Fig. 1: The link between biogenic aerosol, CCN, and cloud droplet concentration over the Southern Ocean.
From: Biological enhancement of cloud droplet concentrations observed off East Antarctica
a Daily location of the RV Investigator in January and February 2018 during CAPRICORN-2. b Cloud droplet number concentrations (Nd) of low-level non-precipitating clouds from MODIS overpasses as a function of daily averaged surface CCN concentrations at 0.45% supersaturation. A linear model was fitted separately for Oceanic and Antarctic air masses, with shaded areas representing the 95% confidence interval. Error bars represent the standard deviation of CCN and Nd retrievals across each day. In both panels, points are coloured by air mass origin and sized by PM1 Biogenic (MSA + sulphate) aerosol concentrations.
