I'd like to thank the authors for their thorough consideration of the reviewers' comments, their responses and revised manuscript. Prior to final acceptance, I'd like to invite the authors to respond to the last remaining point of referee #1:
"Presumably it is the curve fitting routine, applied with Eqn 6 from the Supplement, which produces the new alphas, I wonder though if the same fit routine, applied without wall-loss, would reproduce the same alpha's as the original Tsimpidi? Assuming that this is the case, then I would just ask the authors to add some words on these large changes, and implications for simulations of regional scale OA concentrations".
This is potentially important and worth commenting on. I am happy to consider this as a minor revision without sending for re-review.
I congratulate the authors on a thorough and well-considered manuscript, and an enjoyable read.
Cheers
Gordon

I am happy that the minor revision addresses the final outstanding comment of the reviewer and congratulate the authors on their valuable manuscript. Good work.