Dear Authors:

Thank you for providing your responses to the referee comments. Both referees evaluated that the manuscript has good to excellent quality and significance and so recommended acceptance after moderate revision. I studied all comments and found that your revision seems to be enough. I have a small concern about the last comment of the referee #1. Namely, the referee recommends using a coarser resolution (2.5 or 5 degree) for clarity, but you justified using 1 degree rather than 0.5 degree. I think there is some misunderstanding. Anyway, I am looking forward to receiving the revised manuscript, which both referees are willing to review.

Dear Authors:
Thank you for providing your response to referee comments and a draft of revised manuscript. I received no additional comment from the referees and others, allowing me to make a final decision. I studied your replies and found that the manuscript should be greatly improved: especially, separate section for discussion, additional supplementary figures (e.g., rooting depth), inclusion of new metrics. Therefore, I conclude that the manuscript is acceptable for publication.