Dear Authors,

Thank you for your careful answers to the referees comments. There are a two small items left before publication.
2. Figure 6: there are two peaks around time 13.0 and 13.5 in both CO and BC. Those of BC are larger than the signal discussed in the paper (between times 12-13). These peaks are apparently completely unrelated to forest fires, because not minimally reproduced by FLEXPART. I suggest to add a note on these peaks in the text, perhaps leaving them for future study or suggesting some speculative hypothesis on their origin (anthropogenic?).

At which altitudes do peaks around time 13.0 and 13.5 appear? Which reasons lead to the attribution of these peaks to dust ? This does not explain the concomitant CO peaks.


Fig. 9. The color code is now big enough, however the legend below the color code is too small.

best regards,
Matthias Beekmann