Examination of brown carbon absorption from wildfires in the western US during the WE-CAN study

Sullivan, Amy P.; Pokhrel, Rudra P.; Shen, Yingjie; Murphy, Shane M.; Toohey, Darin W.; Campos, Teresa; Lindaas, Jakob; Fischer, Emily V.; Collett Jr., Jeffrey L.

doi:https://doi.org/10.5194/acp-22-13389-2022

Articles | Volume 22, issue 20

https://doi.org/10.5194/acp-22-13389-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-22-13389-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 22, issue 20

Research article

|

18 Oct 2022

Research article |

| 18 Oct 2022

Examination of brown carbon absorption from wildfires in the western US during the WE-CAN study

Amy P. Sullivan, Rudra P. Pokhrel, Yingjie Shen, Shane M. Murphy, Darin W. Toohey, Teresa Campos, Jakob Lindaas, Emily V. Fischer, and Jeffrey L. Collett Jr.

Supplement

https://doi.org/10.5194/acp-22-13389-2022-supplement

Data sets

PILS1 Amy P. Sullivan https://doi.org/10.26023/9H07-MD9K-430D

PILS1 Amy P. Sullivan https://doi.org/10.26023/CRHY-NDT9-C30V

PILS2 Amy P. Sullivan https://doi.org/10.26023/7TAN-TZMD-680Y

PAS Rudra P. Pokhrel https://doi.org/10.26023/K8P0-X4T3-TN06

CO Teresa Campos https://doi.org/10.26023/NNYM-Z18J-PX0Q

Meteorological Data and Coordinates C-130 Facility https://doi.org/10.26023/G766-BS71-9V03

UHSAS Darin W. Toohey https://doi.org/10.26023/BZ4F-EAC4-290W

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Short summary

During the WE-CAN (Western Wildfire Experiment for Cloud Chemistry, Aerosol Absorption and Nitrogen) study, brown carbon (BrC) absorption was measured on the NSF/NCAR C-130 aircraft using a particle-into-liquid sampler and photoacoustic aerosol absorption spectrometer. Approximately 45 % of the BrC absorption in wildfires was observed to be due to water-soluble species. The ratio of BrC absorption to WSOC or ΔCO showed no clear dependence on fire dynamics or the time since emission over 9 h.