The tethered balloon system BELUGA (Balloon-bornE moduLar Utility for profilinG the lower Atmosphere) was operated during leg 4 of the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC). The balloon was operated from the Balloon Town site in the central observatory, close to RV Polarstern (Shupe et al., 2022, Elementa). Balloon payload included an extended meteorological package, an ultrasonic anemometer package, a broadband radiation package, the video ice particle sampler, and the cubic aerosol measurement platform. An overview showing the value of the combined observation is displayed by Lonardi et al. (in review). The data processing is described in Pilz et al. (in preparation). The present dataset covers the presence of cloud microphysical particles measured by the video ice particle sampler on 5 flights between 29 June and 27 July 2020. Since no cloud ice crystal was identified during the flights, the retrievals of the instrument were used to flag the presence of liquid cloud water.

Profiles of liquid cloud water (flag) as an indicator for clouds.