-level as well as summarized to the burn-level.<br>Prescribed fires can be a significant source of air pollution with negative consequences for public health and safety. Therefore, smoke management is a key element in the planning and execution of prescribed fires. EFs which quantify the relative abundance of pollutants released by wildland fires, are a needed input for the emission calculations which are essential to effective smoke management. A key challenge when conducting prescribed fires near sensitive receptors such as roadways, communities, and outdoor recreational sites, is limiting smoke production from long-term smoldering of coarse dead wood and duff. These data were collected to address a knowledge gap in duff EF and enable improved emission estimates for wildland fires in western U.S. forests with significant duff loadings.<br>For more information about this study and these data, see Urbanski et al. (2025). |
| eu_rights_str_mv | openAccess |
| id | Manara_3ee0772f7345cfece17ef827ade9efb2 |
| identifier_str_mv | 10.2737/RDS-2025-0046 |
| network_acronym_str | Manara |
| network_name_str | ManaraRepo |
| oai_identifier_str | oai:figshare.com:article/29964017 |
| publishDate | 2025 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC0 |
| spelling | Pollutant emission factors data for smoldering conifer forest duff from OregonShawn P. Urbanski (14522736)Shannon L. Kay (3823312)Stephen P. Baker (2415007)Emily N. Lincoln (2488315)Andrew A. Ross (22105202)David L. Blunck (10971840)Environmental sciencessmoldering combustionair qualityFirePrescribed fireenvironmentSmokeemission factorsCarbonaceous gases and fine particulate matter (PM2.5) from smoldering conifer forest duff were sampled in four bench-scale experimental burns in a combustion facility at Oregon State University. An infrared camera measured surface radiance of the smoldering duff during the burns. The duff was harvested from Douglas-fir forest stands in eastern Oregon in April 2021. Duff samples were burned in May 2021. Samples were 43 centimeters (cm) x 43 cm in area and approximately 4 cm thick. The gases measured were carbon dioxide (CO2), carbon monoxide (CO), methane (CH4), and 19 light (≤ 6 carbon [C]) non-methane hydrocarbons (NMHC). The gas and PM2.5 measurements were used to calculate emission factors (EFX) for each species (mass of X emitted per mass of duff consumed). The IR camera images were processed to provide measurements of surface temperature (T), fire radiative power (FRP), and area of active smoldering for the duff. A Bayesian framework analysis was used to jointly fit an autoregressive model to impute missing T values (T during emission sampling) and a multivariate normal data model to fit five emission factor (EF) responses (EFCO2, EFCO, EFCH4, EFNMHC, and EFPM2.5) to the temperature time series. The Bayesian framework analysis provided best-estimate EF which represent the true EF of the natural, unperturbed smoldering duff along with 95% credible intervals. This data publication includes all observed and Bayesian EF responses at the sample-level as well as summarized to the burn-level.<br>Prescribed fires can be a significant source of air pollution with negative consequences for public health and safety. Therefore, smoke management is a key element in the planning and execution of prescribed fires. EFs which quantify the relative abundance of pollutants released by wildland fires, are a needed input for the emission calculations which are essential to effective smoke management. A key challenge when conducting prescribed fires near sensitive receptors such as roadways, communities, and outdoor recreational sites, is limiting smoke production from long-term smoldering of coarse dead wood and duff. These data were collected to address a knowledge gap in duff EF and enable improved emission estimates for wildland fires in western U.S. forests with significant duff loadings.<br>For more information about this study and these data, see Urbanski et al. (2025).2025-08-21T23:45:33ZDatasetinfo:eu-repo/semantics/publishedVersiondataset10.2737/RDS-2025-0046https://figshare.com/articles/dataset/Pollutant_emission_factors_data_for_smoldering_conifer_forest_duff_from_Oregon/29964017CC0info:eu-repo/semantics/openAccessoai:figshare.com:article/299640172025-08-21T23:45:33Z |
| spellingShingle | Pollutant emission factors data for smoldering conifer forest duff from Oregon Shawn P. Urbanski (14522736) Environmental sciences smoldering combustion air quality Fire Prescribed fire environment Smoke emission factors |
| status_str | publishedVersion |
| title | Pollutant emission factors data for smoldering conifer forest duff from Oregon |
| title_full | Pollutant emission factors data for smoldering conifer forest duff from Oregon |
| title_fullStr | Pollutant emission factors data for smoldering conifer forest duff from Oregon |
| title_full_unstemmed | Pollutant emission factors data for smoldering conifer forest duff from Oregon |
| title_short | Pollutant emission factors data for smoldering conifer forest duff from Oregon |
| title_sort | Pollutant emission factors data for smoldering conifer forest duff from Oregon |
| topic | Environmental sciences smoldering combustion air quality Fire Prescribed fire environment Smoke emission factors |