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. 2022 Jun 20;13:3537. doi: 10.1038/s41467-022-31182-x

Fig. 5. Seasonal cycle of size-resolved total aerosol and ice nucleating particles (INPs) active at −20 °C.

Fig. 5

a Average cumulative INP concentration per month for particles in the size ranges of 3.0–12 µm, 1.2–3.0 µm, 340 nm–1.2 µm, and 150–340 nm. Monthly averaged total aerosol number concentrations (CN) for b coarse aerosols (3.0–12 µm and 1.2–3.0 µm) and c smaller fractions (340 nm–1.2 µm and 150–340 nm). Also shown in c is the total aerosol number concentration from 10 nm to 10 µm averaged per month. INPs are shown at –20 °C as opposed to warmer temperatures since INPs were active starting at this freezing temperature for most of the year thus to enable an intra-monthly comparison possible (see Fig. 4). Error bars represent standard deviation.