Thank you very much for the careful and significant revision of your manuscript, which has improved its readability and clarity. However, there are a few addition corrections to be made as follows.

Consider revising the title of the manuscript as suggested by the reviewer and also perform the following corrections:

According to figure’s 6 caption, figure 6d, shows the ratio of Figure 6c/Fig6a. I wonder why values are provided at areas (for instance over the oceans) where Fig 6a shows ASOA equal to zero (white color).

Line 654: I will not say that the ‘new predictions of ASOA are accurate’. I would just say they are ‘more accurate than earlier’. Please correct accordingly.

Line 198-202: Replace: ‘included ASOA realistically’ by ‘ treated explicitly ASOA’

Line 200: replace ‘These models’ by ‘Most models’

Line 202: replace ‘over-redicting POA’ by ‘over-predicting POA’

Supplement, lines 47 to 49. This is very confusing. Please explain better how the calculations are done and where the fractions or concentrations come from. What is divided by the amount of total PM measured in the respective size bin ? and also divided by the OA mass in the bin ?

Thank you very much for these last changes. The paper can be now published in ACP.
with kind regards, the editor