Dear authors,
I invited the two former referees to review your revised manuscript. Unfortunately, one referee declined my invitation, and another referee did not give a response until now, although both of them had expressed a willing to further review a revised manuscript before. After reading the referees’ comments, authors’ responses, and revised manuscript, I think the issues raised by the referees have been addressed. Especially, I agree in that the type of your manuscript should be changed to Technical Note. I am pleased to say that your manuscript is acceptable for publication in ACP subject some technical corrections.

Line 2 (first sentence in the Abstract): change “H2O” to “water vapor (H2O)”;
Line 91 (subtitle for 2.2.1): change “H2O” to “H2O dataset“ or remove “H2O from”;
Line 103 (subtitle for 2.2.2): change “H2O” to “H2O dataset“ or remove “H2O from”;
Line 112 (subtitle for 2.2.3): change “H2O” to “H2O dataset“ or remove “H2O from”;
Line 457 (first sentence in Section 5): change “H2O” to “water vapor (H2O)”;
Add the Data availabilities, Author contributions, Acknowledgements, Competing interests, et c. as required by the journal.

Sincerely,
Jianzhong Ma