| Summary: | The Multidisciplinary drifting Observatory for the Study of the Arctic Climate (MOSAiC, 2019/2020), a year-long drift with the Arctic sea ice, has provided the scientific community with an unprecedented, multidisciplinary dataset from the Eurasian Arctic Ocean, covering from high atmosphere to deep ocean across all seasons. However, the heterogeneity of data and the superposition of spatial and temporal variability intrinsic to a drift campaign complicate the interpretation of observations. Here, we compile a quality-controlled dataset with best coverage and derived parameters, and provide daily average values of: drift speed, friction velocity, ocean temperature and salinity (full profiles and surface), mixed layer depth, mixing layer depth, heat flux over the halocline and thermocline. The presented core parameters offer valuable context for interdisciplinary research, fostering an improved understanding of the complex, coupled Arctic System. Results based on this dataset are described in Schulz, Koenig, Muilwijk et al.: "The Eurasian Arctic Ocean along the MOSAiC drift (2019-2020): An interdisciplinary perspective on properties and processes" (Elementa: Science of the Anthropocene, tentatively submitted September 2023). When using the parameter in this data set, we strongly advise to also cite the respective original data sets, linked in the description of methods here.
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