Dear authors,

I am ready to accept your manuscript subject to one very minor modification. On page 2, lines 23-27 of the revised manuscript, you write “The occurrence of a large source of low volatility vapors (generally involving H2SO4) in the absence of coagulation with larger particles results in the constant formation of new particles in the atmosphere, because of the high level of production of condensable vapors and the relative lack of a condensation sink of pre-existing particles; these new particles subsequently grow into Aitken particles (> 50–100 nm in diameter), which probably influence cloud formation, and thereby radiation (Boy et al., 2005; Pierce et al., 2014; Leaitch et al., 2016).” I think that some aspects of the statement are exaggerated. I suggest it be revised to something like “The occurrence of a low volatility vapors (generally involving H2SO4) combined with the relative lack of coagulation and condensation sinks of pre-existing particles may result in the formation of new particles in the atmosphere (e.g. Boy et al., 2005). If precursor vapors are sufficient, these particles may grow to sizes of 50 nm diameter or larger enabling then to influence cloud formation and thereby radiation (e.g. Pierce et al., 2014; Leaitch et al., 2016).”