Sorry to have been so long to reach a final decision.

The manuscript is much improved as you treated very well the suggestions of both reviewers.

I just want you to change 3 minor things:

the first sentence of the abstract so that it is grammatically correct:
change
'This study assess the chemical composition and global aerosol load of ...'
to
'This study assesses the chemical composition and global aerosol load of ...'

Figure 1: the symbols '2' for the Mojave Desert and '4' for Patagonia do not appear as there are placed over the ocean. Either change the color of these symbols or place them over land where they can be seen.

In subsection 3.3 of the corrected manuscript, please change:
'...underestimated by the model; however the model performance is better compared to other components (Table 2).'
to
'...underestimated by the model; however, the model comparison if substantially improved when looking at other components (Table 2). '

congratulations for this paper.

Yves Balkanski