Diurnal Temperature Range and Its Response to Heat Waves in 16 European Cities—Current and Future Trends

Round 1

Reviewer 1 Report

In summary, this is a detailed manuscript. The study investigates the DTR distribution in European cities of different background climate in relation to the season of the year, climate class and latitude, as well as its response to exceptionally hot weather. However, there are still some problems need to be improved.

1.      There are nine keywords that should be streamlined, and it is suggested that observations, latitude, climate type be deleted.

2.      Sixteen cities have been selected as the study area and their latitude and longitude are given in the table 1, but it would be better to show them on a map in order to visualize their distribution more clearly.

3.      In the Materials and Methods section, there is less description of methods and it is suggested that more content be added on RCM and EQM techniques. Moreover, why choosed 1971-2000 serving as the reference period?

4.      In figure 4, 6 and 7, 16 box plots are included to show the distribution of DRT in different cities at different time periods, this kind of display can be very intuitive to see the distribution of DRT in a single city but it is difficult to see the connection and difference between cities, it is better to add line graphs of representative regions or organize graphs of the same category of regions together.

No recommendation.

Author Response

Please see the attachment.

Author Response File: Author Response.pdf

Reviewer 2 Report

Diurnal temperature range and its response to heat waves in 16 European cities ─ current and future trends

 

Comments. Overall the manuscript has well organized with 7 Figure and 2 Tables. This manuscript has well written.  Minor revision

Because of the climate data records provide evidence of climate change key indicators, such as global land and ocean temperature increases; rising sea levels; ice loss at Earth’s poles and in mountain glaciers; frequency and severity changes in extreme weather. Please discuss them in the manuscript.  

The data source of the observation is used in the study is not properly discussed. Thus, modification is highly appreciated. In manuscript authors used years 1971−2000 reference period and projected 1971−2100 period. However, the projected period may considered for as 30 year interval as per the climatology considered in the relevant papers (2000-2050, 2050-2100).

Replace figure as Figure and keep uniform through the manuscript. Use recent papers and cited them to improve the manuscripts.

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Author Response

Please see the attachment.

Author Response File: Author Response.pdf

Reviewer 3 Report

I have carefully read the manuscript titled “

 Diurnal temperature range and its response to heat waves in 16 2 European cities ─ current and future trends”. The first apparent thing in the manuscript provides the sheer amount of work that went into doing data records and analyses for an important trend of the diurnal temperature range (DTR), and on this count alone, it deserves publication. This ms represents a comprehensive survey of data, and analysis and has effectively addressed important gaps in our current state of knowledge. That being said, I do have some concerns that need to be raised, the presentations of figures and discussions need more details and connections.

 

In particular, most of the figure legends were oversimplified. The authors have had to focus on certain aspects of the analysis goal and several climate factors they are discussing, and they omit a range of ecological processes (such as nighttime temperature rise) that are critical in the current discussion and debates. I think they need to really lay out the limitations of their study here or include the prospects more precisely in the discussion and conclusion paragraphs. On the other hand, in the discussion section, distributional data and maps could be brought in to strengthen the geographical view of the current study. I would recommend that these be incorporated into the ms before it is accepted by the Journal.

Please see attached comments for specifics.

Specific suggestions:

 

The definition of the Köppen-Geiger Climate Classification should be clarified and indicated.

 Fig. 3. Figure legend could be modified to describe the three sample sites and the micro-climate. And statistics could be included as well.

Fig. 4: To attach a European map that would help the connections.

I hope these comments are useful.

I have carefully read the manuscript titled “

 Diurnal temperature range and its response to heat waves in 16 2 European cities ─ current and future trends”. The first apparent thing in the manuscript provides the sheer amount of work that went into doing data records and analyses for an important trend of the diurnal temperature range (DTR), and on this count alone, it deserves publication. This ms represents a comprehensive survey of data, and analysis and has effectively addressed important gaps in our current state of knowledge. That being said, I do have some concerns that need to be raised, the presentations of figures and discussions need more details and connections.

 

In particular, most of the figure legends were oversimplified. The authors have had to focus on certain aspects of the analysis goal and several climate factors they are discussing, and they omit a range of ecological processes (such as nighttime temperature rise) that are critical in the current discussion and debates. I think they need to really lay out the limitations of their study here or include the prospects more precisely in the discussion and conclusion paragraphs. On the other hand, in the discussion section, distributional data and maps could be brought in to strengthen the geographical view of the current study. I would recommend that these be incorporated into the ms before it is accepted by the Journal.

Please see attached comments for specifics.

Specific suggestions:

 

The definition of the Köppen-Geiger Climate Classification should be clarified and indicated.

 

Fig. 3. Figure legend could be modified, to describe the three sample sites and the micro-climate. And statistics could be included as well.

Fig. 4: To attach a European map that would help the connections.

I hope these comments are useful.

Author Response

Please see the attachment.

Author Response File: Author Response.pdf