The role of contact angle and pore width on pore condensation and freezing

David, Robert O.; Fahrni, Jonas; Marcolli, Claudia; Mahrt, Fabian; Brühwiler, Dominik; Kanji, Zamin A.

doi:https://doi.org/10.5194/acp-20-9419-2020

Articles | Volume 20, issue 15

https://doi.org/10.5194/acp-20-9419-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-20-9419-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 15

Research article

|

12 Aug 2020

Research article |

| 12 Aug 2020

The role of contact angle and pore width on pore condensation and freezing

Robert O. David, Jonas Fahrni, Claudia Marcolli, Fabian Mahrt, Dominik Brühwiler, and Zamin A. Kanji

Data sets

The Role of Contact Angle and Pore Width on Pore Condensation and Freezing Robert O. David, Jonas Fahrni, Claudia Marcolli, Fabian Mahrt, Dominik Brühwiler, and Zamin A. Kanji https://doi.org/10.3929/ethz-b-000420623

Short summary

Ice crystal formation plays an important role in controlling the Earth's climate. However, the mechanisms responsible for ice formation in the atmosphere are still uncertain. Here we use surrogates for atmospherically relevant porous particles to determine the role of pore diameter and wettability on the ability of porous particles to nucleate ice in the atmosphere. Our results are consistent with the pore condensation and freeing mechanism.