gmd-2018-16
Evaluating Simplified Chemical Mechanisms within CESM CAM-chem: MOZART-4 vs. Reduced
Hydrocarbon vs. Super-Fast Chemistry
Benjamin Brown-Steiner, Noelle E. Selin, Ronald Prinn, Simone Tilmes, Louisa Emmons,
Jean-François Lamarque, and Philip Cameron-Smith

Dear Benjamin and co-authors,

Thank you for your responses to the reviewers' comments and for uploading a revised
manuscript.

Reviewer 1 was very positive about your manuscript, with only minor comments and queries
which have been fully addressed in the revised manuscript. Reviewer 2 was also
positive about the work presented in the manuscript. However, they were also
very clear that additional simulations were required before they could recommend that
the manuscript be accepted for publication. In particular, they asked that the
sensitivity of the different chemical schemes to typical emission changes over the
historical period be compared. Although you've made efforts to ensure that the mechanisms
can be accessible, your response and the revised manuscript fall short of doing and
analysing the extra simulations requested.

On this basis, I ask you to go back and re-consider including these extra simulations in
your manuscript - only then will I feel that it is appropriate to publish your manuscript
in GMD.

I'm sorry that this isn't the positive response you may have wanted but the suggestion is
a very good one and including the additional simulations will add significantly to the
scientific interest of the manuscript and of the reduced mechanisms.

Regards,
Fiona O'Connor

Dear Benjamin,

I sent your revised manuscript back to Reviewer #1, in particular to check whether there was really a need for additional simulations following your recent changes. As you will see, they recommend that your paper be accepted and published in Geoscientific Model Development although they had a number of minor comments that they would like you to address first (See report by reviewer).

Once these are done, your paper will be accepted for publication.

Regards,
Fiona O'Connor