Dear authors,

Thank you for the revised manuscript. The reviewers and I had another look at your revisions and a few minor issues need to be resolved before final acceptance.

Reviewer #1 raised the question on why the contribution of submicron particles to CCN is ignored (see comments online). I agree that this aspects should more discussed in the final manuscript. Just for clarification: I assume these numbers and calculations are explained in more detail in Gong et al? If so, add in line 604 the appropriate reference(s).

In addition, I have a few more detailed comments (line number refer to version with track-changes):

Line 182 (first paragraph on page 22): Please explain and give, if available, appropriate references for the “MARSU” project. This is not necessarily known to all readers. I would also suggest to explain the acronym “MarParCloud” once more before stating the research questions. Although stated in the abstract, it might be helpful to state the campaign period here.

Line 296: To be consistent with the other instruments, I would suggest to use CCNC as an instrumental acronym.

Line 301: Doesn’t the APS measure up to 20 micron?

Line 334: Maybe useful for the reader/data user the PVM also delivers surface area/effective radius of the cloud droplets.

Line 424: “section” should be abbreviated as “Sect.” (see https://www.atmospheric-chemistry-and-physics.net/for_authors/manuscript_preparation.html).

Line 1265: “High sunlight” -> “High amounts of sunlight”

Table 1: In the column “Dust Conc.”, please harmonize and use dots (and not commas) for the decimal separator.

Figure 10: Units are missing in panel b.

Figure 13, 14 and 15: Exponents should be in superscript.

Figure 13: There is parenthesis missing in the figure caption. I also wonder if the linear fit (with 7 data points!) is really reliable. What kind of R2 is shown?

Last important comment concerning all figures: Please add the appropriate reference to the figure caption if the figure from another peer-reviewed publications. If the publication has not been accepted yet, please add “in review” to it.

Thanks and kind regards

Paul Zieger.

Dear authors,

Thanks for the last changes. Your manuscript is now ready to be published in ACP.

Kind regards

Paul.