Dear Dr. Nie,

Thank you for submitting your manuscript to the NHESS special issue “Advances in computational modelling of natural hazards and geohazards” and for addressing the reviewer comments. I have read the paper with great interest and have only grammar and English related comments (see comments included in the PDF). Unlike the reviewers indicated, English could significantly improve, and I have tried to do so but keep in mind that I’m not a native speaker. So the manuscript most likely would benefit if you consider approaching an English support service to work on it as well.
Furthermore, I noticed that the rain data provided in figure 5 is very similar to that provided in figure 7, only the time span might have changed. If so, please remove figure 5 and adjust the references to this figure in manuscript where needed.

Sincerely yours,
Albert.

Dear Dr. Nie,

Thank you for addressing the reviewers comments. I have read with great care your revised manuscript and only have minor suggestions, see below. Again, thank you for submitting your manuscript to this NHESS special issue.

Best regards,
Albert Kettner.


Throughout the document, make sure that the references are cited properly. For example, page 1, line 23, remove “M” and “D”, so the citation is: “Froude and Petley, 2018;”. More citations need to be corrected as such.
Page 1, line 13. Do the authors mean “Simultaneous state-parameter estimation” or as indicated in page 1, line “simultaneous states and parameters estimation”?
Page 5, line 9. “Combining the two ….. we can build the landslide …. and the model parameters.”
Page 6, line 11. Remove ‘is’: “…is can be …”
Page 6, line 21. ‘of the left bank slope…’. Rephrase this such that it reads ‘ of the northern bank slope…’.
Page 7, line 1. Rephrase so it reads “….can lead to the movement of about 85….”
Page 7, line 9. Rephrase so it reads: “Five continuous GPS observation stations have been set up for the Xishan Village landslide for obtaining any deformation observastions.”

Page 7, line 27. The monitoring GPS sequence contained significant noise or errors. In order to reduce the influence of this, the…
Page 7, line 27. Indicate how it was decided to take a 5day timestep. Why not 3 days or 7 days? What procedure was used to find the optimum of 5 days?
Page 8, line 9. Rephrase so it reads: “the period term of the two stations, both show relatively the same changing tendency, which…..”
Page 8, line 11. Change text such that “The GPS04 station belongs to partⅠ” reads “The GPS04 stations monitors the first part of the landslide”.
Page 8, line 12. There are a large number of people living there.
Page 8, line 13. Change text such that “The GPS03 station belongs to part Ⅲ.” Reads “Station GPS03 monitors part III, the upper part of the landslide (Fig. 3).”
Page 9, line 4. Add “a” so it reads “…. method offers a better forecast….”
Page 9, line 8. “execution time of the two methods….”
Page 9, line 24-25. The reference to google earth to figure 2 and rewrite to something like: “Map obtained from Google Earth”.
Page 21, table 3. Write out the abbreviations so the table can be understood without reading the paper. So: “Comparison of Mean Absolute Error (MAE), Mean Squared Error (MSE) and Root Mean Square Error (RMSE) performance….”

Dear Dr. Nie,
Thank you for submitting your revised manuscript. You have adequately incorporated all comments so I'm recommend the manuscript as 'Publish as is'.

Let me know if you have any questions.
Best regards,
Albert.