Dear authors:

Thank you for sending your replies to each referee comment.
The three referees evaluated that your study has excellent to good significance of science and recommended the manuscript for publication after appropriate revision. Your replies, as far as I studied, look reasonable, leading to greatly improved clarity, accuracy, and presentation of your manuscript. I am looking forward to receiving the revised manuscript.

Dear Authors:

Thank you for submitting your replies and the revised manuscript.
I studied them and found hat the manuscript was greatly improved especially in terms of clarity and discussion. Considering the positive recommendations of reviewers, I conclude that it would be acceptable for publication after several technical corrections.

Technical points
Figure 4: Do the lines and diamonds denote the same as Figure 1b? If so or if not so, please clarify in the caption.
Figure 7: replace “Hierarchical” by “hierarchical”.
Figure 7: replace “Parallel” by “parallel”.
Page 18 Line 31: For “CO2”, subscript “2” (throughout the manuscript)