Dear authors,

I consider that the revision has addressed the issues raised by the reviewers.
Both of them agree on publication indicating minor changes.
I would require that Authors address them in the final version of the manuscript. In particular, it would be important to add guidance to the reader on the general applicability of the results related to multiple processes affecting BC distribution, focusing on wet deposition / precipitation effects.

- Add a sentence on BC precipitation scavenging while discussing hygroscopic growth as outlined by rev. 1

- Statement in the paper recommending to take into account all aspects of BC transport to the Tibetan plateau (including the distribution of wet depositions) when expanding the future analysis from a case-study basis to a climatological basis as suggested by rev. 2

Finally, include the suggestion of rev. 2 on sec. 3.3 wording.

Kind regards,

Federico Fierli





Rev 1: The authors have satisfactorily addressed my comments on their paper and have included needed changes to the manuscript and supplement.

While it is not necessary to include for this paper, a possible source of in situ ozone data:
Bian et al. (2012) http://onlinelibrary.wiley.com/doi/10.1029/2012GL052996/full

In regards to black carbon (BC) scavenging by precipitation, this process is not very well understood because there are not many good measurements quantifying BC scavenging. While I agree that BC hygroscopicity is important for scavenging, BC will also be subject to impaction scavenging by precipitation. Thus, when discussing BC precipitation scavenging, several processes, cloud drop activation, ice nucleation, and impaction of aerosols by precipitation, should be considered.




Rev 2: The manuscript has been greatly improved since the first submission. The new Fig S6 reporting the WRF-estimated precipitation fields supports the Author's hypothesis about BC being advected to the Tibet during cut-off low events without significant depositions on the southern Himalayan side. However, the analysis is based on a case study, and the removal of aerosols during the uplift may occur to a different extent during other events. I would like to read an Author's statement in the paper recommending to take into account all aspects of BC transport to the Tibetan plateau (including the distribution of wet depositions) when expanding the future analysis from a case-study basis to a climatological basis.

Technical correction on the new text in Sect. 3.3: "To examine the sensitivity of trans-Himalaya transport to the distribution of emission sources, we redistribute INTEX-B the total aromatics emissions over China and other South Asia countries on the basis of the MIX BC emission distributions." There is something wrong in the syntax of this phrase ("we redistribute INTEX-B the...").