EGU21-7749, updated on 08 Nov 2022
EGU General Assembly 2021
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Airborne in-situ observations of Arctic clouds in spring and summer above sea ice and the open ocean

Manuel Moser1,2, Christiane Voigt1,2, Valerian Hahn1,2, Olivier Jourdan3, Christophe Gourbeyre3, Regis Dupuy3, Guillaume Mioche3, Alfons Schwarzenboeck3, Johannes Lucke2, Tina Jurkat-Witschas2, Yvonne Boose2, Susanne Crewell4, Andreas Herber5, Christof Lüpkes5, and Manfred Wendisch6
Manuel Moser et al.
  • 1Institut für Physik der Atmosphäre, Johannes Gutenberg-Universität, Mainz, Germany
  • 2Institut für Physik der Atmosphäre, Deutsches Zentrum für Luft- und Raumfahrt, Wessling, Germany
  • 3Laboratoire de Météorologie Physique, Université Clermont Auvergne, Clermont-Ferrand, France
  • 4Institut für Geophysik und Meteorologie, Universität zu Köln, Cologne, Germany
  • 5Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany
  • 6Leipziger Institut für Meteorologie, Universität Leipzig, Leipzig, Germany

Two airborne campaigns (AFLUX and MOSAiC-ACA) were conducted in spring 2019 and late summer 2020 to investigate low- and midlevel clouds and related atmospheric parameters in the central Arctic. The measurements aim at better understanding the role of Arctic clouds and their interactions with the surface - open ocean or sea ice - in light of amplified climate change in the Arctic.
During the campaigns the Basler BT-67 research aircraft Polar 5 based in Svalbard (78.24 N, 15.49 E) equipped with a comprehensive in-situ cloud payload performed in total 24 flights over the Arctic ocean and in the Fram Strait. A combination of size spectrometers (CDP and CAS) and 2-dimensional imaging probes (CIP and PIP) covering the size range of Arctic cloud hydrometeors from 0.5µm to 6.2mm measured the total particle number concentration, the particle size distribution and the median volume diameter. Liquid water content and ice water content were measured with the Nevzorov bulk probe. The cloud water content (liquid and ice water content) from the Nevzorov probe is compared to the cloud water content derived from particle size measurements using consistent mass-dimension relationships.
Here we give an overview of the microphysical cloud properties measured in spring and late summer in high northern latitudes at altitudes up to 4 km. We derive the temperature and altitude dependence of liquid, mixed phase and ice cloud properties and investigate their seasonal variability. Differences in cloud properties above the sea ice and the open ocean are examined, supporting the hypothesis of an enhanced median volume diameter over open ocean compared to clouds formed over the sea ice. The comprehensive data set on microphysical cloud properties enhances our understanding of cloud formation and mixed phase cloud processes over the Arctic ocean, it can be used to validate remote sensing retrievals and models and helps to assess the role of clouds for stronger impact of climate change in the Arctic. 

How to cite: Moser, M., Voigt, C., Hahn, V., Jourdan, O., Gourbeyre, C., Dupuy, R., Mioche, G., Schwarzenboeck, A., Lucke, J., Jurkat-Witschas, T., Boose, Y., Crewell, S., Herber, A., Lüpkes, C., and Wendisch, M.: Airborne in-situ observations of Arctic clouds in spring and summer above sea ice and the open ocean, EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-7749,, 2021.