Large-eddy simulation of a two-layer boundary-layer cloud system from the Arctic Ocean 2018 expedition

Bulatovic, Ines; Savre, Julien; Tjernström, Michael; Leck, Caroline; Ekman, Annica M. L.

doi:https://doi.org/10.5194/acp-23-7033-2023

Articles | Volume 23, issue 12

https://doi.org/10.5194/acp-23-7033-2023

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

https://doi.org/10.5194/acp-23-7033-2023

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

Articles | Volume 23, issue 12

Research article

|

26 Jun 2023

Research article |

| 26 Jun 2023

Large-eddy simulation of a two-layer boundary-layer cloud system from the Arctic Ocean 2018 expedition

Ines Bulatovic, Julien Savre, Michael Tjernström, Caroline Leck, and Annica M. L. Ekman

Data sets

Data from a modelling study of a two-layer boundary-layer cloud system from the Arctic Ocean 2018 expedition I. Bulatovic, J. Savre, C. Leck, M. Tjernström, and A. M. L. Ekman https://doi.org/10.17043/bulatovic-2022-cloud-structure-1

Aerosol particle number size distribution data collected during the Arctic Ocean 2018 expedition L. Karlsson and P. Zieger https://doi.org/10.17043/oden-ao-2018-aerosol-dmps-1

Weather data from MISU weather station during the Arctic Ocean 2018 expedition J. Prytherch https://doi.org/10.17043/oden-ao-2018-misu-weather-3

Ceilometer backscatter, cloud base height and cloud fraction data from the Arctic Ocean 2018 expedition J. Prytherch and M. Tjernström https://doi.org/10.17043/oden-ao-2018-ceilometer-2

Present weather sensor visibility and precipitation data from the Arctic Ocean 2018 expedition J. Prytherch https://doi.org/10.17043/oden-ao-2018-present-weather-1

Radiosonde data from the Arctic Ocean 2018 expedition J. Prytherch, M. Tjernström, J. Vüllers, P. Achtert, I. Brooks, G. Porter, and M. Adams https://doi.org/10.17043/oden-ao-2018-radiosonde-2

Cloudnet remote sensing retrievals of cloud properties during the Arctic Ocean 2018 expedition J. Vüllers, P. Achtert, I. Brooks, R. Neely III, and B. Brooks https://doi.org/10.17043/oden-ao-2018-cloudnet-4

Short summary

We use numerical modeling with detailed cloud microphysics to investigate a low-altitude cloud system consisting of two cloud layers – a type of cloud situation which was commonly observed during the summer of 2018 in the central Arctic (north of 80° N). The model generally reproduces the observed cloud layers and the thermodynamic structure of the lower atmosphere well. The cloud system is maintained unless there are low aerosol number concentrations or high large-scale wind speeds.