I received comments from two reviewers, both suggested "major revision". Although both reviewers thought the manuscript was good, and its contribution is significant, but the manuscript needs some major revision before it could be accepted. They also provided specific comments on the revision of the manuscript.

After receiving the comments, I carefully read the manuscript again and concur with the two reviewers. I think the authors have reasonably replied the comments. Please revise the manuscript according to to the comments. After the revision, I will ask the two reviewers to review the manuscript again.

I received comments from two reviewers, reviewer 1 suggested "accept as it is", reviewer 2 suggested " major revision". Both reviewers think the manuscript has some novelty and will be interesting to HESS, but reviewer 2 pointed out some important issues needed to be addressed. I read authors' replies to the comments and their revisions to the manuscript, and think their replies are reasonable. I suggest the authors provided their replies to comments in detail and revise their manuscript accordingly. I will ask the reviewers to review the manuscript again.

I received comments from two reviewers, both suggested " accept as it is". I concur with them. The manuscript should be published in its current version.