Contrasting ice formation in Arctic clouds: surface-coupled vs. surface-decoupled clouds

Griesche, Hannes J.; Ohneiser, Kevin; Seifert, Patric; Radenz, Martin; Engelmann, Ronny; Ansmann, Albert

doi:https://doi.org/10.5194/acp-21-10357-2021

Articles | Volume 21, issue 13

https://doi.org/10.5194/acp-21-10357-2021

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

Special issue:

Arctic mixed-phase clouds as studied during the ACLOUD/PASCAL...

https://doi.org/10.5194/acp-21-10357-2021

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

Articles | Volume 21, issue 13

Research article

|

09 Jul 2021

Research article |

| 09 Jul 2021

Contrasting ice formation in Arctic clouds: surface-coupled vs. surface-decoupled clouds

Hannes J. Griesche, Kevin Ohneiser, Patric Seifert, Martin Radenz, Ronny Engelmann, and Albert Ansmann

Data sets

OCEANET-ATMOSPHERE PollyXT measurements during POLARSTERN cruise PS106 H. Griesche, P. Seifert, R. Engelmann, M. Radenz, and J. Bühl https://doi.org/10.1594/PANGAEA.899458

OCEANET-ATMOSPHERE Cloud radar Mira-35 during PS106 H. Griesche, P. Seifert, R. Engelmann, M. Radenz, and J. Bühl https://doi.org/10.1594/PANGAEA.919556

OCEANET-ATMOSPHERE Microwave Radiometer HATPRO during PS106 H. Griesche, P. Seifert, R. Engelmann, M. Radenz, and J. Bühl https://doi.org/10.1594/PANGAEA.919359

Upper air soundings during POLARSTERN cruise PS106/1 (ARK-XXXI/1.1) H. Schmithüsen https://doi.org/10.1594/PANGAEA.882736

Upper air soundings during POLARSTERN cruise PS106/2 (ARK-XXXI/1.2) H. Schmithüsen https://doi.org/10.1594/PANGAEA.882843

Short summary

Heterogeneous ice formation in Arctic mixed-phase clouds under consideration of their surface-coupling state is investigated. Cloud phase and macrophysical properties were determined by means of lidar and cloud radar measurements, the coupling state, and cloud minimum temperature by radiosonde profiles. Above −15 °C cloud minimum temperature, surface-coupled clouds are more likely to contain ice by a factor of 2–6. By means of a literature survey, causes of the observed effects are discussed.