The manuscript entitled Black carbon in snow in the upper Himalayan Khumbu Valley, Nepal: observations and modeling of the impact on snow albedo, melting, and radiative forcing by Jacobi et al. received two reviews both which indicated some modifications were necessary before the manuscript would be acceptable for publication into the journal. While I agree with the author’s assessment that the 2nd anonymous review was vague to what changes were necessary, both reviewers suggest some additional work/comparisons in order to make the Crocus modeled snow albedos align my closely with the observed albedo (reviewer 2) or analysis of the melting period and discussion of the sensitivities of several properties (e.g., soil temperatures, and separation of precipitation into rain and snow). It appears that in their revisions, the authors sought to address the reviewer’s concerns primarily through modification of the existing text rather than undertaking more extensive model evaluation/comparisons.
While the modifications to the text do clarify a number of the reviewers points, particularly reviewer some moderate to majors revisions remain to better assess why the discrepancies between measured and modeled albedo exists. These discrepancies make it somewhat difficult to fully assess the role of black carbon – which is the focus of the manuscript.
As suggested by reviewer#1, and to some extent addressed in the authors, response, a fuller evaluation/discussion on the sensitivity of the model to such factors as air threshold (separating rain/snow) and other parameters which seem to be impacting snow height and snowpack duration is warranted as a better understanding and possibly a correction would help in understanding the BC plays in improving the model as the appear to have an impact on the results. Therefore the manuscript still requires major revisions before it is acceptable for publication in The Cryosphere.

The reviewer indicated that the revised manuscript is acceptable for publication. However, you should grammatically check your manuscript before final submission.