EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Modelling marine organic aerosol and its impact on clouds in the Arctic 

Anisbel Leon, Bernd Heinold, and Manuela van Pinxteren
Anisbel Leon et al.
  • Leibniz Institute for Tropospheric Research, Modelling Department, Germany (

Marine organic aerosol is a major contributor to cloud condensation nuclei and ice nucleating particles over pristine open-ocean and coastal regions and thus has an important impact on radiation, precipitation, and atmospheric dynamics. In the Arctic, the summer-time loss of sea ice together with the rapid ice retreat are key factors for potentially increased marine aerosol emissions. In our planned studies with the aerosol-climate model ICON-HAM, we want to investigate the influence of primary marine organic aerosol on the Arctic climate and its rapid warming. Currently, the model development focuses on the implementation of a detailed, species-resolved ocean emission scheme. Here, we present the first results of an offline version following Burrows et al. (2014). The new emission scheme has been applied in ICON-HAM. This allows for including the marine organic aerosol’s life cycle and interactions with mixed–phase Arctic clouds, focusing on potential ice-active species.

How to cite: Leon, A., Heinold, B., and van Pinxteren, M.: Modelling marine organic aerosol and its impact on clouds in the Arctic , EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-8559,, 2022.