Assessment of online water-soluble brown carbon measuring systems for aircraft sampling

Zeng, Linghan; Sullivan, Amy P.; Washenfelder, Rebecca A.; Dibb, Jack; Scheuer, Eric; Campos, Teresa L.; Katich, Joseph M.; Levin, Ezra; Robinson, Michael A.; Weber, Rodney J.

doi:https://doi.org/10.5194/amt-14-6357-2021

Articles | Volume 14, issue 10

https://doi.org/10.5194/amt-14-6357-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/amt-14-6357-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 14, issue 10

Research article

|

01 Oct 2021

Research article |

| 01 Oct 2021

Assessment of online water-soluble brown carbon measuring systems for aircraft sampling

Linghan Zeng, Amy P. Sullivan, Rebecca A. Washenfelder, Jack Dibb, Eric Scheuer, Teresa L. Campos, Joseph M. Katich, Ezra Levin, Michael A. Robinson, and Rodney J. Weber

Data sets

Fire Influence on Regional to Global Environments and Air Quality NASA https://doi.org/10.5067/SUBORBITAL/FIREXAQ2019/DATA001

WE-CAN: Western Wildfire Experiment for Cloud Chemistry, Aerosol NCAR https://data.eol.ucar.edu/project/WE-CAN

Short summary

Three online systems for measuring water-soluble brown carbon are compared. A mist chamber and two different particle-into-liquid samplers were deployed on separate research aircraft targeting wildfires and followed a similar detection method using a long-path liquid waveguide with a spectrometer to measure the light absorption from 300 to 700 nm. Detection limits, signal hysteresis and other sampling issues are compared, and further improvements of these liquid-based systems are provided.