Thank you for submitting your revised manuscript - it is acceptable for publication in ACP.

One important detail that could be better clarified in the text is the justification behind your choice of a collection efficiency (CE) for the AMS of 0.25, in Section 2.1. I worry this low CE value will lead to confusion otherwise. Usually the CE refers to the fraction of particles that are vaporized when they reach the AMS's heater, but here CE seems to also incorporate sampling collection efficiencies as only the AMS's small flow of 0.1 lpm was used to sample the aerosol through a 3 m long sampling line. You could incorporate some of your explanation to Referee #1 here - that your CE value was assigned based on the DMPS size distribution measurements, and is small likely because of sampling line losses.

Ryan Sullivan