Authors,

Thank you for taking the time to put detailed work into the responses to the referees' comments. You saw the last round of comments by the final two referees. Based on their input, I'm happy for the manuscript to proceed to publication after a few minor additional edits.

Referee #2 brought up a good point about the correlation of precipitation to AA data, given the coarse nature of the sampling (~24-hr intervals). Given this, I think it would be useful to edit the wording in places to refer to days or samples and not precipitation "events," which are much shorter in nature. I suggest adding the following minor edits (line numbers refer to tracked version):

- Line 543: Define "higher precipitation" here (From Table S4 - looks 1 mm or more per day?)
- Line 40: This is an example of where I suggest changing from "events" to ~"days on which precipitation fell."
- Line 41: Given the sampling frequency, this is statement is a bit guess-work. I would change to "likely release" instead of "mainly released"
- Please also look through section 3.6 and change mentions of precipitation "events" to similar wording above about 'days on which precipitation fell', etc.

Thank you again for your submission to ACP and for your patience through this slower than normal process. The COVID situation has delayed my response time, for which I apologize.

Congratulations and best regards,

Alex Huffman