Spatio-Temporal Evolution and Propagation of Meteoro-Hydrological Drought in Yalong River Basin
Round 1
Reviewer 1 Report
Hi dear authors
Explanations are mentioned in the text of the manuscript.
Best regards,
Comments for author File: 
Comments.pdf
Author Response
Thanks for your comments on our paper. We have revised our paper according to your comments.
Author Response File: 
Author Response.docx
Reviewer 2 Report
In this paper, based on the meteorological and hydrological data of Yalong River basin from 1960 to 2019, the meteorological and hydrological drought were analyzed using the standardized precipitation evapotranspiration index (SPEI) and standardized runoff index (SRI), and then spatio-temporal evolution and propagation characteristics of droughts were studied on multiple time scales. The research can fill some practical vacancies, which has practical significance and promotion value, and the research methods and results are reasonable. However, there are still some details of the article that need to be perfected. It is suggested to answer and revise the following questions:
1. In the introduction, it is suggested to add the latest research results related to the propagation of meteorological drought to hydrological drought. And further highlight the innovation of this paper.
2. The author has a vague definition of the concept of station and watershed, and does not clearly define the hydrological station corresponding to the upper, middle and lower reaches, nor explore the change laws of the upper, middle and lower reaches.
3. In Section 3.2, the description of the propagation time of meteorological- hydrological drought is not accurate. It is suggested to be more detailed and supplement the formula if necessary.
4. In Section 4.2, the author analyzes the characteristics of drought propagation on the 12-month scale in detail, but lacks the corresponding analysis on the short time scale (one month). The regularity on the short time scale are equally important.
5. The picture specification and font in the article are not consistent, so it is suggested to standardize the picture. At the same time, standardize the horizontal and vertical axis of the table and check whether it needs a bold font.
6. Line 62-63: “the basin is a sensitive area for global climate change due to the great difference in elevation and wide latitudinal span”. This explanation is not very scientific.
7. Line 73: It is suggested to change“Study Area and Data” to “Data and Methods”
8. Line 92-93: It is suggested to add runoff data source description.
9. Line 192-193: It is suggested to replace the “Drought index value “ with “SPEI” and “SRI” in Figure 2 .
10. Line 195: The data in Figure 3 are meteorological station data, which does not match the data scale in Figure 2 and Table2.
11. Line 181-182: “The drought occurred ...... for two consecutive years in 1976, 1984, 2007, and 2012, respectively”. What does this mean?
12. Line 162-163: ”moderate drought occurred for three consecutive years in 1972”. What does this mean?
13. In Figure 5, only the dry and wet changes of YJB are shown. Why? Moreover, the data scales in Figure 6 and Figure 5 do not match.
14. The contents discussed are relatively lacking, and it is suggested to add them appropriately.
Author Response
Thanks for your comments on our paper. We have revised our paper according to your comments.
Author Response File: Author Response.docx
Round 2
Reviewer 1 Report
Hi dear authors,
Supplementary explanations are mentioned in the text of the manuscript.
Comments for author File: Comments.pdf
Author Response
Dear Editor Zheng,
Thank you very much for your comments and suggestions on our paper water-2163476. These suggestions are valuable and will help us improve our paper. We carefully read these recommendations and revised our paper based on this. We sincerely hope that our modifications will meet your expectations.
Experts thought there were some normative problems with our paper, so we checked the relevant chapters and revised them as required. Thank you for your time.
Author Response File: Author Response.docx
