Physicochemical properties of charcoal aerosols derived from biomass pyrolysis affect their ice-nucleating abilities at cirrus and mixed-phase cloud conditions

Mahrt, Fabian; Rösch, Carolin; Gao, Kunfeng; Dreimol, Christopher H.; Zawadowicz, Maria A.; Kanji, Zamin A.

doi:https://doi.org/10.5194/acp-23-1285-2023

Articles | Volume 23, issue 2

https://doi.org/10.5194/acp-23-1285-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-23-1285-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 23, issue 2

Research article

|

24 Jan 2023

Research article |

| 24 Jan 2023

Physicochemical properties of charcoal aerosols derived from biomass pyrolysis affect their ice-nucleating abilities at cirrus and mixed-phase cloud conditions

Fabian Mahrt, Carolin Rösch, Kunfeng Gao, Christopher H. Dreimol, Maria A. Zawadowicz, and Zamin A. Kanji

Data sets

Physicochemical properties of charcoal aerosols derived from biomass pyrolysis affect their ice-nucleating abilities at cirrus and mixed-phase cloud conditions F. Mahrt et al. https://doi.org/10.3929/ethz-b-000591583

Model code and software

KPratherLab/FATESmatlabToolKit: Version 1 of FATES (v1.0.0) C. M. Sultana and G. C. Cornwell https://doi.org/10.5281/zenodo.398847

Short summary

Major aerosol types emitted by biomass burning include soot, ash, and charcoal particles. Here, we investigated the ice nucleation activity of 400 nm size-selected particles of two different pyrolyis-derived charcoal types in the mixed phase and cirrus cloud regime. We find that ice nucleation is constrained to cirrus cloud conditions, takes place via pore condensation and freezing, and is largely governed by the particle porosity and mineral content.