Dear authors.
I am pleased about the reviewer's reports received for your revised ms.

Pls go through their comments and address the main points of reviewer 1 as well as the comments of reviewer 2 to produce a revised ms as part of a minor revision.

I look forward to receive your revised version in the near future.
Best wishes, Petra

Dear Authors,

We would like to accept this paper for publication subject to some additional technical corrections.

This paper has a lot of acronyms. I think it should have a List of Acronyms or Glossary somewhere
to help the reader. I note that see "GR" is never defined.

Data is provided as Float32 but is only values -2, -1, and 0-100. I assume integer precision is good enough. Therefore, if it were Integer data it would be 1/4th the size. I suggest re-uploading compressed GeoTIFFs of 8-bit signed integer values.

31: Correct "The PM SIC is the most vital data" to "The PM SIC is the most vital dataset".
42: Change "are in planning stage." to "are in planning or concept stage (esastar, accessed 2023-06-10)."
46ff: Shorten to "SSMIS data have been used to bridge the 2011 to 2012 data gap between Advanced Microwave Scanning Radiometer-EOS (AMSR-E) and AMSR2, to generate a continuou time series (Meier and Ivanoff, 2017)."
48ff: Remove "An updated SIC product from the MWRI sensors after systematic assessment may be used to verify the SIC products derived from the next generations of PM sensor."
55ff: Change "in the melting seasons than in the freezing seasons." to "during sea-ice melt rather than during freezing conditions."
79: Correct "were used" to "are used".
88: Correct "More details" to "Further details" and "were given" to "are given".
86: Correct "in conically scanning mode" to "in conical scanning mode".
90: Remove "still".
90: Change "were re-calibrated" to "are re-calibrated".
91: Change "focused" to "focus".
93: Change "This study used" to "This study uses".
93: Remove "which are" to shorten.
94: Change "better performance" to "improved performance".
95: Change "than others" to "compared to its predecessors".
105: Remove "km" from "12.5-km".
106: Change "The time coverage" to "The temporal coverage".
114: Remove "sensors" from "series sensors".
115: Remove "sensors" from "series sensors".
116ff: Remove "produced by the Institute of Environmental Physics (IUP) of the University of Bremen".
121: Change "used" to "use".
123: Correct "This data is" to "These data are".
132: Change "observation ability" to "performance".
134: Change "were compared." to "are compared."
134: Change "resampled" to "resample".
135: Change "during the entire overlap periods," to "for the entire instrument overlap".
144/145: Change "SIC product developed by the Ocean and Sea Ice Satellite Application Facility Norwegian Meteorological Institute (version 2, OSI-SAF) (Lavergne et al., 2020)." to "SIC product described in Lavergne et al. (2020)."
146: Change "were quantified" to "are quantified".
146: Change "their entire overlap periods"their to "their entire overlap periods".
147: Change "were compared" to "are compared".
153: Change "In the previous study" to "In a previous study".
156: Change "weather filters" to "weather filters [GR(x/y)]".
157: Change "More details" to "Details".
157: Change "were given in" to "are given in".
164/caption Tab.2: Change "Differences in the parameters" to "Parameters".
166: Change "would cause" to "gives rise".
171: Change "referential SIC" to "reference SIC".
171/172: Change "Then, the linear regression was conducted between" to "The next step involves the linear regression between".
172/173: Change "As initial tie points we selected the pair satisfying requirements with the slope closer to 1" to "As initial tie point the pair satisfying requirements with the slope closer to 1 was selected".
179: Change "Antarctic tie points were generated by the following procedures." to "process for Antarctic tie points is outlined next."
179: Shorten "The conditions of sea ice tie-point samples in Antarctic are defined as follows:" to "Antarctic sea ice tie points are derived as".
180/181: Shorten "The conditions of open water tie-point samples in Antarctic are defined as follows:" to "Antarctic open water tie points are derived as".
182/183: Change "The Section S1.4 of the supplement file illustrates detailed procedures of generating the dynamic tie points." to "Details on generating the dynamic tie points are given in Section S1.4".
184: Change "were determined" to "are determined".
186: Remove "can".
188: Replace "against to" with "over".
196/197: Would be good to list the specific databases by DOI from IceWatch and Pangaea.
213/Caption Fig.1: Correct "statistical significant" to "statistical significance".
216: Correct "Comparisons" to "Comparison".
298: Correct "Comparisons" to "Comparison".
304: Replace "decreasing trend" with "reduction".
305: Replace "decreasing trends" with "reductions".
341/Caption Tab.4: Add "The statistically significant at 95% and 99% confidence levels are marked by * and **, respectively."
348: Correct "Comparisons to the" to "Comparison with".
356/357: Shorten "This implies that the MWRI-ASI SIC has a better accuracy in winter than in summer, which is due" to "Higher accuracy of the MWRI-ASI SIC during winter compared to during summer is due".
379/Caption Tab.5: Add "The statistically significant at 95% and 99% confidence levels are marked by * and **, respectively."
390: Replace "more intense." with "stronger".
426: Correct "138° E" to "138°".
455: Correct "two grids" to "two grid cells".
474: Correct "temporary data gaps" to "temporal data gaps".
477/478: Change "‘NoData’ is the missing data." to "‘NoData’ for missing data."
485: Replace "ability" with "skill".
500: Change "Following this study, we will attempt" to "Future improvements are aimed".
522: Suggest to acknowledge the input of the reviewers, pls.

References:
Add new refence:
"esastar, https://esastar-publication-ext.sso.esa.int/ESATenderActions/details/55123, accessed 2023-0610."
(Info accessed -- not to be included in your manuscript:
"The Copernicus Imaging Microwave Radiometer (CIMR) mission is an Expansion mission of the European Commission to enlarge the Copernicus Space Component. The aim of CIMR is to provide high-spatial resolution microwave imaging radiometry measurements and derived products with global coverage and sub-daily revisit in the polar regions and adjacent seas to address Copernicus user needs.The aim of this activity is to prepare an airborne capability that is required for CIMR calibration and validation activities both prior and post CIMR-A launch expected in 2028/29.")