SRP412847 PRJNA895866 PRJNA899537 16S and 18S rRNA amplicon data for the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) Raw sequence reads 16S and 18S rRNA amplicon data for seawater, sea ice, and experimental samples collected during the 2019-2020 MOSAiC expedition in the central Arctic Ocean 16S and 18S rRNA amplicon data for the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC)