Sea2Cloud - Baring-Head - PSM - Level 2

This file contains the aerosol total concentrations measured by a Particle Size Magnifyier (PSM) at a 30 min resolution at the Baring Head station, local time. During 12.6.2020-17.9.2020 for two different lower size cut: 1nm and 3 nm. We used a model A09 with supersaturation fixed at 1 lpm (1 nm size cut). Then, during 17.9.2020–17.2.2021, we used an A11 PSM in stepping mode with saturation flow rate switching between 0.1 (3 nl size cut) and 1 lpm (1 nm size cut) every 60 s. The inlet to the PSM was a 122 cm long 1/4" stainless steel tube. The first 103 cm of this inlet was shared with the CPC to increase the flow rate through the inlet, because increasing the total flow rate from 2.5 to 3.5 lpm decreases the particle losses due to diffusion in an inlet with this diameter.