The ice nucleating ability of soot aerosol particles

We investigated the ice nucleating efficiency of two soots, as proxies for hydrocarbon fuels and biomass sources. In both cases, the soots did not nucleate ice within the detection limit of our equipment. We calculated an upper limit parameterisation for soot ice nucleation activity, and used this to estimate the potential contribution of soot to the atmospheric distribution of ice nucleating particles (INP) using GLOMAP (a global aerosol model). When comparing to feldspar INP distributions, we find that soot does not play a significant role as an atmospheric ice nucleating particle.

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