Dear authors,

You addressed all the concerns of the reviewers and I think the manuscript is improved and ready to be published in ACP. However, like one of the reviewer, I think you should highlight more the novelty and the importance of your study in the manuscript. As suggested by one reviewer, I recommend to do something very simple such as adding one paragraph to introduce the focus on western Mediterranean, the use of the Orographic Representativeness Error and the consideration of factors other than OA for model evaluation. This paragraph could be added into the introduction. For example, you could be helped by your abstract without giving results.
In addition, please correct these typos
p3 , line 38 at at
p5, line 16 don't -> do not
Please avoid acronyms inside figure captions, give the definition. The caption should be understandable alone. For exemple, in Fig. 12 organic aerosol is used and also OA. Please write: Average organic aerosol (OA) ... and Please go through all the captions and correct this.