Dear authors,
Thank you for providing a revised version of your manuscript draft. Given you addressed most of the concerns and comments raised by the reviewers in a satisfactory way, I would be happy to accept your manuscript for publication in GMD upon you address the minor revisions request raised during the second round of revision.
Thank you and best regards
Ludovic Räss

Dear authors,

thank you for addressing the remaining comments raised during the second round of revision. Before we can release the manuscript for publication, I would like to ask you to perform the following technical correction. Namely, it would be ideal if you could improve the rendering of the super/sub scripts in many of your variable, as they are now mostly all in italic. This is currently confusing, as it suggests that they are all variables which is actually not the case. E.g., in eq. (1), J_obs and J_reg do not refer to obs and reg being variables and should thus not be rendered in italic. Same logic applies to mdl and others. Also, you may want to rename sfc as it could be confusing now being s times f times c.

I would appreciate if you could take some time to revise this final technical aspects in order to have your manuscript finalised for publication.

Best regards,
Ludovic Räss