The Multidisciplinary Drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition featured the first data capturing the annual cycle of ice-nucleating particles in the central Arctic. In the Atmospheric Radiation Measurement (ARM) Data Center, two principal investigator data sets on ice-nucleating particles (INPs) are now available from the 2019–2020 Multidisciplinary Drifting Observatory for the…