Chemical properties and single-particle mixing state of soot aerosol in Houston during the TRACER campaign

Farley, Ryan N.; Lee, James E.; Rivellini, Laura-Hélèna; Lee, Alex K. Y.; Dal Porto, Rachael; Cappa, Christopher D.; Gorkowski, Kyle; Shawon, Abu Sayeed Md; Benedict, Katherine B.; Aiken, Allison C.; Dubey, Manvendra K.; Zhang, Qi

doi:https://doi.org/10.5194/acp-24-3953-2024

Articles | Volume 24, issue 7

https://doi.org/10.5194/acp-24-3953-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-24-3953-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 24, issue 7

Research article

|

03 Apr 2024

Research article |

| 03 Apr 2024

Chemical properties and single-particle mixing state of soot aerosol in Houston during the TRACER campaign

Ryan N. Farley, James E. Lee, Laura-Hélèna Rivellini, Alex K. Y. Lee, Rachael Dal Porto, Christopher D. Cappa, Kyle Gorkowski, Abu Sayeed Md Shawon, Katherine B. Benedict, Allison C. Aiken, Manvendra K. Dubey, and Qi Zhang

Supplement

https://doi.org/10.5194/acp-24-3953-2024-supplement

Data sets

TRACER-CAT laser only SP-AMS measurements Ryan Farley and Qi Zhang https://doi.org/10.5439/1958716

Model code and software

TOF-AMS software downloads University of Colorado https://cires1.colorado.edu/jimenez-group/ToFAMSResources/ToFSoftware/index.html

HYSPLIT model NOAA https://www.ready.noaa.gov/HYSPLIT.php

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Short summary

The black carbon aerosol composition and mixing state were characterized using a soot particle aerosol mass spectrometer. Single-particle measurements revealed the major role of atmospheric processing in modulating the black carbon mixing state. A significant fraction of soot particles were internally mixed with oxidized organic aerosol and sulfate, with implications for activation as cloud nuclei.