Two-year statistics of columnar-ice production in stratiform clouds over Hyytiälä, Finland: environmental conditions and the relevance to secondary ice production

Li, Haoran; Möhler, Ottmar; Petäjä, Tuukka; Moisseev, Dmitri

doi:https://doi.org/10.5194/acp-21-14671-2021

Articles | Volume 21, issue 19

https://doi.org/10.5194/acp-21-14671-2021

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

Special issue:

Ice nucleation in the boreal atmosphere

https://doi.org/10.5194/acp-21-14671-2021

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

Articles | Volume 21, issue 19

Research article

|

05 Oct 2021

Research article |

| 05 Oct 2021

Two-year statistics of columnar-ice production in stratiform clouds over Hyytiälä, Finland: environmental conditions and the relevance to secondary ice production

Haoran Li, Ottmar Möhler, Tuukka Petäjä, and Dmitri Moisseev

Data sets

Hyytiala W-band cloud radar 2017–2019 Dmitri Moisseev https://doi.org/10.23729/5aab6b78-90c9-49ab-8264-f4168528a0f3

con-iglo-12-23, icon-iglo-36-47, gdas1 model data; 2018-02-01 to 2020-04-30; from Hyytiälä CLU https://hdl.handle.net/21.12132/2.fdcadfd7b8ac4c4d

Model code and software

Hyytiala W-band radar spectra data processing tool Haoran Li https://doi.org/10.5281/zenodo.5542678

Short summary

In natural clouds, ice-nucleating particles are expected to be rare above –10 °C. In the current paper, we found that the formation of ice columns is frequent in stratiform clouds and is associated with increased precipitation intensity and liquid water path. In single-layer shallow clouds, the production of ice columns was attributed to secondary ice production, despite the rime-splintering process not being expected to take place in such clouds.