Precipitable Water Vapor Retrieval Based on DPC Onboard GaoFen-5 (02) Satellite
, Donggen Luo 5, Zhengqiang Li 2,3, Decheng Wang 1 and Xiangning Chen 1Round 1
Reviewer 1 Report
The manuscript by Wang et al., presents precipitable water vapor retrievals from GF-5(02) DPC. The employed algorithm is based on physical-based retrieval framework and the results seem valid with a validation with MODIS and AERONET. The paper is overall well-written and only a few issues should be addressed in the revised manuscript:
1) Please describe and address the main improvements of your algorithm compared to other existing algorithms.
2) The English language needs an improvement, a number of grammatical errors were found, like Line 27 "has high accuracy".
3) Subsections for Section 2.2 should be organized in a better way, Sect. 2.2.4 should be included in Sect. 2.2.1. as both subsections describe the retrieval procedure.
4) Figure 3: The title of Figure 3 indicates the ending date different from that in the text, please clarify it. What about blank areas in Fig. 3? No data? Please explain it in the text.
5) Line 282-284: Please provide an evidence (any reference) for your statement that MODIS has a high precision.
6) Figure 6: Please indicate the corresponding R2 value. What does the color bar represent?
Author Response
Dear Reviewer,
We sincerely thank you for the valuable feedback that we have used to improve the quality of our manuscript “remotesensing-2093604”. The suggestions are quite helpful, and we have incorporated them in the revised version of the manuscript. We hope that you will be satisfied with our responses to the ‘comments’ and the revisions for the original manuscript.
Please see the attachment
Thanks so much!
Chao Wang
Author Response File: 
Author Response.docx
Reviewer 2 Report
line 54 … DPC to retrieve aerosols …
line 65 why plural (bands)? I thought you only use the 910 nm band for PWV retrieval . Please clarify.
line 74 … which retrieves water vapor according to ….
line 99 do you mean 865 nm?
line 112 … spectral channels with a spectral range from visible to …
line 118 … to retrieve water vapor …
Figure 1 : please provide more informations: what is SRF/TTA ?
what does the T in WVAT mean?
line 133 : please explain why you introduce MODIS PWV. Do you need these data for intercomparison with DPC PWV? Maybe it is good to provide at the end of the introduction an overview about the strategy of your article.
line 162 … PWV has an uncertainty of about 10% …
line 183 remove one time „ to calculate the“ since it is doubled
Figure 3 line 233, … for January 20, 2022 to January 29, 2022.
line 235 most regions are dry …
line 240 … the PWV values are high.
line 245 The 10 days zonally averaged PWV values observed by DPC
line 248 … of the southern summer hemisphere
Figure 5 please add the y-label including unit
line 283 does it mean that Aeronet is underestimating high PWV values in Figure 5 ?
Figure 6 what is the label of the color table?
4. Discussion line 291 According to figure 6 , MODIS PWV is also overestimated at high values.
On the other hand you told that MODIS is accurate. Please clarify.
Author Response
Dear Reviewer,
We sincerely thank you for the valuable feedback that we have used to improve the quality of our manuscript “remotesensing-2093604”. The suggestions are quite helpful, and we have incorporated them in the revised version of the manuscript. We hope that you will be satisfied with our responses to the ‘comments’ and the revisions for the original manuscript.
Please see the attachment
Thanks so much!
Chao Wang
Author Response File: Author Response.docx
