Dear Lu and co-authors,

Thank you for addressing the reviewers' comments and for submitting a revised manuscript. The reviews were very positive and there is only one small issue (below) that I ask you to address.

Both reviewers asked about the coupling between the photolysis scheme and the clouds & aerosols in the model. Although you answered the question in relation to clouds, I felt that aerosols were not addressed. Can you clarify whether the photolysis scheme sees the aerosol loading from the aerosol scheme TOMAS or not and include this in your revised manuscript?

Also, although Reviewer #2 found the comparison of the high resolution model with observations to be disappointing, they also indicated that the manuscript is publishable as is. Therefore, I am not seeking any further comparisons to be carried out.

Finally, GMD have very recently started to request that author contributions be included in papers. Could I please ask you to add a section on the appropriate contributions. See https://www.geoscientific-model-development.net/for_authors/manuscript_preparation.html for further details.

I will then be happy to recommend that your manuscript be published in GMD.

Regards,
Fiona O'Connor