The author collected the weather diaries of the Gottfried Kirch family, photographed them all, digitized the data since 1720, briefly processed and analyzed the barometric data, and made a case for the extreme cold winter of 1739-1740. The work is of great significance to historical climatology research in Germany.

I believe that the authors likely have valuable high-resolution (daily-scale) weather observations data that are worthy of a publication. After reading the manuscript, I found that the author's description was relatively simple and there were many ambiguities. Therefore, I suggest that a major revision is needed before the official publication.

• In the Chapter 2 & 3, the authors describe in detail the life of the family members, as well as the time periods they each recorded and the tools they used. But unfortunately, I did not get more information about the content of the observations: for example, what were the conditions of the observations, what was the routine of the observations, how many times a day were the observations made, and were they timed? How to ensure the consistency of observation data after the shift of observation position. In-depth descriptions of these elements can increase the scientific validity of the data and allow later users to use the record more confidently.
• In the method section of Chapter 4, the authors' description is rather brief, could they add a more detail description about the process of digitizing the data. How exactly was it extracted and what information was extracted? How does data quality control work: were there any outliers or missing measurements or ambiguous values recorded, and how were they handled if there were? In addition, I suggest that the authors give an example of the digitized results, such as a tabular presentation, which would provide more insight into what the authors did with the data.
• For the results section in Chapter 5, I suggest that the authors have a more detailed description of the data, such as adding a simple statistical description of the observed data (mean, maximum, etc.) in Chapter 5.1; the temporal variation characteristics of the reconstructed series can be analyzed, etc. In addition, the authors can perform some analysis of the trend of temperature and pressure changes within that century based on the available data, etc. In-depth description and use of the data allows the reader to have a more direct feeling of the data and to better promote the dataset.
• At the end of the manuscript, I hope the author can add some discussion to further analyze the value of this data set and look at other possible use of this data set in the future.

I hope our comments will help the authors, whose work I believe to be of great scholarly value, and look forward to seeing a new manuscript from the authors.

The weather diaries during historical times are important to reconstruct the climate parameters when the instrumental measurement was not started. The paper introduced the history of the weather diaries of the Kirch family and addressed the detailed recording process, unquestionably, this kind of diaries are valuable. If the temperature scale can be converted and keep the homogeneous of the series, that would be great. I just have several minor comments:

• In section 2: Is it possible to plot a simple family tree, with year of measurement, and the readers could easily to get the information the year, and who measured? I think it is clearer than reading several paragraphs.
• In Fig.1 What did the circles mean? if they indicate the area, please mark with unit.
• P9-10, the number of figures could be wrong in the text.