Temperature and cloud condensation nuclei (CCN) sensitivity of orographic precipitation enhanced by a mixed-phase seeder–feeder mechanism:  a case study for the 2015 Cumbria flood

Thomas, Julia; Barrett, Andrew; Hoose, Corinna

doi:https://doi.org/10.5194/acp-23-1987-2023

Articles | Volume 23, issue 3

https://doi.org/10.5194/acp-23-1987-2023

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

https://doi.org/10.5194/acp-23-1987-2023

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

Articles | Volume 23, issue 3

Research article

|

08 Feb 2023

Research article |

| 08 Feb 2023

Temperature and cloud condensation nuclei (CCN) sensitivity of orographic precipitation enhanced by a mixed-phase seeder–feeder mechanism: a case study for the 2015 Cumbria flood

Julia Thomas, Andrew Barrett, and Corinna Hoose

Data sets

Research data for "Temperature and CCN sensitivity of orographic precipitation enhanced by a mixed-phase seeder-feeder mechanism: a case study for the 2015 Cumbria flood" Julia Thomas, Andrew I. Barrett, and Corinna Hoose https://doi.org/10.5445/IR/1000154410

Short summary

We study the sensitivity of rain formation processes during a heavy-rainfall event over mountains to changes in temperature and pollution. Total rainfall increases by 2 % K⁻¹, and a 6 % K⁻¹ increase is found at the highest altitudes, caused by a mixed-phase seeder–feeder mechanism (frozen cloud particles melt and grow further as they fall through a liquid cloud layer). In a cleaner atmosphere this process is enhanced. Thus the risk of severe rainfall in mountains may increase in the future.