Fine particle concentration during the MR22-06C cruise of R/V Mirai

Fine aerosol particle number concentration data obtained from the R/V Mirai cruise in 2022 (MR22-06C), which were continuously measured using a scanning mobility particle sizer (SMPS; Nano scan SMPS3910, TSI Inc.) located in an experimental room on the flying bridge. Ambient air was drawn through ~3-m-long tube and then was dried by a Nafion-type aerosol dryer placed in front of SMPS to avoid the condensation of water inside the tubing and instrument and to sample "completely dried" particles.