Dear Karoline,

I'm happy to accept your paper for publication in ACP. There is one last comment and numerous minor small technical corrections (below), you should consider prior to uploading the final files.

Best regards,
Barbara

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Comment:
p. 1, l. 19: cf Reviewer #3: The total water content also includes vapour. Make consistent to Eq. -19.

Corrections:
p. 1, l. 17: Is there a verb missing? …and the impact of ice nuclei concentrations and types on ice formation [was investigated?]

p. 1, l. 29: in the literature
p. 4, l. 23: ‘it is affected’ seems redundant
p. 4, l. 23, 24, 25: equal --> equally, different --> differently
p. 6, l. 22: include
p. 9, l. 13: actualized --> ‘used’ or ‘applied’
p. 10, l. 4: independent of
p. 10, l. 28: I don’t understand the following fragment ‘…that [at?] a median freezing temperature of -11.5 C dust (? – or ice concentrations?) could be affected by particles with sizes…’
p. 11, l. 15: Hoffmann and Kiselev (2014)
p. 11, l. 18: Levon and Yankofsky (year?)
p. 13, l. 10: ‘the’ redundant
p. 14, l. 6 and anywhere else: I accept that ‘personal communications’ should not be listed in the reference list; however, they should be marked as such.
p. 15, l. 2: ‘…higher activated fractions than the larger particles sizes’ or ‘…for the larger particle sizes’?
p. 25, l. 29; p. 27, l. 31: on the order…
p. 27, l. 24: was --> that (?)
p. 30, l. 2: moderately
Figure 9: None of the lines appears to be dotted.